CN1065417A - Milling train, hot rolling system, milling method and rolling mill revamping method - Google Patents

Milling train, hot rolling system, milling method and rolling mill revamping method Download PDF

Info

Publication number
CN1065417A
CN1065417A CN92102146A CN92102146A CN1065417A CN 1065417 A CN1065417 A CN 1065417A CN 92102146 A CN92102146 A CN 92102146A CN 92102146 A CN92102146 A CN 92102146A CN 1065417 A CN1065417 A CN 1065417A
Authority
CN
China
Prior art keywords
working roll
roll
axis
working
backing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN92102146A
Other languages
Chinese (zh)
Other versions
CN1038483C (en
Inventor
梶原利幸
杉山德治
高仓芳生
坂中孝雄
芳村泰嗣
安田健一
加贺慎一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of CN1065417A publication Critical patent/CN1065417A/en
Application granted granted Critical
Publication of CN1038483C publication Critical patent/CN1038483C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085—Joining ends of material to continuous strip, bar or sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/12—Rolling load or rolling pressure; roll force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/07—Adaptation of roll neck bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B21B31/185—Adjusting or positioning rolls by moving rolls axially and by crossing rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/007—Control for preventing or reducing vibration, chatter or chatter marks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

Backing roll is assembled into a kind of working roll chiasma type milling train that axis does not tilt in horizontal plane, working roll wherein then is configured to contain its axis and tilts with respect to backing roll in horizontal plane, makes the axis of axis and backing roll of working roll intersect and the axis of working roll is intersected mutually.Be provided with lubricant supply device lubricant is fed between each working roll and each backing roll,, give the excellent ability that this milling train divides with controlled rolling material center convex thick part thus to significantly reduce the thrust that acts on the working roll.

