CN103639199A - Magnesium alloy hot rolling apparatus - Google Patents

Magnesium alloy hot rolling apparatus Download PDF

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Publication number
CN103639199A
CN103639199A CN201310655630.8A CN201310655630A CN103639199A CN 103639199 A CN103639199 A CN 103639199A CN 201310655630 A CN201310655630 A CN 201310655630A CN 103639199 A CN103639199 A CN 103639199A
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CN
China
Prior art keywords
magnesium alloy
milling train
roll
mentioned
hot
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Pending
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CN201310655630.8A
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Chinese (zh)
Inventor
田添信广
本城恒
松村英夫
箭内胜彦
箭内良行
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IHI Corp
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IHI Corp
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Application filed by IHI Corp filed Critical IHI Corp
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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
    • B21B1/30—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 non-continuous process
    • B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the material
    • 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
    • B21B27/08—Lubricating, cooling or heating rolls internally
    • B21B2027/086—Lubricating, cooling or heating rolls internally heating internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006—Pinch roll sets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

A magnesium alloy hot rolling apparatus (100) provided with a winder (1, 2) disposed at both the entry end and the exit end of a rolling mill (3) which is capable of heating and maintaining the temperature of each of a magnesium alloy plate (S) in a wound state, and the thickness of the magnesium alloy plate (S) is reduced sequentially by a plurality of reverse rolling, wherein the rolling mill (3) is also provided with work rolls (3a) and back-rolls (3b) which are capable of heating and maintaining their surface temperature to a specified temperature. According to the present invention, deterioration of a quality of an end product due to change of temperature during a hot rolling process of the magnesium alloy can be prevented so as to improve the yield of the end product.

