CN114130817A - Integral construction method of experimental rolling mill suitable for ultra-precise ultrathin strip rolling process - Google Patents
Integral construction method of experimental rolling mill suitable for ultra-precise ultrathin strip rolling process Download PDFInfo
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- 238000005096 rolling process Methods 0.000 title claims abstract description 204
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 60
- 239000000110 cooling liquid Substances 0.000 claims description 56
- 238000002347 injection Methods 0.000 claims description 42
- 239000007924 injection Substances 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 40
- 230000008569 process Effects 0.000 claims description 38
- 239000007921 spray Substances 0.000 claims description 35
- 238000005507 spraying Methods 0.000 claims description 17
- 238000005461 lubrication Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000010731 rolling oil Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
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- 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
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- 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
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
- B21B27/032—Rolls for sheets or strips
-
- 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
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
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Abstract
The invention provides an integral construction method of an experimental rolling mill suitable for an ultra-precise extremely-thin strip rolling process, which comprises the following steps: prefabricating all modules required by an experimental rolling mill; assembling all modules in a manufacturing plant to form an experimental rolling mill; inspecting and testing the experimental rolling mill, selecting a qualified experimental rolling mill and sending the qualified experimental rolling mill to a user site; the system comprises a test rolling mill, a main transmission device, a rolling mill base, a rolling mill protection cover, a rolling mill pipeline, a rolling mill base, a civil engineering foundation and a construction foundation. A plurality of core parts of the experimental rolling mill are connected into a whole through the rolling mill base and then connected with the civil engineering foundation, and the integral construction method not only provides high enough installation precision for rolling the ultra-precise ultra-thin strip, but also greatly improves the construction efficiency.
Description
Technical Field
The invention belongs to the field of strip rolling, and particularly relates to an integral construction method of an experimental rolling mill suitable for an ultra-precise extremely-thin strip rolling process.
Background
With the wide application of the strip in the fields of national defense, military industry, household appliances and microelectronics, especially the popularization of high-tech electronic products such as curved screens and the like, the final users of the products require that the strip has the severe requirements of extremely thin thickness, extremely high strength and extremely good plate shape. At present, the demand of ultra-precise extremely-thin strips (high-precision and high-stability strips with the thickness less than 0.1 mm) is extremely large in China, but most products depend on import. The traditional rolling process and equipment thereof are used for producing medium and low-end strips, but cannot meet the requirements of the rolling process of ultra-precise ultra-thin strips, and the following serious problems are exposed in actual production and application:
(1) the rigidity of the equipment is low
When a large rolling force is applied to a strip to be processed, the traditional rolling equipment generates large deformation due to the influence of strip reaction force, and particularly when the strip with extremely thin thickness is processed, the deformation of the equipment is even larger than the thickness of the strip, so that the thickness fluctuation of a product is too large, and the strip meeting the thickness requirement cannot be rolled.
(2) Poor mounting precision
The key parts of the traditional metallurgical equipment respectively take roots on the civil engineering foundation, so that different single occasions of the metallurgical equipment cause poor installation precision due to uneven settlement of the civil engineering foundation, and the requirement of the rolling process of the ultra-precise ultra-thin strip cannot be met.
(3) The construction efficiency is low
The traditional metallurgical equipment construction method is that the equipment needs to be disassembled before being delivered from a manufacturing plant, secondary final assembly is carried out after the equipment enters a construction site, and the equipment precision is poor and the workload is greatly increased due to the release of internal stress caused by repeated disassembly and assembly of the metallurgical equipment.
Disclosure of Invention
The invention aims to provide an integral construction method of an experimental rolling mill suitable for an ultra-precise ultra-thin strip rolling process, so as to overcome the technical defects.
In order to solve the technical problems, the invention provides an integral construction method of an experimental rolling mill suitable for an ultra-precise extremely-thin strip rolling process, which comprises the following steps:
prefabricating all modules required by an experimental rolling mill;
assembling all modules in a manufacturing plant to form an experimental rolling mill;
inspecting and testing the experimental rolling mill, selecting a qualified experimental rolling mill and sending the qualified experimental rolling mill to a user site;
the system comprises a test rolling mill, a main transmission device, a rolling mill base, a rolling mill protection cover, a rolling mill pipeline, a rolling mill base, a civil engineering foundation and a construction foundation.
Furthermore, the rolling mill comprises a closed forged steel integral housing window made of 42CrMo, a tower-shaped roller system is arranged in the housing window, and a main transmission device is arranged on the transmission side of the tower-shaped roller system;
at the manufacturing plant, mill piping is arranged along the mill at the drive side edge of the mill base.
Preferably, the rolling mill piping comprises a rack type hydraulic cylinder, an oil inlet and an oil return port of the rack type hydraulic cylinder are respectively connected to the high-pressure valve station through a macro hydraulic pipeline, and the length of the macro hydraulic pipeline is within 500 mm.
Further, the tower-shaped roller system is a twenty-roller system formed by tangentially arranging two working rollers, four middle driving rollers, two middle idler rollers and eight backing rollers according to a tower shape;
wherein the diameter of the working roll is 15mm-17mm, and the width of the roll surface is 280 mm.
Furthermore, the rolling mill also comprises a screw-down device, a rolling line adjusting device, a convexity adjusting device, a roll diameter compensating device, a transverse moving device, a process lubricating and spraying device and a suspension device;
the rolling line adjusting device is arranged at the bottom of the rolling mill, the roll diameter compensating device is arranged at the inlet side and the outlet side of the rolling mill, the transverse moving device is arranged at the operation end of the rolling mill and used for changing the axial opposite positions of the working roll and an intermediate roll, the two process lubrication injection devices are symmetrically arranged about the axial center line of the rolling mill, and the suspension device is used for suspending the intermediate roll, the two intermediate driving rolls and the two intermediate idler rolls.