Description

Milling train, hot rolling system, milling method and rolling mill revamping method
The present invention relates to a kind of milling train, more particularly, relate to a kind of superior performance, can control the part reforming method of sheet mill, a kind of hot rolling system, a kind of milling method and a kind of milling train of the working roll chiasma type for the treatment of that rolling stock center convex thick part divides.
In commercially available roller chiasma type four-high mill, the roller of forming by top working roll and top backing up roll to and the roller formed by bottom working roll and lower support roller right, they make two pair rollers intersect mutually on a horizontal plane in motion process.The four-high mill of this roller chiasma type for example has been described in " Mitsubishi Heavy Industries's technical report ", 1984 21 volumes, 12 phases, 61-67 page or leaf.In the four-high mill just working roll get cross modal the sort of than the sort of milling train of paired chiasma type propose more Zao, for example described in Japan's special permission (disclosing) 47-27159 number.But, only be that the above-mentioned paired chiasma type milling train that usefulness is rolled in heat supply just is put to practicality.
In so-called paired chiasma type milling train, promptly wherein a working roll and backing roll form to another working roll and backing roll composition to intersecting, although suppressed thrust or pulling force between backing roll and the working roll this moment, but owing to directly be subjected to the backing roll of rolling load influence, the center of its metal shaft bearing can offset the center of reduction screw, thereby torque is just arranged on this metal shaft bearing, and produce a local load for this mill stand.To hinder rolling stably operation like this and quicken the wearing and tearing of metal shaft bearing.In order to overcome these shortcomings, an adamantine beam can be set come the driving side of balanced milling train and be operated side, but just will increase the overall size of milling train like this.
In the hot rolling situation, the thrust that affacts on the not cross one another working roll generally is the 1%-2% of rolling load, and the thrust that affacts on the working roll of mutual intersection is 5% of rolling load, is the former 2 to 3 times.
Need the angle of the crossing is regulated in rolling operation, this is because the center convex thick part branch that can change rolling load in the operation of rolling or be rolled material perhaps can be proofreaied and correct the angle of the crossing of incorrect setting.These are not can be unaided by bending apparatus, thereby are having big rolling load to make the just necessary angle of the crossing of adjusting of time spent.In recent years, in the finishing support of SPHC milling train, rolling work developed towards the continous way operation already.In this continuous rolling operation, the metal shaft bearing of backing roll must be moved in the operation of rolling, that is to say, is to be under the huge rolling load, thereby a kind of special bearing must be arranged.This just makes that the structure of milling train is more complicated.Because squame enters the bottom of milling train seat seat, the maintenance work that need very bother again causes productivity ratio and greatly descends simultaneously.
Working roll is intersected just can in rolling operation, change the angle of the crossing quickly and accurately.
It is very little to make working roll intersect the power of required usefulness, is about the 1%-2% of rolling load.
Only make working roll carry out the sort of of intersection in the milling train, owing to following two reasons are failed to drop into practical.
The first, as " machine research ", nineteen ninety, 42 volumes, described in the 71-72 page or leaf, when working roll intersects with backing roll, along the axis of these rollers, have huge thrust on working roll and backing roll at 10 phases in both direction.This thrust changes because of the angle of the crossing, is about 30% of rolling load.The thrust bearing of major diameter backing roll can sustain this thrust.But the half that is no more than the backing roll diameter when the diameter of working roll just is difficult to accomplish this point.
The second, cause the wearing and tearing of roller owing to the backing roll and the relative slippage meeting of working roll.Though working roll because of the wearing and tearing that cause of rolling material be greater than the wearing and tearing that cause because of slippage relatively, just need change with new every 2 or 3 hours, do not have problems but change working roll, however per 10 days or 20 days needs replacing backing rolls, and this need use long time.Just can reduce productivity ratio greatly when therefore, needing to change backing roll owing to wearing and tearing apace regularly.
First purpose of the present invention is to provide a kind of milling train of working roll chiasma type, and it can control the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure.
Second purpose of the present invention is to provide a kind of milling train of working roll chiasma type, it can control the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll, and allow planned idle running by simple structure.
The 3rd purpose of the present invention is to provide a kind of milling train of working roll chiasma type, it can control the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure, can prevent between working roll and backing roll, to generate excessive thrust simultaneously.
The present invention's the 4th purpose is to provide a kind of milling train of working roll chiasma type, it can control the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure, allow in a planned way to dally, can prevent between working roll and backing roll, to generate excessive thrust simultaneously.
The present invention's the 5th purpose is to provide a kind of hot rolling system that includes working roll chiasma type milling train, milling train wherein can be controlled the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure, allow simultaneously in a planned way to dally.
The present invention's the 6th purpose is that for working roll chiasma type milling train provides a kind of milling method, this milling train can be controlled the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure.
The present invention's the 7th purpose is to provide a kind of hot rolling system that includes working roll chiasma type milling train, milling train wherein can be controlled the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure, allow simultaneously in a planned way to dally.
The present invention's the 8th purpose is to provide a kind of milling method for working roll chiasma type milling train, this milling train can be controlled the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure, can in the operation of rolling, change the center convex thick part branch of sheet material simultaneously.
The present invention's the 9th purpose is to provide a kind of milling method for working roll chiasma type milling train, this milling train can be controlled the center convex thick part branch for the treatment of rolling stock extremely effectively, and can successfully reduce the thrust that is applied on the working roll by simple structure, allow in a planned way to dally, can in the operation of rolling, change the center convex thick part branch of sheet material material simultaneously.
The present invention's the tenth purpose is to provide a kind of part reforming method for working roll chiasma type milling train, this milling train can extremely effectively be controlled the center convex thick part branch for the treatment of rolling stock, and can successfully reduce the thrust that is applied on the working roll by simple structure.
Limited two problems of above-mentioned working roll chiasma type milling train practicability, promptly formed the excessive thrust and the wear problem of backing roll between roller and the roller, can between roller and roller, be lubricated according to the present invention and solve.Can infer out once and between this class roller, make lubricated, the reasons are as follows.
Working roll chiasma type milling train has the ability that superior control sheet material center convex thick part divides, thereby the suitable hot-rolling mill of doing.But in being used as the working roll chiasma type milling train of hot-rolling mill is not adopt lubricant, and this is because a large amount of water under high pressure (cooling agent) of supplying with for the cooling roll surface can wash away lubricant, makes lubricating effect completely lose (or reducing to floor level); Or owing to arrive between the working roll (roll nip portion) treat the lubricant of rolling stock can hinder continue after treat nipping of rolling stock.
But recently, be supplied in this portion of nipping when only there is the material that remains hot rolling in a kind of hot-rolled lubricant that can at high temperature keep lubricating property in roll is nipped portion, its purpose is not in order to provide lubricated between working roll, but removes to reduce rolling load and rolling power.Before the tail end of rolling stock leaves milling train, promptly end the supply lubricant, and burn this kind by the rolling and high-temperature material and remain in lubricant on the work roll surface, so just can not hinder continue after treat nipping of rolling stock.
In working roll chiasma type milling train of the present invention,,, must in the operation of rolling, be lubricated between the roller through being everlasting in order to prevent to form excessive thrust between the roller because working roll is to contact under crossing condition with backing roll.In other words, the present invention realizes according to knowledge that has earlier or notion.
Inventors etc. carried out deep research and discovery, can reduce the thrust coefficient between working roll and the backing roll regularly, and not damage the character of nipping for the treatment of rolling stock.
In other words, according to following reason, realized the present invention's working roll chiasma type milling train already:
1) used certain lubricant and do not damaged the character for the treatment of rolling stock, even between roller, proceeding when lubricated.
2) behind the termination supply lubricant, although remain in the material combustion that the lubricant on the working roll has been rolled, be consolidated in securely on the surface of this kind roller but arrive the lip-deep lubricant of backing roll, still keep thereon even this roll surface is subjected to washing away also of a large amount of cooling agents.So just can prevent between roller, to form excessive thrust.
First purpose of the present invention realizes in this wise, a kind of milling train promptly is provided, backing roll wherein is designed so that their axis does not tilt in horizontal plane, working roll then is designed so that their axis internal support roller inclination with respect to the horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, and in this milling train, be provided with a feeding lubricating device, for supplying lubricant between each working roll and each backing roll.
Second purpose of the present invention realizes in this wise, a kind of milling train promptly is provided, backing roll wherein is designed so that their axis does not tilt in horizontal plane, working roll then is designed so that their axis internal support roller inclination with respect to the horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, and working roll can move on it is axial, and in this milling train, be provided with a feeding lubricating device, for supplying lubricant between each working roll and each backing roll.
The present invention's the 3rd purpose realizes in this wise, a kind of milling train promptly is provided, backing roll wherein is designed so that their axis does not tilt in horizontal plane, working roll then is designed so that their axis internal support inclination with respect to the horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, and in this milling train, be provided with a feeding lubricating device, for supplying lubricant between each working roll and each backing roll, and be provided with a kind of parts in the adjacent area of working roll, be used for preventing that the cooling water of each working roll from entering into the backing roll place.
The present invention's the 4th purpose realizes in this wise, a kind of milling train promptly is provided, backing roll wherein is designed so that their axis does not tilt in horizontal plane, working roll then is designed so that their axis internal support inclination with respect to the horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, and in this milling train, be provided with a feeding lubricating device, for supplying lubricant between each working roll and each backing roll, and be provided with a kind of parts in the adjacent area of working roll, be used for preventing that the cooling water of each working roll from entering into the backing roll place.
The present invention's the 5th purpose can realize by following manner, a kind of hot rolling system promptly is provided, wherein between roughing mill and finishing mill, be provided with a jockey, be used for connecting the material in rolling, promptly be subjected to the rolling of finishing mill then continuously for the material of the rolling mistake of roughing mill therein simultaneously.The finishing mill here is made up of a kind of like this milling train, and it comprises a pair of working roll and a pair of backing roll that is used for supporting each working roll respectively.This kind backing roll is designed so that their axis does not tilt in horizontal plane, working roll is designed so that then their axis can tilt by with respect to the horizontal plane interior backing roll, make the axis of axis and backing roll of working roll intersect, make the axis of double-working intersect mutually simultaneously.Working roll can motion on it is axial.Between working roll and backing roll, be provided with a device that is used for supplying lubricant.