Description

Magnesium alloy hot-rolling mill
Technical field
The present invention relates to a kind of magnesium alloy hot-rolling mill.
The application requires on October 16th, 2007 in the priority of No. 2007-269057 application of Patent of Japan's proposition, at this, quotes its content.
Background technology
In order to manufacture magnesium alloy plate, it is the slab below 10mm that the blank that is for example the pole shape of 300～400mm, the length scope that is 500～600mm by hot extrusion by diameter is configured as for example thickness, above-mentioned slab is cut into specific length (for example 3m) as cutting plate material, and by roughing, above-mentioned cutting plate material to be rolled down to thickness be about 1mm.
And the magnesium alloy coiled material that is about 1mm to above-mentioned thickness by finish rolling carries out further rolling, the coil method or the thickness that produce thickness and be the scope of 0.2～0.5mm are the coiled materials of 50 μ m following (for example 30～40 μ m).
Because being rolled at normal temperatures, magnesium alloy not only needs large pressure but also easily fracture, so preferably carry out hot rolling.
As the existing example that magnesium alloy is carried out to the device of hot rolling, be disclosed in Fig. 1 of patent documentation 1 or Fig. 1 of patent documentation 2.
In these patent documentations, disclosed hot-rolling arrangement possesses the milling train that magnesium alloy is come and gone to rolling, with two heating furnaces that are configured in upstream one side and downstream one side of above-mentioned milling train, by above-mentioned heating furnace, magnesium alloy is heated to the temperature of regulation, and is rolled by milling train.
Patent documentation 1: No. 3521863 communique of Japan Patent
Patent documentation 2: No. 3821074 communique of Japan Patent
But, in above-mentioned patent documentation 1 and the disclosed hot-rolling arrangement of patent documentation 2, because the reeling end of coiled material leading section and the tailing portion of rear end can not heat and stably rolling, so can not become coil method.In addition, exist yield rate low, can not increase the shortcomings such as output.
Summary of the invention
The present invention proposes in view of the above problems, and its object is to provide a kind of magnesium alloy hot-rolling mill, can prevent from reducing because of the quality of the caused product of temperature change in magnesium alloy hot rolling, improves yield rate, increases output.
In order to address the above problem, the present invention has adopted following device.
Magnesium alloy hot-rolling mill as the 1st technical scheme of the present invention, entrance side and outlet side two ends at milling train are provided with the coiling machine that can the magnesium alloy plate of each coiled material state be heated and is incubated, by repeatedly oppositely rolling successively above-mentioned magnesium alloy plate is carried out to thickness and depresses, milling train possesses working roll and the back up roll that surface temperature can heat and be warmed up to certain uniform temperature.
Magnesium alloy hot-rolling mill as the 2nd technical scheme of the present invention is in the related magnesium alloy hot-rolling mill of technique scheme 1, and milling train can be that the progression that the diameter roll that can heat and heat up also can be set switches milling train.
Magnesium alloy hot-rolling mill as the 3rd technical scheme of the present invention is in the related magnesium alloy hot-rolling mill of technique scheme 1, also can be between each of milling train and a pair of takers-in, dispose assembled multipair can heat and heat up the pinch roll of up-down rollers, carry out the stable conveyance of magnesium alloy coiled material, between pinch roll, be provided with tension-adjusting gear.
According to the present invention, owing to being configured to working roll and the back up roll of milling train, can magnesium alloy plate being heated and be heated up, so can prevent that the quality of the product that produces because of the temperature change in magnesium alloy plate hot rolling from reducing.In addition, can improve yield rate, increase output, guarantee well the quality of sheet material or foil.
Accompanying drawing explanation
Fig. 1 means the schematic diagram of general configuration of the hot-rolling arrangement of one embodiment of the present invention.
Fig. 2 means the schematic diagram of protecting the general configuration that adds hot coiler in above-mentioned embodiment.
Fig. 3 A means the accompanying drawing of the setting change of milling train in above-mentioned embodiment.
Fig. 3 B means the accompanying drawing of the setting change of milling train in above-mentioned embodiment.
Fig. 4 A means the accompanying drawing of the example of other progression of milling train in above-mentioned embodiment.
Fig. 4 B means the accompanying drawing of the example of other progression of milling train in above-mentioned embodiment.
Fig. 5 means the accompanying drawing of the general configuration of tension-adjusting gear in above-mentioned embodiment.
Description of reference numerals:
100: hot-rolling arrangement (magnesium alloy hot-rolling mill)
Within 1: the 1, protect and add hot coiler (coiling machine)
Within 2: the 2, protect and add hot coiler (coiling machine)
1a, 2a: reeling end
1b, 2b: protect heating furnace
3: milling train (progression switching milling train)
3a: working roll
3b: back up roll
4: pinch roll
5: tension-adjusting gear
S: magnesium alloy plate
The specific embodiment
Below, with reference to accompanying drawing, one embodiment of the present invention is described.
Fig. 1 means the front view of the structure of the hot-rolling arrangement 100 in present embodiment.
As shown in Figure 1, the hot-rolling arrangement 100(magnesium alloy hot-rolling mill that present embodiment is related) possess the 1st protect add hot coiler 1(coiling machine), the 2nd protect add hot coiler 2(coiling machine), milling train 3, a plurality of paired pinch rolls 4, and tension-adjusting gear 5.
Fig. 2 means that the 1st guarantor adds hot coiler 1 and the 2nd and protects the schematic diagram of the general configuration that adds hot coiler 2.
Described two guarantors add hot coiler 1,2 to be possessed reeling end 1a, 2a and protects heating furnace 1b, 2b. Protect heating furnace 1b, 2b and be built-in with heater H.
This guarantor adds entrance side and the outlet side two ends that hot coiler 1,2 is arranged on milling train 3, and can the magnesium alloy plate of each coiled material state be heated and is incubated, by reeling end 1a, 2a, the both ends on magnesium alloy plate S length direction are coiled into coiled material shape/freely reel to debatching, by heater H, will in guarantor's heating furnace 1b, 2b, be heated to set point of temperature (the 1st temperature) and be incubated simultaneously, will coil into the magnesium alloy plate S(magnesium alloy coiled material of coiled material shape) maintain set point of temperature.
Above-mentioned the 1st temperature is for example the scope of 100～350 ℃, preferably 200～250 ℃.
Get back to Fig. 1 and proceed explanation.
Milling train 3(milling train, progression switch milling train) be configured in above-mentioned a pair of guarantor and add between hot coiler 1,2, there is a pair of working roll 3a opposed and that can heat and heat up that walks abreast, respectively with above-mentioned working roll 3a parallel opposed a pair of back up roll 3b that can heat and heat up, support and take in the housing 3c that this two pair roller 3a, 3b rotate freely, and the drive source (not shown) that drives this two pair roller 3a, 3b rotation.