Preferably, the process lubrication injection device comprises a guide plate frame arranged on a mill housing, and further comprises two guide rollers arranged on the guide plate frame, the axial center lines of the two guide rollers are parallel to each other, the planes of the two axial center lines are perpendicular to the plane of a strip passing through a gap between the two guide rollers, a drainage plate is arranged on a roller body of each guide roller, channels for cooling liquid to flow through are arranged in the roller body of each guide roller and a plate body of each drainage plate, and the cooling liquid in the guide rollers flows out along the channels of the drainage plates and is injected to the contact part of the working roller and a middle roller and the contact part of the strip and the working roller;
the guide rollers are hollow rollers, one end opening of each hollow roller is closed, the other end opening of each hollow roller is used as a liquid inlet, N flow guide holes are uniformly arranged on the wall of the hollow cavity of each hollow roller along the axial center line at intervals, the axial center lines of all the flow guide holes are parallel to each other, and the flow guide holes are communicated with the channels of the flow guide plates.
Furthermore, the two drainage plates are symmetrically arranged up and down relative to the plane of the strip, wherein the lower plate surface of the drainage plate positioned above the strip is tangent to the guide roller positioned above the strip, N liquid supply channels are arranged in the plate body of the drainage plate, each liquid supply channel is correspondingly communicated with each flow guide hole, and the inner diameter of each liquid supply channel is gradually reduced along the direction of the medium flow;
and along the medium flow direction, the tail end of the liquid supply channel is a wedge-shaped spray hole, the cooling liquid sprayed out of the wedge-shaped spray hole is over against the contact part of the strip and the two working rolls, and the cooling liquid sprayed out of all the wedge-shaped spray holes covers the width of the strip.
Preferably, the diversion hole extends horizontally to form a diversion channel which can be inserted into the drainage plate, the diversion channel is communicated with the liquid supply channel, along the medium flow direction, cooling liquid enters the guide roller from the liquid inlet, and then flows through the diversion hole, the diversion channel and the liquid supply channel in sequence and then is sprayed out from the wedge-shaped spray hole.
Preferably, the liquid supply channel is in the shape of an open groove along the axial direction, the groove is formed in the plate surface of the drainage plate, a pressing plate covers the surface of the drainage plate, the pressing plate is tightly attached to the surface of the drainage plate in a sealing mode and completely covers the open groove of the liquid supply channel, fan-shaped spray holes are formed in the tail end, corresponding to the liquid supply channels, of the pressing plate, and cooling liquid sprayed out of the fan-shaped spray holes is opposite to the contact position of the adjacent rollers.
Furthermore, the liquid supply channels are arranged inside the plate body of the drainage plate, the cavity wall of each liquid supply channel is provided with a fan-shaped spray hole, and cooling liquid sprayed out from the fan-shaped spray holes is over against the contact position of the adjacent rollers;
the guide rollers are parallel to the working rollers, the same end of the two rollers is a transmission side, the other same end of the two rollers is an operation side, the end part of the guide roller, which is positioned on the transmission side, is inserted into the guide plate frame, the end part of the guide roller, which is positioned on the operation side, is inserted into the support plate, the support plate is arranged on the guide plate frame, and the two guide rollers can rotate around the axis of the two guide rollers;
the guide roll is fixedly connected with the drainage plate or integrally formed, the drainage plate and the pressing plate are connected through a plurality of groups of rivets, each group of rivets is arranged at equal intervals with each liquid supply channel, and the number and the interval of each group of rivets are the same.
The invention has the following beneficial effects:
(1) the experimental rolling mill adopts rolling oil as a medium to ensure the surface quality of a strip material when the ultra-precise ultra-thin strip is rolled, and a plurality of core parts of the experimental rolling mill are connected into a whole through a rolling mill base and then are connected with a civil engineering foundation.
(2) The small-roll-diameter narrow-width working roll, the 20-roll tower-shaped arrangement roll system and the closed forged steel integral housing workshop adopted by the experimental rolling mill provide enough equipment rigidity for rolling the ultra-precise ultra-thin strip; the micro-distance hydraulic pipelines of the high-pressure valve station arranged on the rolling mill shield and the platform and between the high-pressure valve station and the corresponding hydraulic cylinders can provide enough short response time and enough high control precision for the rolling process of the ultra-precise ultra-thin strip.
(3) The shell-shaped arrangement of the process lubrication injection device solves the problem of arrangement of a cooling liquid injection system in a narrow space, greatly reduces the injection distance, greatly improves the injection pressure of cooling liquid through multiple pressurization, and thoroughly solves numerous problems of the conventional cooling liquid injection system due to the small injection distance and the large injection pressure.
In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of an experimental rolling mill suitable for an ultra-precise ultra-thin strip rolling process.
Fig. 2 is a side view of the experimental mill.
FIG. 3 is a schematic cross-sectional view of an experimental rolling mill.
Fig. 4 is a schematic structural view of the rolling mill piping G.
FIG. 5 is a schematic diagram of a tower roll system.
FIG. 6 is a schematic sectional view of a first process lubrication injection apparatus (liquid supply channel is opened on the plate surface of the flow guide plate).
FIG. 7 is a schematic sectional view of the second process lubrication injection apparatus (the liquid supply channel is opened inside the flow guide plate).
FIG. 8 is a schematic diagram of the construction of the process lubrication injection apparatus with the pressure plate removed.
FIG. 9 is a schematic diagram of the structure of a process lubrication injection apparatus having a platen.