The present invention's the 6th purpose is to provide a kind of milling method, it includes with following manner and regulates the step that rolling stock center convex thick part divides, the i.e. axis gradient of internal support roller with respect to the horizontal plane of control working roll in the operation of rolling, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously and make the axis of double-working be crossed as such state mutually simultaneously, and lubricant can be fed between working roll and the backing roll.
The present invention's the 7th purpose is to provide a kind of milling method, it includes with following manner and regulates the step that rolling stock center convex thick part divides, the i.e. axis gradient of internal support roller with respect to the horizontal plane of control working roll in the operation of rolling, make axis and the axis of backing roll of working roll intersect to make simultaneously the axis of double-working to intersect mutually and working roll is become such state in its motion control on axially, and lubricant can be fed between working roll and the backing roll.
The present invention's the 8th purpose is to provide a kind of milling method, it includes with following manner and regulates the step that rolling stock center convex thick part divides, the i.e. axis gradient of internal support roller with respect to the horizontal plane of control working roll in the operation of rolling, making the axis of axis and backing roll of working roll intersect makes the axis of double-working intersect mutually simultaneously, become such state at this angle of the crossing that in the operation of rolling, changes working roll, and lubricant can be fed between working roll and the backing roll.
The present invention's the 9th purpose is to provide a kind of milling method, it includes with following manner and regulates the step that rolling stock center convex thick part divides, the i.e. axis gradient of internal support roller with respect to the horizontal plane of control working roll in the operation of rolling, making the axis of axis and backing roll of working roll intersect makes the axis of double-working intersect mutually simultaneously, this control working roll in axially motion and the angle of the crossing that in the operation of rolling, changes working roll become such state, and lubricant can be fed between working roll and the backing roll.
The present invention's the tenth purpose can realize by the method that a kind of part reformation milling train is provided, the method comprises following step: the place on the mill stand relative with the bearing block of working roll is provided with some hydraulic transmissions, the direction work that the latter can be advanced according to rolling stock, and the backing roll of the axis that is made working roll in respect to the horizontal plane tilts, make the axis of axis and backing roll of working roll intersect, and make the axis of double-working intersect mutually; Such hydraulic transmission that is provided with on mill stand makes it can be according to the axial work of working roll, makes that working roll can be involutory and be able to along its axially-movable with its bearing block; Simultaneously to a kind of device of supply of lubricant is set between working roll and the backing roll.
In first part of the present invention, backing roll is designed so that its axis does not tilt in horizontal plane, working roll is designed so that then the backing roll of its axis in can be with respect to the horizontal plane is inclined to such mode, make the axis of axis and backing roll of working roll intersect, make the axis of double-working intersect mutually simultaneously.A kind of milling train that wherein has only working shaft to intersect so just can be provided.
In addition, because to being provided with the device of supply of lubricant between working roll and the backing roll, the thrust that acts on working roll just can be reduced to the degree that can not throw into question in actual job, even be double-working owing to they with backing roll between the effect of supply of lubricant when intersecting.A kind of working roll chiasma type milling train so just can be provided, and it can control the center convex thick part branch of institute's rolling stock extremely effectively.
In second part of the present invention, backing roll is designed so that its axis does not tilt in horizontal plane, working roll is designed so that then the backing roll of its axis in can be with respect to the horizontal plane is inclined to such mode, make the axis of axis and backing roll of working roll intersect, make the axis of double-working intersect mutually simultaneously.A kind of milling train that wherein has only working roll to intersect so just can be provided.
In addition, because working roll is movable on it is axial, they also just can be along its axially-movable in the operation of rolling.So can in a planned way dally.
Also have, because to being provided with the supply of lubricant device between working roll and the backing roll, the thrust that acts on working roll can be reduced to the degree that can not throw into question in actual job, though when these two working rolls since they with backing roll between supply with and the effect of lubricant to be arranged and when intersecting mutually.So just can provide a kind of working roll to prop up the forked type milling train, it can control the center convex thick part branch of institute's rolling stock extremely effectively.
In the of the present invention the 3rd and the 4th part, except that the described structure of first and second part of front, enter parts between the roller in also being provided with a kind of cooling water that prevents working roll near the working roll.Therefore, the lubricant that supplies between working roll and the backing roll just can not done the wash for cooling water, thereby has prevented the excessive thrust of formation between working roll and backing roll.
In the 5th part of the present invention, for the finishing mill that is used in hot rolling system, being provided with one between it and a roughing mill is used for the interconnective jockey of rolling stock, in this hot system, promptly be subjected to the rolling of finishing mill then continuously for the material of the rolling mistake of roughing mill, the finishing mill here is made up of a kind of like this milling train, and it comprises a pair of working roll and a pair of backing roll that is used for supporting each working roll respectively.This kind backing roll is designed so that their axis does not tilt in horizontal plane, working roll is designed so that then their axis can tilt by with respect to the horizontal plane interior backing roll, make the axis of axis and backing roll of working roll intersect, make the cross one another milling train of axis of double-working simultaneously.
In addition, because working roll is movable in it is axial, they also just can motion vertically in the operation of rolling.Therefore can in a planned way dally.
Also have, because working roll and backing roll are provided with the device of supply of lubricant therebetween, the thrust that acts on working roll just can be reduced to not the degree that can throw into question at actual job, even be double-working since its with backing roll between supply with and the effect of lubricant arranged and when intersecting mutually.So a kind of milling train of working roll chiasma type just can be provided, it is the center convex thick part branch of controlled rolling material extremely effectively.
So just, can wherein can carry out continuous rolling to the finishing mill of the milling train of this working roll chiasma type to the rolling material of roughing mill as hot rolling system.
In the 6th part of the present invention, in the operation of rolling, just the axis of working roll with respect to the horizontal plane the gradient of top backing up roll just controlled, make the axis of axis and backing roll of working roll intersect and make the axis of double-working intersect mutually, become and to make lubricant supply to state between working roll and the backing roll.Therefore, the thrust that acts on working roll can be reduced to the degree that can not throw into question in real work, though when double-working because of its with backing roll between when supplying with the effect that lubricant is arranged and intersecting mutually.
So, just can make very effectively control to the center convex thick part branch of rolling stock with a kind of milling train that wherein has only working roll to intersect.Thereby can provide a kind of milling method for working roll chiasma type milling train.
In the 7th part of the present invention, owing to outside the 6th the control operation that part carried out of the present invention the amount of exercise of working roll in axially controlled, just can be adapted to the wide variety of rolling stock, can in a planned way dally thus.So just can provide a kind of milling method for working roll chiasma type milling train.
In the 8th part of the present invention, owing to outside the control operation of in the 6th part of the present invention, being engaged in, can also in the operation of rolling, change the angle of the crossing of working roll, so can in the operation of rolling, change the center convex thick part branch of rolling stock.So just can provide a kind of milling method for working roll chiasma type milling train.
In the 9th part of the present invention, because outside the control operation that the 7th part of the present invention is engaged in, can in the operation of rolling, change the intersecting angle of working roll, the center convex thick part branch of change rolling stock that just can be in the operation of rolling.So just can provide a kind of milling method for working roll chiasma type milling train.
In the of the present invention ten part, place on the mill stand relative with the bearing block of working roll is provided with some hydraulic transmissions, the direction work that the latter can be advanced according to rolling stock, and the backing roll of the axis that is made working roll in respect to the horizontal plane tilts, make the axis of axis and backing roll of working roll intersect, and make the axis of double-working intersect at mutually a hydraulic transmission is set on the mill stand in this wise, make it can be, make that working roll can be involutory and be able to along its axially-movable with its bearing block according to the axial work of working roll.Working roll and backing roll are provided with a kind of energy give the device of supply of lubricant therebetween.So just can utilize existing mill stand to realize a kind of milling train that wherein has only working roll to intersect.In addition, because working roll can move in the operation of rolling vertically, the thrust that acts on working roll just can be reduced to the degree that can not throw into question in actual job, even be double-working since its with backing roll between be supplied with the effect of lubricant and when intersecting mutually.Like this, it is curved whole just to carry out part to such milling train, and this kind milling train is the center convex thick part branch of controlled rolling material extremely effectively, and working roll wherein intersects mutually.
Above-mentioned purpose, characteristics and the advantage with other of the present invention will obtain clearer understanding by the description of doing below with reference to accompanying drawing.In the accompanying drawings:
Fig. 1 is the schematic diagram of axially going up observed the present invention's work chiasma type four-high mill one embodiment from roller;
Fig. 2 shows bright a kind of device, is used for the working roll chiasma type four-high mill that Fig. 1 provides and makes a working roll along its axially-movable;
Fig. 3 is a curve map, is illustrated as the experimental result that sheet material center convex thick part branch is done with angle of the crossing variation in the translucent rolling operation;
Fig. 4 shows the used roll grinding device of supporting in the working roll chiasma type four-high mill of understanding among Fig. 1;
Fig. 5 shows and brightly how roll with lubricator is supplied in working roll chiasma type four-high mill among Fig. 1 with cooling agent;
Fig. 6 is a curve map, shows between the working roll angle of the crossing, working roll and the backing roll of understanding in the working roll chiasma type four-high mill relation between the thrust coefficient between thrust coefficient and working roll and rolling stock;
Fig. 7 is the curve map that obtains under the lubricant condition being added with between the roller, show thrust coefficient between the angle of the crossing, working roll and the backing roll of working roll in the working roll chiasma type four-high mill of understanding the present invention, and the relation between the thrust coefficient between working roll and rolling stock;
Fig. 8 is the diagram result who looks from the top, is used for illustrating the direction of the thrust that is produced by the working roll intersection in the above-mentioned working roll chiasma type four-high mill;
Fig. 9 for from roller axially diagram result when observing roller, show in the above-mentioned working roll chiasma type four-high mill direction of the thrust that is produced when working roll is intersected;
Figure 10 is a curve map, shows the relation of understanding between the working roll angle of the crossing and the supporting roller abrasion rate, and they are different with the difference of the lubricant between the working roll chiasma type four-high mill central roll that is supplied in the embodiment of the invention;
Figure 11 is a curve map, shows the clear result of experiment that lubricating property (coefficient of friction) changes with lubricant temperature that is used for studying here;
The experimental result of Figure 12 for from Figure 11 shown in axially the looking bright of roller, being carried out;
Figure 13 schematically illustrates how lubricant and cooling agent are supplied in working roll and backing roll;