Working roll 3a and back up roll 3b can heat surface temperature and be warmed up to the warm-up mill of uniform temperature (the 2nd temperature), on one side the magnesium alloy plate S through between working roll 3a is sent on one side magnesium alloy plate S is heated to a direction, make its intensification and depress.Working roll 3a and back up roll 3b for example have and on the position from surface to prescribed depth, with predetermined distance, along axis direction, imbed the structure of many bar-shaped cartridge heaters.
Above-mentioned the 2nd temperature is for example 150 ℃ of above and 350 ℃ of following scopes.
So, milling train 3 stably carries out thickness to magnesium alloy plate S and depresses and make its rectangularization.
And milling train 3 makes the throughput direction upset of magnesium alloy plate S in the moment of regulation, come and go rolling.So, milling train 3 is the scope that 1mm left and right thickness is pressed down to 0.2～0.5mm by magnesium alloy plate S from for example thickness, or 50 μ m following (for example 30～40 μ m).Make its rectangularization.
At this, the milling train 3 of present embodiment is that the progression that minor diameter working roll also can be set switches milling train.Fig. 3 A represents to set for the milling train 3 of the situation (situation about representing in Fig. 1) of 4 level structures, and Fig. 3 B represents to set for the milling train 3 of the situation of 10 level structures.This milling train 3 is normally set 4 level structures shown in Fig. 3 A for, but the in the situation that of thin material, for example, in the situation of 50 μ m foil rollings, as shown in Figure 4 B, from passage midway, set 10 level structures that are altered to the horizontal supporting roller 3e that possesses a pair of minor diameter working roll 3d and upper and lower two pairs.
Fig. 4 represents other structure example of this milling train 3, and Fig. 4 A represents the milling train 31 of 6 level structures, and Fig. 4 B represents the milling train 32 of 10 level structures.
Milling train 31 has a pair of working roll 3a and two couples of back up roll 3b, and milling train 32 has a pair of working roll 3a and four couples of back up roll 3b.
At this, in four couples of back up roll 3b of milling train 32, two couple (back up roll contacting with working roll 3a) of inner side is also referred to as intermediate calender rolls.
Get back to Fig. 1 and proceed explanation.
Pinch roll 4 is same with above-mentioned working roll 3a and back up roll 3b, have and on the position from surface to prescribed depth, with predetermined distance, along axis direction, imbed the structure of many bar-shaped cartridge heaters, make surface temperature be warmed up to proper temperature (for example 150 ℃ above and 350 ℃ following) warm-up mill, auxiliary conveying is accompanied by the round rolling of milling train 3 and the magnesium alloy plate S of left and right walking.This pinch roll 4 adds between hot coiler 1 at milling train 3 and the 1st guarantor, milling train 3 and the 2nd is protected to add between hot coiler 2 and disposed respectively many groups.
These pinch rolls 4 are given the suitable tension force of magnesium alloy plate S by milling train 3 rollings by the adjusting of conveyance speed.
Tension-adjusting gear 5 configures in the mode being clipped between two pairs of adjacent pinch rolls 4, as shown in Figure 5, possesses two stationary roll 5a and a dance roller 5b.Magnesium alloy plate S is coiled into dance roller 5b and is suspended between two stationary roll 5a by magnesium alloy plate S, by dance roller 5b move up and down control tension force, make the variable of the tensometer (not shown) that arranges in addition for certain.
In this structure, hot-rolling arrangement 100 carries out the finish rolling of magnesium alloy plate S.Below, the action of hot-rolling arrangement 100 is described.
Magnesium alloy plate S is by protecting and to add hot coiler 1 debatching and to batch the 2nd and protect and add hot coiler 2 or protect and add hot coiler 2 debatchings and batch the 1st and protect and add hot coiler 1 and to a direction conveyance, by milling train 3 rollings from the 2nd on the contrary from the 1st.
The temperature of magnesium alloy plate S is being protected and to be added hot coiler 1 and to the 2nd, protect to add hot coiler 2 and slightly decline from the 1st, but because working roll 3a, back up roll 3b and pinch roll 4 are warm-up mills, so the temperature of the material contacting with these rollers reduces, temperature change is very little.
The 1st protect add hot coiler 1(or the 2nd protect add hot coiler 2) after debatching magnesium alloy plate S finishes, hot-rolling arrangement 100 overturns rolling direction, hot-rolling arrangement 100 repeats This move and toward ground return, magnesium alloy plate S is rolled, magnesium alloy plate S is depressed by thickness successively, produce the sheet material that thickness is the scope of 0.2～0.5mm, or the foil of 50 μ m following (for example 30 μ m～40 μ m).
At this, in following table 1, represent the object lesson of rolling scheme of the finish rolling of this hot-rolling arrangement 100.
Table 1
Final thickness: 0.04mm
In the rolling scheme, magnesium alloy plate S is that material is that AZ31B, size are that thickness is the coil method that 1.00mm, width are 300mm.Milling train 3 is 4 grades, and working roll is 165mm to the diameter of each roller of 3a, and reel length is 500mm, and the diameter of each roller of back up roll 3b is 300mm, and the diameter of each roller of pinch roll 4 is 150mm.
And in above-mentioned example, heating and holding temperature that two guarantors add hot coiler 1,2 are 250 ℃, working roll 3a, back up roll 3b and pinch roll 4 are warm-up mills of internal heater, and surface temperature is 200 ℃.
And the mill speed of take is necessarily carried out the round rolling of 9 passages (coming and going 4 times half), the foil that is 0.04mm as final thickness as 30m/ is divided into.And, when the 6th passage, be exchanged into 10 grades of minor diameters (work roll diameter: φ 60mm) rolling mill, uses final level passage (the 9th passage) afterwards.
So the magnesium alloy plate S in rolling is soft owing to being that high temperature holds, if the position outside milling train 3 has also applied high pressure, likely remain impression, but in hot-rolling arrangement 100 of the present invention, by the pinch roll 4 by organizing, at a plurality of positions, clamp magnesium alloy plate S more, the power of each pinch roll 4 clampings is disperseed by less, has eliminated the possibility of the impression that residual pinch roll 4 forms.
And, in this hot-rolling arrangement 100, by tension-adjusting gear 5, make the tension force of the magnesium alloy plate S from pinch roll 4 to next pinch roll 4 for certain.So, prevent crooking or gauffer of magnesium alloy plate S, guaranteed stable rolling.
Due to according to this hot-rolling arrangement 100, in the roughly total length of magnesium alloy plate S, while heating and being incubated, be rolled, so can suppress the temperature of magnesium alloy plate S, reduce, prevent that the quality of the product that produces because of the temperature change in hot rolling from declining.Therefore, can improve yield rate, increase output, guarantee well highly finished product, be the quality of sheet material or foil.
In addition, in the present embodiment exemplified with the milling train of 4 grades, 6 grades and 10 grades, but be not limited in this when implementing.
Magnesium alloy hot-rolling mill of the present invention can heat and heat up magnesium alloy plate owing to being configured to working roll and the back up roll of milling train, so can prevent that the quality of the product that produces because of the temperature change in magnesium alloy plate hot rolling from reducing.In addition, can improve yield rate, increase output, guarantee well the quality of sheet material or foil.