Description of reference numerals:
A. a rolling mill;
B. a left process platform;
C. a mill base;
D. a right process platform;
E. a mill housing;
F. a main transmission device;
G. piping a rolling mill;
101. a memorial archway; 102. a tower-shaped roll system; 103. a pressing device; 104. a rolling line adjusting device; 105. a convexity adjusting device; 106. a roll diameter compensation device; 107. a traversing device; 108. a process lubrication injection device; 109. a suspension device; 110. a tailgate; 111. a front door; 112. a fixing mechanism;
201. a rack-type hydraulic cylinder; 202. a macro hydraulic line; 203. a high pressure valve station;
a. a work roll; b. an intermediate roller; c. two intermediate driving rollers; d. two intermediate idler rollers; e. a backing roll;
1. a guide plate frame;
2. a strip of material;
3. a drainage plate; 301. a liquid supply channel; 302. a wedge-shaped injection hole;
4. a guide roller; 401. a flow guide hole; 402. a flow guide channel;
5. a fan-shaped injection hole;
6. a support plate;
7. riveting;
8. and (7) pressing a plate.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the present invention, the upper, lower, left and right in the drawings are regarded as the upper, lower, left and right of the overall construction method of the experimental rolling mill applied to the ultra-precise ultra-thin strip rolling process described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The first embodiment:
the embodiment relates to an integral construction method of an experimental rolling mill suitable for an ultra-precise extremely-thin strip rolling process, which comprises the following steps:
prefabricating all modules required by an experimental rolling mill;
assembling all modules in a manufacturing plant to form an experimental rolling mill;
inspecting and testing the experimental rolling mill, selecting a qualified experimental rolling mill and sending the qualified experimental rolling mill to a user site;
as shown in fig. 1, all modules constituting the experimental rolling mill at least include a rolling mill a, a left process platform B, a rolling mill base C, a right process platform D, a rolling mill shield E, a main transmission device F and a rolling mill piping G, the two process platforms are symmetrically arranged with respect to the rolling mill a and are both fixed to the rolling mill base C, and the rolling mill base C is installed on a civil engineering foundation.
Referring to fig. 1, the mill guard E serves to protect components on the mill base C and, in addition, serves as a platform.
Because the rolling mill base C is connected with the rolling mill base C, the position precision among the rolling mill A, the left process platform B and the right process platform D cannot be gradually deteriorated due to the uneven settlement of the civil engineering foundation, which is very important for the rolling of ultra-precise ultra-thin strips, and otherwise, accidents such as strip breakage and the like are easily caused.
The left process platform B and the right process platform D are composed of a steering roller, a thickness measuring device, a tension measuring device and an oil removing device, the left process platform B and the right process platform D are mainly used for providing necessary auxiliary conditions such as thickness closed-loop control, tension monitoring and stabilization, strip surface rolling oil removal and the like for the rolling of ultra-precise ultra-thin strips, and the structures of the process platforms belong to conventional structures in the field and are not described in detail.
The integral construction method of the experimental rolling mill suitable for the ultra-precise ultrathin strip rolling process comprises the following specific steps:
(1) the experimental rolling mill is composed of seven module modules in total, wherein the seven module modules are a rolling mill A, a left process platform B, a rolling mill base C, a right process platform D, a rolling mill shield E, a main transmission device F and a rolling mill tubing G, and the seven module modules are assembled in a manufacturing plant; (2) in order to meet the special rolling requirement of the ultra-precise ultra-thin strip, the overall size of the experimental rolling mill is 2500mm (length) X2200mm (width) X2000mm (height), which is not only beneficial to improving the rigidity and the rolling precision of equipment, but also can fully meet the experimental application and reduce the user cost; (3) the pipe G of the rolling mill is immediately sealed after the pipeline is flushed in a manufacturing plant, so that the damage of severe conditions of a construction site to hydraulic components can be effectively reduced, and the construction period is greatly shortened; (4) the rolling mill piping G is arranged to the transmission side edge of the rolling mill base C at the manufacturing plant, i.e., along the rolling mill a and the rolling mill base C, and the position is only about 100mm from the position of the hydraulic pipe trench at the construction site, which greatly reduces the amount of work for on-site intermediate piping.
After the experimental rolling mill and seven modules thereof are assembled, inspected and tested in a manufacturing plant, the experimental rolling mill and the seven modules are directly loaded and delivered to a user site without disassembly. Therefore, the inner stress release of the experimental rolling mill in the disassembling and field reassembling processes can be prevented from reducing the precision of rolling equipment, and the whole construction method of the experimental rolling mill can reduce the equipment construction amount and prevent the influence of uneven settlement of civil engineering on the installation precision. Because the users of the experimental rolling mill are colleges and universities or scientific research institutions, and the construction and maintenance capabilities of the users are weak, the overall construction method of the experimental rolling mill can greatly reduce the operation and maintenance difficulty of the users and provide high enough installation accuracy for rolling the ultra-precise ultra-thin strip.
As shown in fig. 2, the rolling mill a includes a closed forged steel integral housing 101 made of 42CrMo (42 chromium molybdenum), a tower-shaped roller system 102 (see fig. 5) is arranged in the housing 101, a main transmission device F is installed on a transmission side of the tower-shaped roller system 102, as shown in fig. 1, the main transmission device F drives four two intermediate transmission rollers c to realize large torque transmission to a working roller a and further complete rolling of an ultra-precise ultra-thin strip, and due to the special requirement of rolling the ultra-precise ultra-thin strip, the diameter of the working roller is set to be 15mm-17mm, but the working roller with the diameter cannot match with a transmission shaft with a corresponding rotation diameter, so that the intermediate roller b with a larger diameter is used for indirect large torque transmission, and the working roller a is not directly driven, so that the jumping of the working roller during high-speed rolling can be effectively prevented, and the rolling precision is improved.
According to the characteristics of small and precise experimental rolling mill, the 42CrMo closed forged steel integral type housing can greatly improve the integral rigidity of equipment, so that the uniform and minimum deformation of the housing along the bandwidth direction can be ensured when an ultra-precise extremely-thin strip is rolled, and the significance for controlling the thickness of the strip is very important.
At the manufacturing plant, mill piping G is arranged along the mill a at the drive side edge of the mill base C to reduce the amount of work on site.