Figure 14 is a curve map, has provided to illustrating that lubricating property can maintain the result of experiment of carrying out after ending to supply lubricant;
Figure 15 is a sketch map of seeing the axis of roller in the past from the top, and the influence of the supporting roller displacement of the lines that forms because of the working roll intersection in the working roll chiasma type four-high mill is described;
Figure 16 is the axis sketch map from axial roller in the past, is used for illustrating the influence of the backing roll line deviation that is caused because of the working roll intersection in the work chiasma type four-high mill;
Figure 17 is a schematic diagram, and the difference of the power on the hydraulic jack that is applied on the active side of this kind milling train and slave end is described, this difference of power then is that the thrust that intersects to form because of work chiasma type four-high mill central roll causes; And
Figure 18 is a kind of like this schematic diagram of hot rolling system, and the embodiment with working roll chiasma type four-high mill of the present invention in this system is used as finishing mill.
Below, some most preferred embodiments of the present invention are described.
Referring to Fig. 1 and 2, show that wherein bright working roll chiasma type four-high mill includes upper and lower working roll 7 and the upper and lower backing roll of supporting them.Roller end at each working roll 7 is provided with working roll bearing block 16, is used for rotatably support working roll 7.Similarly, be provided with back-up chock in the roller end of each backing roll 8, rotatably support backing roll 8.
It is relative with the window face of a pair of support 20 that working roll bearing block 16 and back-up chock 17 are configured to, and this then gets erect form to support, along the milling train central roll axially on separate.By the jack (not showing bright) that is located in support 20 tops or the bottom each roller is applied rolling load, with the rolling material 9 of rolling plan.
The axis of the backing roll of with respect to the horizontal plane going up for the axis that makes upper and lower working roll 78 is like tiltedly, and the axis of upper and lower working roll 7 is intersected mutually, hydraulic jack 10 and 11 is disposed on two boss 30 of support 20, the latter be located at each upper working rolls and lower working rolls two ends on two sides on each working roll bearing block relative.Operating hydraulically operated jack 10 and 11 can make upper working rolls and lower working rolls 7 intersect mutually.Hydraulic jack 10 and 11 has piston and cylinder body.Piston has the piston head that engages with boss 30, and cylinder body engages with upper working rolls and lower working rolls bearing block 16.Therefore, can move above-mentioned cylinder body, make 16 relative motions of upper working rolls and lower working rolls bearing block, so that upper working rolls and lower working rolls is intersected relatively by operation hydraulic jack 10 and 11.Hydraulic system is then supplied with hydraulic jack 10 by a switching valve 14 with oil.For the motion of the pressure head of measuring jack 10, measure the displacement of the bar 12 that is loaded on the pressure head by sensor 13.Hydraulic jack 10 is driven by a working roll intersecting angle controller 40, and this controller is according to regulating switching valve 14 with the corresponding signal of rolling condition.The signal that controller 40 also is used to autobiography sensor 13 carries out the FEEDBACK CONTROL of hydraulic jack 10, to obtain the desirable angle of the crossing of upper and lower working roll.
This angle of the crossing promptly can change under huge rolling load in the operation of rolling.
Fig. 3 is illustrated as research rolling stock center convex thick part branch and changes described experimental result of carrying out with the angle of the crossing in the operation of rolling.Therefrom can see,, can change over the thick protruding sheet material of central authorities to a smooth sheet material when the angle of the crossing changes to 0.9 when spending from 0.5 degree.
Supply with hydraulic oils for hydraulic pressure jack 11 through pressure-reducing valve 15, make the jack 11 can defeating with needs to working roll bearing block 16.
Be used for being located in 22 minutes the both sides of support 20 each working roll bearing block 16 being used for ordering about working roll 7 along its axially-movable along two hydraulic cylinders that the working roll axis drives it.Check-valves 31 with hydraulic control is sealed in hydraulic pressure in the hydraulic cylinder 22 to keep the latter's location with old.The piston rod of these two hydraulic cylinders 22 is connected on the public movable table 21.Be provided with dismountable sticking department 21a in this movable table 21, the jut 16a that forms with place, the end of working roll bearing block 16 matches, and the driving force with hydraulic cylinder 22 reaches roller 7 bearing blocks 16 whereby, thereby makes the working roll 7 can be along self axially-movable.
Though do not understand among the figure to provide, make working roll 7 be subjected to a kind of control of motion control device according to rolling condition along the operation of its axially-movable.
Shown in Fig. 1 and 2, be provided with lubricant supply nozzle 1 along the axis of each working roll, be fed to lubricant between top working roll 7 and the top backing up roll and bottom working roll 7 and lower support roller 8 between.The position of lubricant supply nozzle 1 is not limited to situation shown in Fig. 1 and 2, but can be located at any being convenient to lubricant is fed on the position between two rollers.As can be seen from Fig. 2, nozzle 1 has a plurality of ejiction openings that axially are in line along roller 7 and 8, and lubricant can be conducted on these rollers equably.
Owing to have a large amount of cooling agents to be supplied in working roll 7, be provided with scraper plate 32 and prevent to wash away required lubricant from nozzle 2.
For prevent that upper and lower backing roll is offset in rolling, the window face 20a relative with back-up chock 17 sides in support 20 is provided with a hydraulic jack 19, and this kind bearing block then is divided into each end of upper and lower backing roll 8.The driving force that one pressing plate 18 transmits hydraulic jack 19 is installed on support 20 slidably.This hydraulic coupling of jack 19 acts on the back-up chock 17 through pressing plate 18, is eliminated or the skew of lower support roller 8.
Near each roll surface of upper and lower backing roll 8, be provided with a roller with lapping device 6, be used in the operation of rolling, grinding roll surface.As shown in Figure 4, this lapping device 6 is the axially-movable that a CD-ROM drive motor 24 drives along backing roll 8.Adjust the degree that roller is ground by an amount of grinding controller 6a.
As shown in Figure 5, in this working roll chiasma type four-high mill, the lubricant of seasoning in case 26 is sprayed onto between working roll 7 and the backing roll 8 through a switching valve 28 by pump 27 from lubricant nozzle 1.When intending that rolling material 9 comes across two rollers or becoming to leave roller, must end the jet lubrication agent.Thereby when a lubricant controller 50 receives the signal of an expression rolling condition, for example stop or begin to supply when treating rolling material, this controller promptly changes switching valve 28, ends on lubricant is from the nozzle to the roll surface.Application roll cooling jet 2 and 3 comes cooling work roller and backing roll.
In above-mentioned working roll chiasma type four-high mill, though backing roll 8 does not move in horizontal direction, but 7 of double-workings can make them intersect mutually according to the relative direction motion thus.The milling train of this chiasma type is applicable to SPHC milling train (wherein must form big center convex thick part branch in treating rolling material 9), and particularly suitable is made the preceding support of finishing mill.At this course of hot rolling, in view of the interlock character of rolling stock 9, from roller with cooling jet 2 and 3 mainly with cold water injection on upper and lower working roll 7.In the rolling operation of this kind working roll chiasma type, what be concerned about the most is how can reasonably solve the thrust that affacts on the working roll.
A collection of curve among Fig. 6 has shown thrust coefficient between the angle of the crossing, working roll and backing roll in this working roll chiasma type four-high mill and the thrust coefficient between working roll and rolling stock respectively.In Fig. 6, transverse axis is represented the angle of the crossing of single working roll with respect to a straight line in the vertical rolling direction, and the longitudinal axis is then represented thrust coefficient.μ TMFor rolling stock 9 acts on thrust on the single working roll 7 divided by the percentage of rolling load gained.This μ T-M is for example function of decrement of angle of the crossing θ and other condition.In general, this decrement is big more, μ TMJust more little.In paired transverse rolling situation, owing to do not have the angle of the crossing between working roll and the backing roll, saying so theoretically can not produce thrust, and the thrust that acts on the single working roll can multiply by μ by rolling load TMTry to achieve.Be the situation that upper working rolls and lower working rolls intersects, 7 formed thrusts of backing roll and working roll are then different because of rolling condition.Among Fig. 6, three examples of this class thrust have been provided, μ TR1, μ TR2With μ TR3μ TR1Refer to only water is supplied in the experimental result between backing roll 8 and the working roll 7.μ TR2Refer to be supplied to the experimental result that has low concentration lubricating oil in the water between two rollers.μ TR3Refer to be supplied to the result who has higher concentration lubricating oil in the water between two rollers.As can be seen from Fig. 6, can reduce thrust μ greatly by lubricating oil being fed between two rollers TRThe concentration of selected this kind lubricating oil just can be selected thrust μ TRIn above-mentioned several experiments, concentration changes.In a word, the emulsification amount that can change lubricating oil and water changes thrust.
The thrust coefficient μ that acts on working roll 7 shown in Figure 7 MTBe that the axis of working as working roll intersects with rolling stock 9 and backing roll 8, when backing roll 8 was fixed in the horizontal direction simultaneously, promptly this value was that thrust is resulting divided by rolling load.This thrust coefficient μ MTBe a percentage, the thrust sum that expression thrust that backing roll acted on and rolling stock are acted on.
In traditional paired chiasma type milling train, μ WTWith the μ shown in Fig. 6 T\ M is identical.Should be noted that the direction that is acted on the thrust that the direction of the thrust of working roll 7 is applied to it with backing roll 8 by rolling stock 9 is opposite mutually.
Below with reference to Fig. 8 and 9 this is gone through.
Fig. 8 shows the speed at contact site A place between the working roll 7 that provides and the rolling stock 9 in Fig. 9, with the two relation of the speed that contacts the B place between working roll 7 and the backing roll 8.V MRefer to the speed of this material, V at contact site WThe circumferential speed that refers to working roll, and V BThe circumferential speed that refers to backing roll.
Working roll 7 is subjected to relative velocity △ V between working roll 7 and the rolling stock 9 ARelative velocity △ V between thrust on the direction and working roll 7 and the backing roll 8 BThe two the effect of thrust on the direction.Because the direction of these two relative velocities is opposite, two kinds of thrusts also just disappear mutually.
At contact site A, material 9 is subjected to rolling, thrust thereby reduce, i.e. μ shown in Fig. 6 TMReduce.However, at the situation of spraying, μ with water WT1Direction and μ TMOpposite, Here it is because the thrust of backing roll 8 effects is bigger, μ MT1Be about 25%.In the milling train of practical application, because the design of thrust bearing, this thrust must be 5 or littler.Like this, under this method of spraying, can not reach this thrust magnitude with water.In addition, the wearing and tearing of the wearing and tearing of backing roll and working roll are all very big.When supplying with the lubricating oil of low concentration, μ WT2Be 20% or littler, this is similar and normal obtained identical when rolling.When the concentration increase of lubricating oil, although μ WT3Direction and μ TMIdentical, but numerical value reduces to μ TMPartly.Like this,, just thrust can be reduced to the normal type milling train, i.e. the not cross one another the sort of milling train of the working roll wherein value that can obtain by suitably regulating the concentration of lubricating oil.
Although affact the viewpoint of the thrust on the working roll, μ from minimizing TR=μ TmBe the result who wishes most, but consider, then wish to have μ from the wearing and tearing of eliminating roller TR＜μ Tm
Figure 10 shows bright by the lubricant supply nozzle, for providing lubricating condition between working roll 7 and the backing roll 8, greatly reduces the result of the test of backing roll 8 wearing and tearing.The material of backing roll 8 is that abrasive hardness is HS60 ° a special steel, and the material of working roll is the high chrome of HS75 ° of hardness.Contact stress P between two rollers 0Be 180kg/mm.Total revolution is 250000.The angle of the crossing between roller is 0 °, 0.6 ° and 1.2 °.In the SPHC milling train, when in backing roll is used in last stage of finish rolling, having rotated through 200000 times, just should more renew.When this backing roll is used for the after-stage of finish rolling, before its more new, rotated 200000 times.As shown in figure 10, have in supply under the condition of lubricant, the wear rate of backing roll reduces to 1/5 to 1/10 than supply during water.In the not cross one another four-high mill of roller, when working roll rotates when reaching 250000 times already, the class scale bits that fly from rolling stock will make backing roll produce the wearing and tearing of the big μ m of number.This class wearing and tearing that taken place when working roll intersects can be regarded as indicated wearing and tearing sum among the wearing and tearing that take place under the conventional situation and Figure 10.Yet,, can reduce the wearing and tearing under the conventional situation equally effectively by lubricated.