Claims (2)

1. a magnesium alloy hot-rolling mill, entrance side and outlet side two ends at milling train are provided with the coiling machine that can the magnesium alloy plate of each coiled material state be heated and is incubated, by repeatedly oppositely rolling successively above-mentioned magnesium alloy plate is carried out to thickness and depresses, it is characterized in that
Above-mentioned milling train possesses working roll and the back up roll that surface temperature can heat and be warmed up to certain uniform temperature,
Above-mentioned milling train is that the progression that the diameter roll that can heat and heat up also can be set switches milling train,
Above-mentioned working roll and back up roll have imbeds the structure of many bar-shaped cartridge heaters on the position from surface to prescribed depth along axis direction with predetermined distance.
2. magnesium alloy hot-rolling mill as claimed in claim 1, it is characterized in that, between each of above-mentioned milling train and above-mentioned a pair of takers-in, dispose the pinch roll of having assembled the multipair up-down rollers that can heat and heat up, carry out the stable conveyance of magnesium alloy coiled material, between above-mentioned pinch roll, be provided with tension-adjusting gear.
CN201310655630.8A 2007-10-16 2008-10-16 Magnesium alloy hot rolling apparatus Pending CN103639199A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007269057A JP5264140B2 (en) 2007-10-16 2007-10-16 Magnesium alloy hot rolling equipment
JP2007-269057 2007-10-16

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN200880111488A Division CN101821024A (en) 2007-10-16 2008-10-16 Magnesium alloy hot-rolling mill

Publications (1)

Publication Number Publication Date
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CN201310655630.8A Pending CN103639199A (en) 2007-10-16 2008-10-16 Magnesium alloy hot rolling apparatus
CN200880111488A Pending CN101821024A (en) 2007-10-16 2008-10-16 Magnesium alloy hot-rolling mill

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Country Status (9)

Country Link
US (1) US20110067474A1 (en)
EP (1) EP2213387B1 (en)
JP (1) JP5264140B2 (en)
KR (1) KR101204497B1 (en)
CN (2) CN103639199A (en)
CA (1) CA2702723A1 (en)
RU (1) RU2449844C2 (en)
TW (1) TW200927314A (en)
WO (1) WO2009051176A1 (en)

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EP2213387B1 (en) 2013-06-19
CA2702723A1 (en) 2009-04-23

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Application publication date: 20140319