Referring to fig. 4, the rolling mill piping G includes a rack-type hydraulic cylinder 201, an oil inlet and an oil return port of the rack-type hydraulic cylinder 201 are respectively connected to a high-pressure valve station 203 through a macro hydraulic pipeline 202, wherein the length of the macro hydraulic pipeline 202 is within 500mm, and the high-pressure valve station 203 is disposed on a rolling mill shroud E and participates in the general assembly of a manufacturing plant, so that the response time of a control system can be greatly reduced and the response control accuracy can be improved. Because the thickness to be rolled is extremely thin but the product quality requirement and the precision are required, the response time and the control precision are one of the most important core control indexes of the experimental rolling mill, and the traditional method for arranging the high-pressure valve station on the civil engineering foundation outside the operation line obviously cannot meet the requirement. The equipment ground elevation of the rolling mill base C is +/-0, and the experimental rolling mill is generally used in universities or scientific research institutions and is inconvenient to excavate pits in civil engineering, so that the layout is realized.
As shown in fig. 5, the tower-shaped roller system 102 is a twenty-roller system consisting of two working rollers a, four one-intermediate rollers b, four two-intermediate driving rollers c, two-intermediate idle rollers d, and eight backing rollers e arranged tangentially in tower shape, symmetrically along the transverse and vertical centers of the window of the housing 1.
The work rolls a are in direct contact with the strip 2 and perform a thinning action on the strip 2, with a diameter of about 15mm to 17 mm. This is because the contact arc length of the small diameter roll and the strip 2 is shorter for the same strip thickness, and thus the rolling force to be applied to the parts of the experimental rolling mill is smaller, which is very important for the completion of normal rolling. And the small-neck working roll has smaller elastic flattening during rolling, which is very important for the rolling of ultra-precise ultra-thin strip because the minimum rollable thickness of the rolling mill is in inverse proportion to the roll neck of the working roll.
The width of the roll surface of the work roll a was 280mm, which was determined according to the characteristics of the experimental rolling mill. Different from a production rolling mill, the experimental rolling mill can provide higher equipment rigidity under the condition of a narrow roll surface to fully complete experimental simulation under various limit conditions, and further complete the rolling of ultra-precise ultra-thin strips.
Since the diameter of the working roll a is very small, in order to reduce the axial deflection deformation in the rolling process, an arrangement of a middle roll b, two middle driving rolls c, two middle idler rolls d and a backing roll e which are sequentially supported in a tower-shaped manner is adopted, adjacent roll surfaces are tangent, and the tower-shaped roll system 102 is symmetrically distributed about the transverse center and the vertical center of the housing 1 as a whole, and the reference figure 2 shows.
The backing roller e is composed of an eccentric gear and a backing bearing, the outer ring of the backing bearing is tangent to two middle driving rollers c, the eccentric gear is driven by a rack hinged with the rack type hydraulic cylinder 201, the rolling force reaction force applied to the working roller a by the strip material 2 is finally transmitted to the backing roller e through one middle roller b (four), two middle driving rollers c (four) and two middle idle rollers d (two), and the main function of the backing roller e is to transmit the rolling force reaction force to the memorial archways 101 and adjust the overall shape of the tower-shaped roller system 102 through the action of the eccentric gear.
As shown in fig. 2 and fig. 3, the rolling mill a further includes a screw-down device 103, a rolling line adjusting device 104, a crown adjusting device 105, a roll diameter compensating device 106, a traversing device 107, a process lubrication spraying device 108, and a suspension device 109, wherein the screw-down device 103, the rolling line adjusting device 104, the crown adjusting device 105, and the roll diameter compensating device 106 all drive a rack by a rack hydraulic cylinder 201 to drive a corresponding eccentric gear to realize position control of a corresponding backing roll e, and specifically, the specific structure and function of each device are as follows:
the screw-down device 103 is installed on the top of the rolling mill a, and its main function is to change the position of the top two backing rolls e to indirectly realize the lifting of the upper working roll a, and the screw-down device 103 is mainly used for roll gap opening during threading or strip thickness change during rolling, and its structure can be referred to patent application document No. CN 100374221C.
The rolling line adjusting device 104 is installed at the bottom of the rolling mill a, and mainly functions to change the positions of the two backing rolls e at the bottom to indirectly realize the lifting control of the lower working roll a, and to fix the top surface of the lower working roll a at the level of the unit operating line, and the structure of the rolling line adjusting device 104 is prior art and will not be described in detail herein.
The crown adjustment device 105 is located at the top of the rolling mill a and its main function is to change the phase of the axially arranged backing bearings of the top two backing rolls e to effect a change in the roll shape of the backing rolls e, the structure of which can be seen in patent application publication No. CN 202398618U.
The roll diameter compensating device 106 is installed at the inlet side and the outlet side of the rolling mill A, and mainly has the function of changing the positions of the four backing rolls e at the inlet and the outlet and compensating the positions of the worn other rolls, and the structure of the device can be seen in the patent application document CN 201086091Y.
The traverse device 107 is installed at the operation end of the rolling mill a to change the axial relative position of the working roll a and an intermediate roll b, and by adjusting the axial relative position, the traverse device 107 can ensure good strip shape of the ultra-thin strip of different strips during rolling to avoid the occurrence of middle waves or edge waves, and the structure of the traverse device can be referred to the patent application document CN 202155371U.
The suspending device 109 suspends the intermediate roll b, the intermediate driving roll c and the intermediate idler roll d, and the structure of the suspending device 109 can be referred to in the patent application document of CN101007319A, see fig. 2, specifically, the suspending device 109 suspends the end portions of the intermediate roll b, the intermediate driving roll c and the intermediate idler roll d through spring mechanisms, the fixing mechanism 112 presses the backing roll e along the circumferential direction through a wedge mechanism, and the combined action of the suspending device 109 and the fixing mechanism 112 realizes the balance of the self weight of the tower-shaped roll system 102 (except for the working roll a) and the fixing of the position thereof, which provides the necessary premise for the stable rolling of the ultra-precise ultra-thin strip, because the state of the tower-shaped roll system 102 in the rolling process is unstable and is very dangerous, which is very unfavorable for the rolling of the ultra-precise ultra-thin strip.
The rear baffle 110 and the front door 111 axially position the working roll a through respective end bearings, a gap of 1mm is arranged between the bearings and the end surface of the working roll a, the gap can dynamically position the working roll a along the axial direction and can prevent the self bearings from being burnt, and meanwhile, the rear baffle 110 and the front door 111 can effectively prevent rolling oil from splashing.