Adopt above-mentioned lubricating method, can solve all foregoing problems in traditional roller chiasma type milling train.In addition, features simple structure.In other words, be diverted to the situation of intersecting between the working roll already, promptly having been affirmed as the thing negating traditionally for the knowledge that between two kinds of rollers, is lubricated.
In traditional paired chiasma type milling train, owing to the influence that backing roll and the relation between working roll are not intersected, the distribution of contact pressure keeps same between the roller.In having only working roll 7 cross one another milling trains, perhaps think the intersection that equivalence will take place between these rollers, the pressure of middle body is increased.But this situation can not take place, and the reasons are as follows.When the length of roll surface is 2000mm, the diameter of working roll 7 is 700mm, and the diameter of backing roll 8 is 1500mm, and the angle of the crossing of working roll 7 is when being 1.2 °, the clearance C of two roll end RCan be expressed as
(equation 1)
C R= (δ 2)/(2(R 1+R 2))
δ＝θ (L)/2 ＝ 1.2/57 × 2000/2 ＝21（mm）
C R= (21 2)/(2(350+750)) = 441/(700+1500) =0.200(mm)
R in the following formula 1With R 2Be respectively the radius of working roll 7 and backing roll 8.
Resulting gap when above-mentioned gap is equivalent to grind the roll crown of 0.4mm on backing roll 8.In the used milling train of reality, even when 1mm or higher roll crown, also can guarantee safety work.
1.2 ° the angle of the crossing just be enough to guarantee to have sufficient control ability.In addition, the advantage that it can also guarantee to obtain from the variation of backing roll 8 convexitys (according to estimates, when the angle of the crossing is 1.2 °, roll crown be changed to 10% to 20% o'clock comparatively favourable).The angle of the crossing θ like this, here can be less than in the paired chiasma type milling train.
Second requirement to working roll chiasma type milling train is to be lubricated between roller.
The experimental result that is stated as research lubricating oil effect below and carried out.In recent years, for the wearing and tearing that reduce working roll, rolling load and rolling power, with a kind of so-called hot-rolling oil (with 1% or lower concentration) be used for the hot rolling technology.The feature of this hot-rolling oil is, it can keep its lubricating effect when high-temperature material is present in 700 ℃ or the above roll gap, contain the fatty oil of a large amount of for example butter and so on simultaneously.Main a kind of lubricating oil of forming by mineral oil, it can be a kind of soluble oil that contains emulsifying agent, can reduce greatly or the lubricant effect when losing high temperature, rolled piece then has no adverse effect but breaker roll is nipped.
Utilize result shown in Figure 11 that this is gone through below.A portion among Figure 11 and B correspond respectively to A portion and the B portion among Figure 12.Here it is, a kind of mineral oil origin lubricating oil (comprising soluble oil) that greasy property is very low, guaranteed that coefficient of friction can arrive by height, the degree that the B portion place that contacts with rolling stock is reached when not providing lubricated, but demonstrate the good lubrication performance that there is low-friction coefficient in the A portion that guarantees at low temperature.An example of above-mentioned lubricating oil is Japanese IDEMITSU KOS AN company's manufacturing " Daphne Roll Oil SL-2 " (trade name).This lubricating oil mainly is mineral oil and comprises special emulsifying agent, oil improvement material and anti-corrosion material that it has following physical property;
15/4 ℃ 0.9295 of proportion
Color order (ASTM) 20
Flash-point (COC) ℃ 164
Viscosity coefficient CSt
@40℃ 22.94
@100℃ 4.11
Viscosity index (VI) 58
Fluidized point ℃-175
Total acid number mgKOH/g 3.58
Residual carbon percentage by weight 0.5
Ash percentage by weight 0.17
Saponification number mgKOH/g 12.30
Copper coin corrosion (100 ℃ * 3h) 1
Fatty oil type lubricating oil for example butter not only has greasy property in the B of high temperature portion equally in A portion.Thereby when the rolling stock of nipping has come into existence this class lubricating oil, can cause the inefficacy of nipping.
Can not throw into question when like this, in continous way SPHC milling train, adopting this fatty oil type lubricating oil.But in supplying with the SPHC milling train for the treatment of rolling stock one by one, the lubricant that is attached on the working roll 7 might cause the inefficacy of nipping in turn.In addition, roller quickened afterwards or when slowing down, because rolling load has been reduced to zero, very low coefficient of friction can cause between roller because of the inertia of backing roll 8 and skid between two rollers when material leaves already.Like this, the coefficient of friction of roll surface must raise after roller immediately at material, and ends the supply lubricant at material before roller.Under this kind situation, require to supply lubricant continuously, before rolling material is about to leave roller.
When ending when nozzle shown in Figure 13 1 is supplied lubricant, as shown in figure 14, lubricating effect does not disappear immediately.Although thrust coefficient (thrust) begins in about 1 minute to increase after ending the lubricant supply, the degree that increases is very little, has only increased by 0.025 in 5 minutes after termination.Generally, after the tail end of last material leaves roller, need 1 to 3 minute approximately, thereby lubricating effect can remain to fully for a long time to the continuous mutually rolling stock for the treatment of that begins to nip.
Ending the method for supplying lubricating oil is described with reference to the Fig. 5 that shows a bright control system.
At first, before the length l of rolling stock 9 tail ends is pi/2 DW, represent that with one the signal of rolling condition inputs to lubricant controller 50, in view of the above, lubricant controller 50 outputs one operation signal is given switching valve 28, closes and closes lubricant supply nozzle 1.At this moment, be attached to already during the period working roll 7 girth pi/2 DW half on lubricant just because of the effect carbonization of the rolling stock 9 of heat, more lose its lubricating ability thus.But the lubricant that is attached on the backing roll 8 is can directly not contact with rolling stock 9, thereby will remain on this backing roll.So the lubricating effect that working roll 7 and backing roll are 8 is kept, and can during rolling and not rolling, before two rollers, provide lubricated.
If select a kind of lubricant that can wash off with nozzle 2 and 3 cold water of being supplied by roller cooling, aforementioned means is arranged and can should be with lubricator in the whole operation of rolling with regard to unnecessary.Here it is, quickens when leaving roller in rolling stock or when slowing down, end the supply of lubricant, and making working roll withdraw the angle of the crossing to is 0 position, increases the equilibrant force of roller then.Because only be that working roll 7 intersects, intersectional friction is less, thereby can carry out cross-operation when roller rotates apace.
When adopting mineral type lubricant, as mentioned above, can be without interruption.Can alternately adopt fatty oil type hot-rolling oil and mineral lubricating oil.Can be arranged in other words:, only supply the lubricating oil of hot rolling when having in the milling train when treating rolling material; When wherein not having this material, only supply mineral type lubricating oil.Like this, can not treat nipping of rolling stock and do not influence in the lubricating condition that maintains during the entire job between roller.
That has described in course of hot rolling above to be carried out is lubricated.In cold-rolled process, lubricant is keeping form without interruption, and can not relate to the problem of nipping.Thereby the lubricant that passes through the suitable type of supply between backing roll 8 and working roll 7 just can be realized lubricated purpose.
When having only water to supply between the roller because of the moving high wear problem that causes roller of borrowing of roller, by according to just alleviating significantly behind the aforesaid way supply of lubricant.But this will increase the degree of wear of the middle body of roller.Adopt online lapping device 6 shown in Figure 5 to grind the outer surface of backing roll 8 for this reason.Make it straight or have predetermined convexity.
Proposed to be used for grinding working roll 7 and the lapping device that needs often renewal already.But the maintenance work roller 7 of working roll 7 is very hard, require during its surface of fine finishining be of high quality and do not have enough spaces because be provided with guiding device or cooling water.To backing roll 8 in fact, polishing is not difficult, and is hard because this roller does not resemble the working roll, and the requirement of surface quality is also not as the working roll height.Even in the time need not proofreading and correct roll profile, polish with regard to interchangeable lower support roller 8, in order to remove the fatigue layer that produces by hertz (Hertz) stress because of the contact of two roll shapes.Like this, if the correction of roll shape can be carried out simultaneously and remove fatigue layer, just can increase the roll change spacing greatly.Changing backing roll is a large order, normally carries out during preventive overhaul.In real work, change backing roll and regularly carry out.But, can be when adopting said method by the polishing that plate carries out backing roll 8 that rolls that will be eliminated.At this moment, mill is to adopt online lapping device to polish backing roll 8, and need not the sort of high price and large-scale backing roll lapping machine.A kind of like this backing roll lapping machine not only can be used for the backing roll of above-mentioned working roll chiasma type four-high mill, and is applicable to all types of milling trains, for example four-roller type, five roll-types or six-roll type.The crosspoint displacement that attention causes because of the roll bearing play, maximum this play then are to be present between the metal shaft bearing of roll and support 20 or the boss 30 within the crack.Can be equipped with a kind of mechanism that reduces play for the intersection mechanism of working roll 7.Concerning backing roll 8, because its gap is normally fixing, in the present invention, such gap width transfers to a very little value in the operation of rolling, and transfers to a big value during roll change.In addition, the bearing block of backing roll 8 can be pressed to support along a direction under a fixing hydraulic pressure in the operation of rolling, and when roll change this form that overlays of pine oil.
A kind of like this desirability of structure is discussed below with reference to Figure 15 and 16.
Backing roll 8 can cause the micro-displacement of working roll 7 angles of the crossing, but can not cause serious problems because its bearing intersects the inclination at center with the gap of 20 on support around working roll 7.But the axis of backing roll 8 has a displacement e on rolling direction, will make the crosspoint of two rollers that one displacement a=e/ θ is arranged in the axial direction, and this just forms a difference in the gap of upper and lower working roll, causes the zigzag of rolling stock 9.In order to eliminate this phenomenon, must come the correction for reduction level with Sdf.Here, as shown in figure 16 with R 1Be the radius of working roll 7, R 2Be the radius of backing roll 8, and L is the distance between two reduction screws, the side-play amount at two roller centers is e, and g is increased to C with roll gauge 2/ 2(R 1+ R 2), so just make right-hand G increase as follows: (equation 2) with left reduction position gap
G = 1/(2(R 1+R 2)) [{ (L)/2 +a)θ} 2-{( (L)/2 -a)θ} 2]= (Laθ 2)/(R1+R2) = (Leθ)/(R 1+R 2)
Poor Sdf corresponding to the spiral response reductor of G descends equation to try to achieve according to this
(equation 3)
S df= (L)/(R 1+R 2) ·eθ
In large-scale SPHC milling train, if R 1=700/2=350mm, R 2=1500/2=750mm, L=3000mm and θ=1.20, then Sdf can descend equation to try to achieve according to this, and wherein the unit of e is mm.
(equation 4)
Sdf＝0.05e
Owing to can not proofread and correct Sdf according to e actually, promptly can not proofread and correct the level that reduces, so e must be reduced to negligible value in practical operation.According to above experimental result, in the SPHC planishing stand situation of rolling slab, in the leading portion mill stand, Sdf is 0.05mm, and in the back segment mill stand, Sdf is about 0.025mm.At this moment, the displacement e that the backing roll center allows in the leading portion mill stand is ± 1mm, and in the back segment mill stand is ± 0.5mm.Yet this value is the smaller the better.
In the thin milling train of the hot rolling of existing practicality, planned idle running is a key factor.For the wearing and tearing that make working roll are evenly distributed out, working roll displacement vertically is absolutely necessary.So the dispersive property of protruding high control ability and wearing and tearing becomes the object that requires of SPHC milling train.In the present embodiment, owing to can reduce in the power of axial action in working roll 7, so can simplify the displacement mechanism of working roll.