The process lubrication injection device 108 injects rolling oil between the roll surfaces and/or between the roll surfaces and the strip to take away heat and ensure the surface quality of the strip, because the user has extremely high requirements on the surface quality of the ultra-precise ultra-thin strip, which cannot be met by the conventional emulsion spraying, and the process lubrication injection device a can dynamically adjust the injection amount of the rolling oil along the axial direction according to the thermal deformation of the roll surfaces.
According to the structural shape, the process lubrication injection device 108 can also be called as a shell-like cooling liquid injection system, and comprises a guide plate frame 1 installed in a mill housing, as shown in fig. 8, and two guide rollers 4 erected on the guide plate frame 1, wherein the axial center lines of the two guide rollers 4 are parallel to each other, the plane of the two axial center lines is perpendicular to the plane of a strip 2 passing through a gap between the two guide rollers 4, a drainage plate 3 is installed on the roller body of each guide roller 4, channels for cooling liquid to flow through are formed in the roller body of each guide roller 4 and the plate body of each drainage plate 3, and the cooling liquid in the guide rollers 4 flows out along the channels of the drainage plates 3 and is injected to the contact part of the adjacent rollers or the contact part of the strip 2 and the working roller a.
The guide rolls 4 are divided into upper guide rolls and lower guide rolls, and are used for guiding the strip 2 to pass through a gap between the upper guide rolls and the lower guide rolls, namely, the strip 2 firstly enters the guide plate frame 1, then continuously moves forward to pass through the two guide rolls 4 and finally enters between the two working rolls a, and in order to reduce the temperature of the strip 2 coming out of the working rolls a, a scallop-shaped cooling liquid injection system can be arranged at the downstream of the two working rolls a, namely, the two scallop-shaped cooling liquid injection systems are symmetrically arranged about the gap between the two working rolls a.
The guide plate frame 1 is arranged on a mill housing, and the guide plate frame 1 is preferably connected through a dovetail groove in the embodiment, so that the strip 2 cannot deviate from the original position due to strip collision in the strip threading or breaking process.
Referring to fig. 8, the left end face of the guide frame 1 is used as the entrance of the strip 2, which is in a bell mouth shape (gradually reducing from left to right in fig. 8), and the gap between the two guide rolls 4 is preferably 4mm, so that the strip can be smoothly threaded and then rolled even if the raw material is warped or buckled, and especially when the strip is broken, the strip is still kept in the 4mm gap and cannot be wound on the roll.
The operating principle of the shellfish cooling liquid injection system of the present embodiment is as follows:
the strip 2 enters the guide plate frame 1 from the inlet of the left end face of the guide plate frame 1, continues to advance, firstly passes through between the two guide rollers 4, and then passes through between the two flow guide plates 3, as shown in fig. 6 or 7, when the strip 2 is close to the working roller a, the channels of the flow guide plates 3 spray cooling liquid, the cooling liquid sprays to the space between the two working rollers a to reduce the temperature of the strip 2, and/or sprays to the contact part of the adjacent rollers (the working roller a and a middle roller b are shown in fig. 6 or 7), and finally the strip 2 enters the two working rollers a to be extruded.
The shell-shaped cooling liquid spraying system can be applied to any rolling mill, is particularly suitable for twenty-high rolling mills and ultra-precise ultra-thin strip rolling processes, and because the whole system does not adopt a nozzle, huge space required by nozzle installation is greatly saved, and the spraying effect of covering the whole strip surface beyond the nozzle is realized through high-pressure low-distance spraying.
Referring to fig. 6 or 7, the two guide rollers 4 have the same structure and are vertically and symmetrically distributed about the plane of the strip 2, the guide rollers 4 are hollow rollers, one end port of each hollow roller is closed, the other end port of each hollow roller is used as a liquid inlet, N flow guide holes 401 are uniformly arranged on the wall of each hollow chamber of each hollow roller along the axial center line at intervals, the axial center lines of all the flow guide holes 401 are parallel to each other, and the flow guide holes 401 are all communicated with the channels of the flow guide plate 3.
The arrows in fig. 6 and 7 represent the flow direction of the cooling liquid.
The hollow inner diameter of the guide roller 4 is larger than the inner diameter of the guide hole 401, if the hollow inner diameter of the guide roller 4 is 16mm, the inner diameter of the guide hole 401 is 5mm, and the cooling liquid can be pressurized once in the process of flowing from the guide roller 4 with the large diameter (16mm) to the guide hole 401 with the small diameter (5 mm).
In order to ensure that the flow velocity, flow rate and pressure of the cooling liquid entering the upper guide roller and the lower guide roller are equal, the cooling liquid coming out from the total liquid inlet pipe is preferably distributed to the upper guide roller and the lower guide roller in two ways, and similarly, in order to ensure equal flow distribution and cooling spraying effect, all the flow guide holes 401 are preferably arranged at uniform intervals.
As shown in fig. 6, two flow-guiding plates 3 are symmetrically arranged up and down with respect to the plane of the strip 2, wherein the lower plate surface of the flow-guiding plate 3 above the strip 2 is tangent to the guide roller 4 above the strip 2, N liquid supply channels 301 are formed in the plate body of the flow-guiding plate 3, each liquid supply channel 301 is correspondingly communicated with each flow-guiding hole 401, and the inner diameter of each liquid supply channel 301 is gradually reduced along the medium flow direction;
the tail end of the liquid supply channel 301 is provided with a wedge-shaped spray hole 302 along the direction of the medium, the cooling liquid sprayed from the wedge-shaped spray hole 302 is opposite to the contact part of the strip 2 and two working rolls a, and the cooling liquid sprayed from all the wedge-shaped spray holes 302 covers the width of the strip 2.
The wedge-shaped spray holes 302 are used to cool the gap between the strip and the rolls.
The diameter of the liquid supply channel 301 at the initial end is 5mm, the diameter of the tail end is 1mm, the diameters of the initial end and the tail end are gradually reduced, namely the sectional area of the tail end is smaller than that of the initial end, and the cooling liquid is pressurized for the second time in the process of entering the liquid supply channel 301 from the diversion hole 401.
The secondarily pressurized cooling liquid is sprayed to the contact part (the area to be cooled) of the strip 2 and the working roll a at a high speed through the wedge-shaped spraying hole 302, and the cooling liquid is sprayed at a high speed under the action of twice pressurization and quickly covers the full bandwidth due to the fact that the wedge-shaped spraying hole 302 is closer to the area to be cooled.
In order to accurately spray the strip 2 to the area to be cooled, the wedge-shaped spray holes 302 are required to be opposite to the contact part of the strip 2 and the working roll a, as shown in fig. 6 or fig. 7, that is, the connecting line of the upper and lower wedge-shaped spray holes 302 and the area to be cooled forms an acute included angle, which is an optimal setting and can be automatically adjusted according to the roll diameter of the working roll a.
In this embodiment, the liquid supply channel 301 is preferably a duct, and the cross section thereof may be circular, rectangular, or other shapes, without limitation.
Referring to fig. 6 or fig. 7, the flow guide hole 401 extends horizontally to form a flow guide channel 402 that can be inserted into the flow guide plate 3, the flow guide channel 402 is communicated with the liquid supply channel 301, along the medium flow direction, the cooling liquid enters the guide roller 4 from the liquid inlet, and then flows through the flow guide hole 401, the flow guide channel 402 and the liquid supply channel 301 in sequence and is ejected from the wedge-shaped injection hole 302.
The drainage plate 3 has two structures, which will be described in detail below:
the structure I is as follows: referring to fig. 6 and 9, the liquid supply channel 301 is in the form of a groove that is open along the axial direction, the groove is opened on the plate surface of the flow guide plate 3, the surface of the flow guide plate 3 is covered with a pressure plate 8, the pressure plate 8 is tightly sealed on the surface of the flow guide plate 3 and fully covers the open groove of the liquid supply channel 301, fan-shaped injection holes 5 are opened at the tail end of the pressure plate 8 corresponding to each liquid supply channel 301, the cooling liquid injected from the fan-shaped injection holes 5 directly faces the contact position of the adjacent rollers, and in addition, the wedge-shaped injection holes 302 shown in fig. 6 are formed on the lower plate surface of the tail end of the pressure plate 8 and the cavity wall of the tail end of the liquid supply channel 301.
In order to avoid vibration caused by spraying cooling liquid and ensure the stability of the system, the drainage plate 3 and the pressure plate 8 are connected through a plurality of groups of rivets 7 in the embodiment, each group of rivets 7 is arranged at equal intervals with each liquid supply channel 301, and the number and the interval of each group of rivets 7 are the same.
The structure II is as follows: referring to fig. 8, the liquid supply channels 301 are arranged inside the plate body of the drainage plate 3, the wall of each liquid supply channel 301 is provided with a fan-shaped injection hole 5, the cooling liquid injected from the fan-shaped injection holes 5 is directly opposite to the contact position of the adjacent roller, that is, the drainage plate 3 is an integral structure, the drainage plate 3 can also be integrally formed with the guide roller 4, and the tail end of each liquid supply channel 301 is a wedge-shaped injection hole 302.
The two structures can be selected according to the needs, namely the split type drainage plate 3 and the pressing plate 8 can be selected, and the integral type drainage plate 3 can also be selected.
In fig. 6 or fig. 7, the cooling liquid sprayed from the fan-shaped spray holes 5 is directly opposite to the contact part of an intermediate roller b and a working roller a, if the thickness of the tail end of the flow guide plate 3 is 1mm, the axial width of the fan-shaped spray holes 5 is 5mm, and an included angle of 70 degrees is formed between the axial width of the fan-shaped spray holes 5 and the width center of the fan-shaped spray holes, and the fan-shaped spray holes 5 are slightly far away from the part to be cooled (the contact part of the intermediate roller b and the working roller a), so that the adoption of the included angle of 70 degrees can be beneficial to spraying the cooling liquid in a fan shape at high pressure and quickly covering the whole bandwidth.
The sectional thickness of the fan-shaped spray holes 5 is 1.5mm and is 30 degrees with the horizontal direction so as to spray the cooling liquid to the contact part of the working roll a and the middle roll b, compared with the wedge-shaped spray holes 302, the fan-shaped spray holes 5 are farther away from the part to be cooled (the contact part of the middle roll b and the working roll a), so that the adopted hole thickness is larger so as to be beneficial to spraying more cooling liquid.
The guide roller 4 is parallel to the working roller a, the same end of the two rollers is a transmission side, the other same end of the two rollers is an operation side, the end part, located on the transmission side, of the guide roller 4 is inserted into the guide plate frame 1, the end part, located on the operation side, of the guide roller 4 is inserted into the support plate 6, the support plate 6 is installed on the guide plate frame 1, and the two guide rollers 4 can rotate around the axis of the two guide rollers 4.
The transmission side of two guide rolls 4 is inserted in guide plate frame 1 to be favorable to the equivalent reposition of redundant personnel of coolant liquid, the operation side of two guide rolls 4 is inserted in bearing plate 6, bearing plate 6 is connected with guide plate frame 1, because two guide rolls 4 all articulate in guide plate frame 1 and bearing plate 6, consequently two guide rolls 4 and its drainage plate 3 can be followed self axis and rotated about 2, this articulated arrangement can realize finely tuning the injection angle of coolant liquid, consequently the injection angle of still accessible adjustment coolant liquid when roll diameter changes and guarantee the cooling effect.