The difference that acts on the power on the jack that explained later causes because of thrust.In Figure 17, when rolling stock is applied with thrust F1 and produces between two rollers when thrust F2 is arranged, existence one load difference △ Q between the jack of the left and right sides just.In Figure 17, △ Q obtains by following form:
(equation 5)
△Q＝ 1/(L) ｛ 1/2 （F 1+F 2）D W+ 1/2 F 2D B｝
If L=3000mm, D W=700mm, D-B=1500mm, and F 1=F 2=0.05 * P, promptly establishing thrust is 5%,
(equation 6)
So △=0.024P (6)
In other words, produced 2.4% rolling load.If thrust is 100%, then △ Q reaches 4.8%.
Like this, thrust F 1With F 2Reduce, particularly between roller thrust to reduce be favourable.
Above-mentioned two kinds of difference that reduced power are unfavorable for proofreading and correct zigzag, because in this correction, can detect the difference between load, and will regulate this two kinds of power that reduce, and this difference is eliminated.Proofread and correct zigzag although can use the load difference △ Q of the prior storage that obtains from thrust, the variation meeting of thrust causes disturbance in zigzag is proofreaied and correct, thereby requires to reduce as much as possible thrust.
It is the operation of working roll cross-linking type four-high mill that the foregoing description is described below.
Referring to Fig. 1 and 2, the upper and lower working roll 7 that makes rolling pending material 9 by hydraulic jack 10 and 11 is from their both sides pressurization, makes their the axis angle θ that tilts in the opposite direction respectively.In the operation of rolling, working roll 7 promptly remains in this kind position.The angle of the crossing of working roll 7 will be regulated according to following manner.The sensor of being located on the hydraulic jack 10 13 passes through the traverse that bar 12 is surveyed these jack, that is the position of working roll bearing block 16.11 of another hydraulic jack push this working roll bearing block 16 with a pressure that regulated by pressure-reducing valve 15.After opening the angle of the crossing that switching valve 14 regulates working roll, promptly close and close this switching valve 14 and keep the angle of the crossing of this setting.In the operation of rolling, utilize hydraulic jack 19, make the bearing block 17 of backing roll 8 of supporting working roll 7 overlay window face 20a by pressing plate 18, and make backing roll 8 can remain in stationary state away from the support 20 of hydraulic jack 19.The gearshift of working roll 7 is described in detail in detail below.The bearing block 16 of working roll 7 is subjected to the supporting of movable table 21.This bearing block 16 can be to be led for it by a locating rack 23 by the hydraulic cylinder 22 that is connected with movable table 21 with the axially-movable of movable table 21 along working roll 7 simultaneously.Because the bearing block 16 that the result of intersecting makes working roll 7 is towards the rolling direction displacement, movable table 21 just must be rotated according to the position of bearing block 16.Therefore, the guide part of locating rack 23 is got cylindrical so, enables to follow the cross-operation of roller.
For intersecting, compensation work roller 7 between roller, produces relative sliding velocity △ V B(Fig. 9) make backing roll 8 wearing and tearing, be provided with roller lapping device 6 shown in Figure 3.This lapping device 6 is with the axially-movable of CD-ROM drive motor 24 according to backing roll 8, and the surface of polishing backing roll 8 simultaneously makes roll surface be polished to straight or crooked form thus.The lubricated of roll surface is described below with reference to Fig. 5.Supply with working roll from roller cooling jet 2 and 3 and make it cooling with cooling agent.In order to reduce the thrust of 8 of working roll 7 and backing rolls, the concentration examples of suitable lubricants is supplied to entry adjacent area between these two rollers from nozzle 1.The lubricant is here replenished to lubricant nozzle 1 from case 26 by pump 27 by switching valve 28.Like this, the supply of lubricant just can be ended at reasonable time by closing switching valve, for example, and when rolling material has left roller or when it is supplied in roller.
From optimum position that nozzle 1 is supplied lubricant as shown in Figure 5.But, lubricant can also be fed on other position, for example supply on the periphery of backing roll 8, make it finally from supplying to here between two rollers.
From above narration as can be known, the working roll chiasma type four-high mill of present embodiment can overcome the shortcoming that the working roll intersection is caused, thereby can drop into practical application.
Described already to realizing the mechanism and the structure of required function necessity.But it should be noted that the present invention's purpose also can also realize by other similar structure.For example available a kind of Worm type jack or wedge mechanism replace the intersection that hydraulic jack realizes working roll 7.
The four-high mill that has is earlier repaired, utilized the support 20 that milling train is arranged earlier again, just new support can be set and above-mentioned working roll chiasma type four-high mill is provided.Paired working roll 7 in the four-high mill is arranged earlier and be used for supporting respectively the paired backing roll 8 of working roll 7, can be trimmed to working roll chiasma type four-high mill according to following manner; The position relative on support 20 with the bearing block 16 of working roll 7, the jack 10 and 11 of fluid pressure type device is set, the direction work that their energy rolling stocks are sent into, the backing roll that working roll 7 can with respect to the horizontal plane be gone up is inclined to, can allow the axis of working roll 7 and the axis quadrature of backing roll 8, and the axis of double-working 7 is intersected mutually.Remove this and still be provided with hydraulic cylinder 22, it can be along the axially-movable of working roll, combine with the bearing block 16 of working roll 7 to make working roll 7 along himself axially-movable, and the device 2 of supplying lubricant then is located between working roll 7 and the backing roll 8.
Like this, utilize the support 20 that milling train is arranged earlier just may obtain the milling train that wherein has only working roll 7 to intersect.In this milling train, because working roll 7 can just can dally according to plan along self axially-movable in rolling.In addition, because the thrust that affacts on the working roll 7 can reduce to the degree that can not throw into question, even when the effect of working roll 7 by device 1 supply of lubricant between working roll 7 and the backing roll 8 intersects, also can not bring problem, such roll can demonstrate can the protruding thick superior function of controlled rolling material core.
Describe below with reference to Figure 18 above-mentioned working roll chiasma type four-high mill is applied to hot rolling system.
Figure 16 shows clear a kind of hot rolling system, be provided with a jockey 63 between roughing mill 61 therein and the finishing mill 62, be used for engaging in order rolling stock 9, here, when being roughing mill 61 rolling intact materials after jockey 63 engages each other mutually, engage good material and just be subjected to the rolling of finishing mill 62 continuously.In this batch finishing mill 62, have at least one to form by aforesaid milling train.It includes a pair of working roll 7 and supports this a pair of working roll 8 to working roll respectively, the axis of backing roll 8 does not wherein tilt in horizontal plane, the working roll 8 that working roll 7 then can with respect to the horizontal plane be gone up tilts, make the axis of axis and backing roll 8 of working roll 7 intersect, make working roll 7 intersect mutually simultaneously, here, working roll 7 can be provided with lubricant supply device 1 and supply lubricant between working roll 7 and backing roll 8 simultaneously along self axially-movable.
A kind of milling train that wherein has only working roll 7 to intersect can be provided like this.
In addition, because working roll can be along self axially-movable, they just can move along axle in the operation of rolling, and can in a planned way dally.
Also have, because being provided with lubricant supply device 1 is used for lubricant is fed between working roll 7 and the backing roll 8, the thrust that affacts on the working roll 7 can reduce to the degree that can not bring problem in actual job, when two working rolls 7 intersect mutually because working roll 7 has the effect of lubricant with 8 of backing rolls, can not throw into question even yet.So a kind of working roll chiasma type milling train just can be provided, this milling train has the excellent ability of the center convex thick part branch of energy controlled rolling material 9.
Like this, this kind working roll chiasma type milling train can be as the finishing mill of hot rolling system, in this hot rolling system, for the material of roughing mill rolling promptly is subjected to the rolling of finishing mill continuously.
The structure of the milling train of above-mentioned present embodiment is simple than conventional paired chiasma type four-part form milling train, but can more effectively control the center convex thick part branch of sheet material.
The above-mentioned milling train of present embodiment also has additional advantage, and promptly it can reduce the thrust that acts on the working roll widely, and this is the requirement to chiasma type milling train most critical.Therefore, the thrust bearing here can be done very simply, and the diameter of working roll can reduce, and moving of working roll also can be simplified.This last point is very important in the continuous rolling operation, and working roll wherein must displacement in the operation of rolling.In paired chiasma type milling train, in rolling advancing, change the angle of the crossing, require between the bearing of backing roll and deceleration device, to have relative motion, need complicated structure simultaneously.But in the present embodiment, then be easy to change the angle of the crossing apace, change because this variation is exactly the angle of the crossing of the roller that rotating.So present embodiment is applicable to continuous rolling.In addition, by using suitable lubricant, just can significantly reduce the wearing and tearing that cause roller because of the slip of roller.Adopting online lapping device to improve wear problem, removed fatigue layer simultaneously, thereby improved greatly the cycle that backing roll changes operation, is a numerous and diverse job and change backing roll.
According to first part of the present invention, a kind of working roll chiasma type milling train can be provided, it has controlled rolling material center convex thick part and divides thick excellent ability, and can borrow simple structure to reduce to affact thrust on the working roll.
According to second part of the present invention, can improve a kind of working roll chiasma type milling train, it has the excellent ability that controlled rolling material center convex thick part divides, and can reduce to affact thrust on the working roll by means of simple structure, allows simultaneously in a planned way to dally.
According to the 3rd part of the present invention, a kind of working roll chiasma type milling train can be provided, it has the excellent ability that controlled rolling material center convex thick part divides, and can borrow simple mechanism to reduce to affact thrust on the working roll, can prevent the excessive thrust of generation between working roll and backing roll simultaneously.
According to the 4th part of the present invention, a kind of working roll chiasma type milling train can be provided, it has the excellent ability that controlled rolling material center convex thick part divides, and can borrow simple structure to reduce to affact thrust on the working roll, it allows in a planned way to dally, and can prevent to produce between working roll and backing roll excessive thrust simultaneously.
According to the 5th group of part of the present invention, a kind of hot rolling system that includes working roll chiasma type milling train can be provided, this milling train has the excellent ability that controlled rolling material center convex thick part divides, and can borrow simple mechanism to reduce to affact thrust on the working roll, and allow dallying on plan ground.
According to the 6th part of the present invention, can provide a kind of milling method for working roll chiasma type milling train, this milling train has the ability that controlled rolling material center convex thick part divides, and can borrow simple mechanism to reduce to affact thrust on the working roll.
According to the 7th part of the present invention, can provide a kind of milling method for working roll chiasma type milling train, this milling train has the ability that controlled rolling material center convex thick part divides, and can borrow simple mechanism to reduce to affact thrust on the working roll, and allow in a planned way to dally.
According to the 8th part of the present invention, can provide a kind of milling method for working roll chiasma type milling train, this milling train has the ability that controlled rolling material center convex thick part divides, can borrow simple mechanism to reduce to affact thrust on the working roll, and can in the operation of rolling, change this center convex thick part branch.
According to the 9th part of the present invention, can provide a kind of milling method for working roll chiasma type milling train, this milling train has the ability that controlled rolling material center convex thick part divides, can borrow simple mechanism to reduce to affact thrust on the working roll, allow in a planned way to dally, and can in the operation of rolling, change this center convex thick part branch.
According to the tenth aspect of the invention, can provide a kind of part reforming method for working roll chiasma type milling train, this milling train has the ability that controlled rolling material center convex thick part divides, and can reduce to affact thrust on the working roll by means of simple structure.

Claims (15)

1, a kind of milling train, on mill stand, be provided with a pair of working roll and a pair of backing roll that is used for supporting respectively working roll, the axis that backing roll wherein is designed to them does not tilt in a horizontal plane, the axis that working roll then is designed to them can tilt with respect to backing roll in a horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, and be provided with a lubricant supply device, be used for lubricant is fed between each working roll and the backing roll.
2, a kind of milling train, on mill stand, be provided with a pair of working roll and a pair of backing roll that is used for supporting respectively working roll, the axis that backing roll wherein is designed to them does not tilt in a horizontal plane, the axis that working roll then is designed to them can tilt with respect to backing roll in a horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, working roll can be along himself axially-movable, and be provided with a lubricant supply device, be used for lubricant is fed between each working roll and the backing roll.
3, a kind of milling train, on mill stand, be provided with a pair of working roll and a pair of backing roll that is used for supporting respectively working roll, the axis that backing roll wherein is designed to them does not tilt in a horizontal plane, working roll is designed so that then their axis can tilt with respect to backing roll in a horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, and be provided with a lubricant supply device, be used for lubricant is fed between each working roll and the backing roll, simultaneously between each working roll and backing roll, vicinity at each working roll is provided with parts simultaneously, is used for preventing that the cooling water of working roll from entering between two rollers.
4, a kind of milling train, on mill stand, be provided with a pair of working roll and a pair of backing roll that is used for supporting respectively working roll, the axis that backing roll wherein is designed to them does not tilt in a horizontal plane, working roll is designed so that then their axis can tilt with respect to backing roll in a horizontal plane, make the axis of axis and backing roll of working roll intersect, make the axis of working roll intersect mutually simultaneously, and be provided with a lubricant supply device, be used for lubricant is fed between each working roll and the backing roll, simultaneously between each working roll and backing roll, vicinity at each working roll is provided with parts simultaneously, is used for preventing that the cooling water of working roll from entering between two rollers.
5, the milling train of addressing as claim 1, wherein said backing roll is designed to, the power that hydraulic means on the side that is located at support one window is produced affacts on this back-up chock by a pressing plate spare, does not make this bearing block press to the opposite side of above-mentioned window thus.
6, as the milling train that each is addressed in the claim 1 to 4, wherein said lubricant is mainly based on mineral lubricant.
7, milling train as claimed in claim 1, it also comprises a lapping device that is used for grinding the backing roll surface, this kind lapping device is designed to can be along the axially-movable of backing roll.
8, milling train as claimed in claim 1, it also comprises a kind of control device, is used for controlling the supply of aforementioned lubricants feeding mechanism to lubricant according to rolling condition.
9, a kind of hot rolling system, it is provided with jockey between roughing mill and finishing mill, be used for engaging the material that is rolled, feasible material for the roughing mill rolling can be that finishing mill is rolling continuously, wherein said finishing mill is made up of a kind of like this milling train, the latter comprises a pair of workpiece roller and a pair of backing roll that is used for supporting this working roll respectively, this backing roll is designed to its axis and does not tilt in a horizontal plane, and being designed to their axis, working roll can in a horizontal plane, tilt with respect to working roll, make the axis of this working roll to intersect with the axis of supporting beaming roller, make the axis of working roll intersect mutually simultaneously, this kind working roll can be along himself axially-movable, and being provided with a lubricant supply device simultaneously can be fed to lubricant between working roll and the backing roll.
10, a kind ofly use the method that following milling train is rolled, this milling train comprises a pair of working roll and a pair of backing roll that is used for supporting respectively this working roll, wherein the center convex thick part of rolling stock divides and controls by following mode: the axis of the control working roll gradient of internal support roller with respect to the horizontal plane in the operation of rolling, the axis that makes working roll intersects with the axis of backing roll and makes the axis of working roll be crossed as such state mutually, so that lubricant can be fed between each working roll and each backing roll.
11, a kind ofly use the method that following milling train is rolled, this milling train comprises a pair of working roll and a pair of backing roll that is used for supporting respectively this working roll, wherein the center convex thick part branch of rolling stock is regulated by following mode: in the operation of rolling, the axis of control working roll is the gradient of internal support roller with respect to the horizontal plane, the axis that makes working roll intersects with the axis of backing roll and makes the axis of working roll be crossed as such state mutually, so that lubricant can be fed between each working roll and each backing roll; Control the motion on himself is axial of working roll simultaneously.
12, a kind ofly use the method that following milling train is rolled, this milling train comprises a pair of working roll and a pair of backing roll that is used for supporting respectively this working roll, wherein the center convex thick part branch of rolling stock is regulated by following mode: in the operation of rolling, the axis of control working roll is the gradient of internal support roller with respect to the horizontal plane, the axis that makes working roll intersects with the axis of backing roll and makes the axis of working roll be crossed as such state mutually, so that lubricant be fed between each working roll and the backing roll; In the operation of rolling, change the angle of the crossing of each working roll simultaneously.
13, a kind ofly use the method that following milling train is rolled, this milling train comprises a pair of working roll and a pair of backing roll that is used for supporting respectively this working roll, wherein the center convex thick part branch of rolling stock is regulated by following mode: in the operation of rolling, the axis of control working roll is the gradient of internal support roller with respect to the horizontal plane, the axis that makes working roll intersects with the axis of backing roll and makes the axis of working roll be crossed as such state mutually, so that lubricant be fed between each working roll and the backing roll; The motion of control working roll on himself is axial; In the operation of rolling, change the angle of the crossing of each working roll simultaneously.
14, milling method as claimed in claim 10 is wherein promptly ended the supply of lubricant after the material that is rolled is separated from roller.
15, a kind of mill stand is provided with a pair of working roll and a pair of milling train that is used for supporting respectively the backing roll of this working roll carries out the method that part is reformed, it comprises following each step:
On the mill stand position relative, a hydraulic means is set with the bearing block of each working roll, the direction operation that makes it be rolled according to material, and the with respect to the horizontal plane interior working roll of axis that causes working roll tilts, make the axis of axis and backing roll of working roll intersect, and the axis of working roll is intersected mutually;
Another kind of hydraulic means is set on this mill stand, and only it is according to the axial operation of each working roll, makes it to combine with the bearing block of working roll and drives working roll along it self axially-movable;
Be provided with a kind of lubricant supply device simultaneously, be used for lubricant is fed between working roll and the backing roll.
CN92102146A 1991-03-29 1992-03-28 Rolling mill, hot rolling system, rolling method and rolling mill revamping method Expired - Fee Related CN1038483C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP6600791 1991-03-29
JP066007/91 1991-03-29
JP4020956A JP3060691B2 (en) 1991-03-29 1992-02-06 Rolling mill, hot rolling equipment, rolling method, and remodeling method of rolling mill
JP020956/92 1992-02-06