Due to the size limitation of the thickness direction of the shell-shaped layout, the guide roller 4 and the drainage plate 3 can be fixedly connected (such as welded) and can be connected in other modes as long as the cooling liquid is sealed when flowing through the guide roller 4 and the drainage plate 3, the drainage plate 3 and the pressing plate 8 are connected through a plurality of groups of rivets 7, each group of rivets 7 is arranged at equal intervals with each liquid supply channel 301, and the number and the intervals of each group of rivets 7 are the same. This not only makes the drainage plate 3 and the guide roll 4 fully attached to prevent the leakage of the attached surface, but also makes the cooling liquid after the secondary pressurization of the wedge-shaped liquid supply channel 301 rapidly sprayed and covered to the whole belt surface.
If 13 fan-shaped spray holes 5 of the flow guide plate 3 are arranged along the axial direction and the distance between every two adjacent holes is 20mm, the fan-shaped spray holes 5 correspond to the axial positions of the flow guide holes 401, the flow guide channel 402, the liquid supply channel 301 and the wedge-shaped spray holes 302, and therefore rapid and smooth flow distribution of cooling liquid on the same cross section is guaranteed.
The cooling liquid enters the diversion hole 401 from the hollow cavity of the guide roller 4 to complete primary pressurization, the cooling liquid continues to move forwards to enter the liquid supply channel 301 along the diversion hole 401 and the diversion channel 402 to complete secondary pressurization, the cooling liquid after being pressurized twice further moves forwards to be sprayed to the contact area of the strip 2 and the working roller a from the wedge-shaped spray hole 302 in a high-pressure and high-speed state, and meanwhile, the cooling liquid is sprayed to the contact area of the working roller a and the middle roller b from the fan-shaped spray hole 5 in a high-pressure and high-speed state.
The operation principle of the process lubrication injection device 108 provided by the embodiment is as follows:
when the cooling liquid enters the diversion hole 401 from the hollow cavity of the guide roller 4, primary pressurization is completed due to the fact that the drift diameter is reduced, after the cooling liquid enters the liquid supply channel 301 from the diversion hole 401 and the diversion channel 402, secondary pressurization is completed due to the fact that the section size is reduced, the cooling liquid subjected to the secondary pressurization is sprayed to a contact area of the strip 2 and the working roller 5 in a high-pressure and high-speed state through the wedge-shaped spraying hole 302 and/or is sprayed to a contact area of the working roller 5 and an intermediate roller 8 in a high-pressure and high-speed state through the fan-shaped spraying hole 10, the deformation heat generated by the two areas is the most, the linear speed of related parts is higher, and therefore the area which needs the most cooling liquid in the whole system is adopted by the system; with high-speed operation of rolling, the cooling liquid rapidly and indirectly cools other areas in the rolling mill by means of rotation, splashing and the like.
Due to the belled arrangement, the minimum throw distance of the wedge-shaped jet holes 302 and the contact of the strip 2 with the work roll a is 5mm, the jet force of which can reach 70N, and the minimum throw distance of the fan-shaped jet holes 5 and the contact of an intermediate roll b with the work roll a is 7mm, the jet force of which can reach 66N. The combined action of the small spraying distance and the large spraying force is beneficial to timely taking away the deformation heat to realize direct cooling and also beneficial to quickly splashing the cooling liquid to realize indirect cooling, and the deformation heat in the rolling process is always maintained in a reasonable state by the direct cooling and the indirect cooling.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. The integral construction method of the experimental rolling mill suitable for the ultra-precise ultrathin strip rolling process is characterized by comprising the following steps of:
prefabricating all modules required by an experimental rolling mill;
assembling all modules in a manufacturing plant to form an experimental rolling mill;
inspecting and testing the experimental rolling mill, selecting a qualified experimental rolling mill and sending the qualified experimental rolling mill to a user site;
the system comprises a test rolling mill, a rolling mill base, a rolling mill protection cover, a main transmission device, a rolling mill piping and a main transmission device, wherein all modules forming the test rolling mill at least comprise a rolling mill (A), a left process platform (B), a rolling mill base (C), a right process platform (D), a rolling mill protection cover (E), a main transmission device (F) and a rolling mill piping (G), the two process platforms are symmetrically distributed relative to the rolling mill (A) and are fixed on the rolling mill base (C), and the rolling mill base (C) is installed on a civil engineering foundation.
2. The integrated construction method of the experimental rolling mill suitable for the ultra-precise and ultra-thin strip rolling process according to claim 1, wherein the rolling mill (A) comprises a closed forged steel integrated housing (101) made of 42CrMo, a tower-shaped roller system (102) is arranged in the housing (101), and a main transmission device (F) is arranged on the transmission side of the tower-shaped roller system (102);
at the manufacturing plant, a rolling mill piping (G) is arranged along the rolling mill (A) at the drive side edge of the rolling mill base (C).
3. The overall construction method of the experimental rolling mill suitable for the ultra-precise and ultra-thin strip rolling process according to claim 2, wherein the rolling mill piping (G) comprises a rack-type hydraulic cylinder (201), an oil inlet and an oil return port of the rack-type hydraulic cylinder (201) are respectively connected to the high-pressure valve station (203) through a macro hydraulic pipeline (202), and the length of the macro hydraulic pipeline (202) is within 500 mm.
4. The method for integrally constructing a laboratory rolling mill suitable for the ultra-precision ultra-thin strip rolling process according to claim 2 or 3, wherein the tower-shaped roll system (102) is a twenty-roll system formed by two working rolls (a), four-one intermediate rolls (b), four-two intermediate driving rolls (c), two-two intermediate idle rolls (d) and eight backing rolls (e) which are tangentially arranged according to a tower shape;
wherein the diameter of the working roll (a) is 15mm-17mm, and the width of the roll surface is 280 mm.
5. The integrated construction method of the experimental rolling mill suitable for the ultra-precise ultra-thin strip rolling process according to claim 4, wherein the rolling mill (A) further comprises a screw-down device (103), a rolling line adjusting device (104), a crown adjusting device (105), a roll diameter compensating device (106), a traverse device (107), a process lubrication injection device (108), and a suspension device (109);
wherein the screw-down device (103) and the crown adjusting device (105) are both arranged at the top of the rolling mill (A), the rolling line adjusting device (104) is arranged at the bottom of the rolling mill (A), the roll diameter compensating device (106) is arranged at the inlet side and the outlet side of the rolling mill (A), the traversing device (107) is arranged at the operation end of the rolling mill (A) and is used for changing the axial relative position of the working roll (a) and the intermediate roll (b), the two process lubrication injection devices (108) are symmetrically arranged about the axial central line of the rolling mill (A), and the suspension device (109) suspends the intermediate roll (b), the two intermediate driving rolls (c) and the two intermediate idler rolls (d).