Publications (2)

Publication Number Publication Date
CN1065417A true CN1065417A (en) 1992-10-21
CN1038483C CN1038483C (en) 1998-05-27

Family

ID=26357953

Family Applications (1)

Application Number Title Priority Date Filing Date
CN92102146A Expired - Fee Related CN1038483C (en) 1991-03-29 1992-03-28 Rolling mill, hot rolling system, rolling method and rolling mill revamping method

Country Status (6)

Country Link
EP (1) EP0506138B1 (en)
JP (1) JP3060691B2 (en)
KR (1) KR100222444B1 (en)
CN (1) CN1038483C (en)
BR (1) BR9201082A (en)
DE (1) DE69224490T2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1898038B (en) * 2003-12-23 2011-03-09 Sms西马格股份公司 Method for lubricating milling material
CN109108092A (en) * 2018-10-12 2019-01-01 重集团大连工程技术有限公司 A kind of work roll bending and traverse displacement unit

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5768927A (en) * 1991-03-29 1998-06-23 Hitachi Ltd. Rolling mill, hot rolling system, rolling method and rolling mill revamping method
US5666837A (en) * 1991-03-29 1997-09-16 Hitachi Ltd. Rolling mill and method of using the same
US5524465A (en) * 1991-03-29 1996-06-11 Hitachi, Ltd. Work rolls crossing type mill, rolling system and rolling method
JP2807379B2 (en) * 1992-02-14 1998-10-08 株式会社日立製作所 Tandem rolling mill and work roll cross mill
KR100254076B1 (en) * 1992-10-02 2000-04-15 가나이 쓰도무 Work rolls crossing type mill,rolling equipment and rolling method
DE69312223T2 (en) * 1992-11-10 1998-02-19 Mitsubishi Heavy Ind Ltd Process for the gloss processing of sheet metal surfaces and process for the cold rolling of metallic materials
DE4447382C2 (en) * 1994-12-22 1999-08-12 Mannesmann Ag Roll stand for rolling sheets and strips
US5655398A (en) * 1995-05-11 1997-08-12 Danieli United, A Division Of Danieli Corporation Roll crossing and shifting system
IT1280192B1 (en) * 1995-06-26 1998-01-05 Danieli Off Mecc AXIAL TRANSLATION DEVICE FOR ROLLING CYLINDERS AND AXIAL TRANSLATION PROCEDURE WITH CROSSING DISPLACEMENT OF THE
JP3215327B2 (en) * 1995-07-10 2001-10-02 川崎製鉄株式会社 Continuous hot finish rolling method for steel strip
US6286354B1 (en) * 1996-04-03 2001-09-11 Hitachi, Ltd. Rolling mill and rolling method and rolling equipment
TW358758B (en) * 1996-12-27 1999-05-21 Hitachi Ltd Rolling mill and method of the same
DE19911638A1 (en) * 1999-03-16 2000-09-21 Sms Demag Ag Device for controllably influencing the frictional forces between the guide surfaces and contact surfaces of bearing chocks of the rollers guided in the stator windows of roll stands
JP5929048B2 (en) * 2011-09-01 2016-06-01 Ｊｆｅスチール株式会社 Hot rolling method
PL234616B1 (en) * 2018-04-09 2020-03-31 Lubelska Polt Device for shredding of the structure with the rotary guides
JP7342831B2 (en) * 2020-09-29 2023-09-12 Ｊｆｅスチール株式会社 Hot rolling mill and hot rolled steel sheet manufacturing method
CN112496033B (en) * 2020-11-10 2022-08-19 江阴市诚立新材料科技有限公司 Hot rolling equipment and hot rolling method for hot-rolled galvanized plate
EP4094857A1 (en) 2021-05-28 2022-11-30 Primetals Technologies Austria GmbH Stabilization of the working and supporting rolls of a roll stand during hot rolling of a rolling stock into a strip in the roll stand
CN115415331B (en) * 2022-10-10 2024-06-14 日照钢铁控股集团有限公司 Hot continuous rolling machine frame outlet strip steel convexity distribution method, system and computing terminal

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208253A (en) * 1963-05-10 1965-09-28 United States Steel Corp Control of rolling mill lubricant
JPS5217515B2 (en) * 1972-03-23 1977-05-16
JPS57137011A (en) * 1981-02-16 1982-08-24 Nippon Kokan Kk <Nkk> Processing method of mill roll
JPS57199501A (en) * 1981-06-02 1982-12-07 Kawasaki Steel Corp Hot oil-lubricated rolling method
JPS5939408A (en) * 1982-08-25 1984-03-03 Nippon Steel Corp Method for preventing thrust in rolling mill
FR2572961A1 (en) * 1984-11-09 1986-05-16 Usinor CAGE OF PERFECTED LAMINOIR
JPS61279305A (en) * 1985-06-06 1986-12-10 Ishikawajima Harima Heavy Ind Co Ltd Rolling mill
JPH0753284B2 (en) * 1985-12-05 1995-06-07 石川島播磨重工業株式会社 Hot rolling equipment
US4735116A (en) * 1986-05-06 1988-04-05 United Engineering Rolling Mills, Inc. Spreading rolling mill and associated method
JPH0618646B2 (en) * 1986-05-12 1994-03-16 三菱重工業株式会社 Roll cross type rolling mill
JP2616917B2 (en) * 1987-01-24 1997-06-04 株式会社日立製作所 Rolling method by roll shift rolling mill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1898038B (en) * 2003-12-23 2011-03-09 Sms西马格股份公司 Method for lubricating milling material
CN109108092A (en) * 2018-10-12 2019-01-01 重集团大连工程技术有限公司 A kind of work roll bending and traverse displacement unit
CN109108092B (en) * 2018-10-12 2024-03-15 一重集团大连工程技术有限公司 Work roll bending and traversing device

Also Published As

Publication number Publication date
DE69224490T2 (en) 1998-09-24
BR9201082A (en) 1992-11-24
CN1038483C (en) 1998-05-27
DE69224490D1 (en) 1998-04-02
JPH0550110A (en) 1993-03-02
EP0506138B1 (en) 1998-02-25
KR920017732A (en) 1992-10-21
JP3060691B2 (en) 2000-07-10
KR100222444B1 (en) 1999-10-01
EP0506138A1 (en) 1992-09-30

Similar Documents

Publication Publication Date Title
CN1038483C (en) Rolling mill, hot rolling system, rolling method and rolling mill revamping method
CN1047110C (en) Hot strip rolling plant and method directly combined with continuous casting
CN109468634B (en) Process method for recovering precision of rolling mill step pad by laser cladding technology
RU2078625C1 (en) Method and apparatus for producing hot rolled steel strip
CN1340387A (en) Cold-rolling mill and its rolling method
CN1780702A (en) Method for changing the configuration of a rolling mill and advanced rolling mill for carrying out said method
CN1042204C (en) Back-mounted multi-frame continuous-rolling for band cast machine
CN107042236A (en) The preparation method of very thin austenic stainless steel belt with glossy surface
CN109332377A (en) 301 accurate band steel production technologies of cylinder liner
US6076388A (en) Rolling mill, hot rolling system, rolling method and rolling mill revamping method
CN1262363C (en) Roll stand for producing plane roll strips having a desired strip profile superelevation
CN1095703C (en) Rolling mill drive apparatus, rolling mill and rolling method
CN101549354B (en) Six-roller mill
CN106350646B (en) The method of the nonstandard accurate constant force clockwork spring stainless steel band of 4-roller cold rolling mill manufacture
Grydin et al. Experimental twin-roll casting equipment for production of thin strips
CN1275711C (en) Hot rooling mill and method
EP2012944B1 (en) Rolling plant
Iwadoh et al. Effect of work roll materials and progress of manufacturing technology on cold rolling and future developments in Japan
CN1151003C (en) Rolling installation for flat products
KR101356868B1 (en) Continous manufacturing device of ferritic stainless steel and continuous manufacturing method of using the same
JPS636282B2 (en)
CN1396010A (en) Rolling mill, rolling equipment and rolling method
KR100799506B1 (en) Top back up roll chock, bottom back up roll chock, and rolling mill
JP3097685B2 (en) Rolling mill, hot rolling equipment, rolling method, and remodeling method of rolling mill
YARITA Problems of friction, lubrication, and materials for rolls in the rolling technology

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
OR01 Other related matters
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 19980527

Termination date: 20100328