6. The whole construction method of the experimental rolling mill suitable for the ultra-precise and ultra-thin strip rolling process as claimed in claim 5, the process lubricating and spraying device is characterized by comprising a guide plate frame (1) arranged on a mill housing, and further comprising two guide rollers (4) erected on the guide plate frame (1), wherein the axial center lines of the two guide rollers (4) are parallel to each other, the plane of the two axial center lines is perpendicular to the plane of a strip (2) passing through a gap between the two guide rollers (4), the roller body of each guide roller (4) is provided with a drainage plate (3), and the roller body of each guide roller (4) and the plate body of each drainage plate (3) are provided with channels for cooling liquid to flow through, wherein the cooling liquid in the guide roll (4) flows out along the channel of the flow guide plate (3) and is sprayed to the contact part of the working roll (a) and an intermediate roll (b) and the contact part of the strip (2) and the working roll (a);
the structure of the two guide rollers (4) is the same, the guide rollers are vertically symmetrically distributed on the plane where the strip (2) is located, the guide rollers (4) are hollow rollers, one end openings of the hollow rollers are closed, the other end openings of the hollow rollers serve as liquid inlets, N flow guide holes (401) are uniformly arranged on the hollow cavity wall of each hollow roller along the axial center line at intervals, the axial center lines of all the flow guide holes (401) are parallel to each other, and the flow guide holes (401) are communicated with the channels of the flow guide plates (3).
7. The overall construction method of the experimental rolling mill suitable for the ultra-precise ultra-thin strip rolling process is characterized in that two flow guide plates (3) are arranged in an up-and-down symmetrical mode about the plane of the strip (2), wherein the lower plate surface of the flow guide plate (3) positioned above the strip (2) is tangent to the guide roller (4) positioned above the strip (2), N liquid supply channels (301) are formed in the plate body of the flow guide plate (3), each liquid supply channel (301) is correspondingly communicated with each flow guide hole (401), and the inner diameter of each liquid supply channel (301) is gradually reduced along the medium flow direction;
the tail end of the liquid supply channel (301) is provided with a wedge-shaped spray hole (302) along the direction of the medium flow, the cooling liquid sprayed from the wedge-shaped spray hole (302) is opposite to the contact part of the strip (2) and the two working rolls (a), and the cooling liquid sprayed from all the wedge-shaped spray holes (302) covers the width of the strip (2).
8. The overall construction method of the experimental rolling mill suitable for the ultra-precise ultra-thin strip rolling process according to claim 7, wherein the flow guide holes (401) extend horizontally to form flow guide channels (402) which can be inserted into the flow guide plates (3), the flow guide channels (402) are communicated with the liquid supply channels (301), along the medium flow direction, cooling liquid enters the guide rollers (4) from the liquid inlet, and then flows through the flow guide holes (401), the flow guide channels (402) and the liquid supply channels (301) in sequence and then is ejected from the wedge-shaped injection holes (302).
9. The integral construction method of the experimental rolling mill suitable for the ultra-precise and ultra-thin strip rolling process according to claim 7, wherein the liquid supply channel (301) is in the shape of a groove which is open along the axial direction, the groove is formed in the plate surface of the drainage plate (3), a pressing plate (8) covers the surface of the drainage plate (3), the pressing plate (8) is tightly attached to the surface of the drainage plate (3) in a sealing mode and completely covers the open groove of the liquid supply channel (301), fan-shaped injection holes (5) are formed in the tail end, corresponding to the liquid supply channels (301), of the pressing plate (8), and cooling liquid sprayed out of the fan-shaped injection holes (5) directly faces the contact position of an adjacent roller.
10. The overall construction method of the experimental rolling mill suitable for the ultra-precise and ultra-thin strip rolling process according to claim 8 or 9, wherein the liquid supply channels (301) are arranged inside the plate body of the drainage plate (3), the cavity wall of each liquid supply channel (301) is provided with a fan-shaped injection hole (5), and the cooling liquid sprayed from the fan-shaped injection holes (5) is over against the contact position of the adjacent rollers;
the guide rollers (4) are parallel to the working rollers (a), the same end of the two rollers is a transmission side, the other same end of the two rollers is an operation side, the end part, located on the transmission side, of each guide roller (4) is inserted into the guide plate frame (1), the end part, located on the operation side, of each guide roller (4) is inserted into the support plate (6), the support plate (6) is installed on the guide plate frame (1), and the two guide rollers (4) can rotate around the axis of the guide rollers;
guide roll (4) and drainage plate (3) rigid coupling or integrated into one piece, drainage plate (3) and clamp plate (8) are connected through a plurality of groups of rivets (7), and every group of rivet (7) and every confession liquid passageway (301) equidistance interval arrangement, and the quantity and the interval of every group of rivet (7) are the same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111401519.7A CN114130817A (en) | 2021-11-19 | 2021-11-19 | Integral construction method of experimental rolling mill suitable for ultra-precise ultrathin strip rolling process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111401519.7A CN114130817A (en) | 2021-11-19 | 2021-11-19 | Integral construction method of experimental rolling mill suitable for ultra-precise ultrathin strip rolling process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909316A (en) * | 2021-11-19 | 2022-01-11 | 中国重型机械研究院股份公司 | Shellfish form coolant liquid injection system |
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| US2776586A (en) * | 1948-06-10 | 1957-01-08 | Armzen Company | Construction and control of cold rolling mills |
| US20070125144A1 (en) * | 2005-12-02 | 2007-06-07 | Hiroyuki Ootsuka | Rolling mill |
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