CN109092897A - A kind of Impulsive Current auxiliary deep cooling reducing asymmetrical rolling apparatus and method preparing ultrafine grain metal band - Google Patents

A kind of Impulsive Current auxiliary deep cooling reducing asymmetrical rolling apparatus and method preparing ultrafine grain metal band Download PDF

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Publication number
CN109092897A
CN109092897A CN201810997050.XA CN201810997050A CN109092897A CN 109092897 A CN109092897 A CN 109092897A CN 201810997050 A CN201810997050 A CN 201810997050A CN 109092897 A CN109092897 A CN 109092897A
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deep cooling
working roll
sheet metal
crimping device
metal strip
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CN201810997050.XA
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喻海良
崔晓辉
王青山
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Central South University
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Central South University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B9/00Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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
    • B21B2001/221Metal-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 by cold-rolling

Abstract

A kind of Impulsive Current auxiliary deep cooling reducing asymmetrical rolling device preparing ultrafine grain metal band, including left side deep cooling box and right side deep cooling box, there is left side metal crimping device in the deep cooling box of left side, there is right side metal crimping device in the deep cooling box of right side, sheet metal strip both ends to be rolled are separately positioned on left side metal crimping device and right side metal crimping device, upper and lower in the middle position of sheet metal strip is respectively arranged to the top working roll and bottom working roll rolled to it, the left side conductive rollers and right side conductive roller of connection Impulsive Current power supply are respectively arranged in the two sides of top working roll and bottom working roll, left side conductive rollers and right side conductive roller act on sheet metal strip, apply Impulsive Current to it, top working roll is different with the roller diameter of bottom working roll.The present invention also provides corresponding Impulsive Currents to assist deep cooling reducing asynchronous rolling method, is suitble to prepare large-sized Ultra-fine Grained high-performance band, and avoidable rolled piece edge is cracked, has important reference prospect.

Description

Deep cooling reducing is asynchronous rolls for a kind of Impulsive Current auxiliary preparing ultrafine grain metal band Apparatus and method processed
Technical field
The invention belongs to ultrafine grain metal field of material technology, in particular to a kind of strong arteries and veins for preparing ultrafine grain metal band Rush electric current auxiliary deep cooling reducing asymmetrical rolling apparatus and method.
Background technique
Ultrafine grain metal material has good corrosion resistance and anti-fatigue performance due to excellent in mechanical performance, obtains To the extensive concern of engineering staff and scientific research personnel.A large amount of large plastometric set method is developed to go to prepare ultrafine grain metal Material.Such as the methods of equal channel pressings method, high pressure torsion, accumulation pack rolling.Equal channel pressings method is suitble to prepare bar, high Pressure torsion method is suitble to prepare small sample.Above two method can not be used to prepare strip product.Accumulate pack rolling method It is suitble to preparation strip product, but major defect is that rolled piece edge is easy to appear crackle, also, it needs to carry out surface to rolled piece Processing.
Summary of the invention
In order to overcome the disadvantages of the above prior art, ultrafine grain metal band is prepared the purpose of the present invention is to provide a kind of Impulsive Current assist deep cooling reducing asymmetrical rolling apparatus and method, be suitble to prepare large-sized Ultra-fine Grained high-performance aluminium alloy Band, copper alloy band, titanium alloy strip etc. promote material at low temperature and deform plasticity, subtract due to applying electric pulse when plastic deformation Small deformation drag increases the processing times of material, and intensity is improved and improves with plasticity, can avoid rolled piece edge and splits Line, using the high performance sheet metal strip of technology preparation in structural material, aerospace material, shellproof protection, automobile light weight The fields such as change have important reference prospect.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of Impulsive Current auxiliary deep cooling reducing asymmetrical rolling device preparing ultrafine grain metal band, including left side are deep Ice chest 1 and right side deep cooling box 16 have left side metal crimping device 2 in left side deep cooling box 1, there is right side metal in right side deep cooling box 15 Crimping device 15,3 both ends of sheet metal strip to be rolled are separately positioned on left side metal crimping device 2 and right side metal crimping device On 15, the upper and lower in the middle position of sheet metal strip 3 is respectively arranged to the top working roll 9 rolled to it and lower work Roller 10 is respectively arranged with the left side conductive rollers 5 of connection Impulsive Current power supply 6 in the two sides of top working roll 9 and bottom working roll 10 With right side conductive roller 13, left side conductive rollers 5 and right side conductive roller 13 act on sheet metal strip 3, apply Impulsive Current to it, It is characterized in that, the top working roll 9 is different with the roller diameter of bottom working roll 10.
The two sides of the top working roll 9 and bottom working roll 10 are separately provided for driving 3 side-to-side movement of sheet metal strip Left side deflector roll 4 and right side deflector roll 14.
The left side of the top working roll 9 and bottom working roll 10 is respectively arranged with the upper left side nitrogen above sheet metal strip 3 The right side of gas jets 7 and the lower left side nitrogen nozzle 8 below sheet metal strip 3, top working roll 9 and bottom working roll 10 is set respectively It is equipped with the upper right side nitrogen nozzle 11 for being located at 3 top of sheet metal strip and the lower right side nitrogen nozzle 12 positioned at 3 lower section of sheet metal strip, The upper left side nitrogen nozzle 7, lower left side nitrogen nozzle 8, upper right side nitrogen nozzle 11 and lower right side nitrogen nozzle 12 act on Sheet metal strip 3 realizes the deep cooling temperature control in the operation of rolling.
The ratio between roller diameter of the bottom working roll 10 and top working roll 9 is 1.1-1.4.
The left side metal crimping device 2 and right side metal crimping device 15 are by Serve Motor Control, drum diameter Φ 100mm~Φ 500mm adds sleeve diameter identical as drum diameter, wall thickness 80-150mm, and reel length is 600~800mm.
The present invention also provides a kind of Impulsive Currents for preparing ultrafine grain metal band to assist deep cooling reducing asymmetrical rolling Method includes the following steps:
Step 1: 3 one end of sheet metal strip is set to left side metal crimping device 2, top working roll 9 and bottom working roll are opened 10 roll gap, after sheet metal strip 3 passes through roll gap, the other end is arranged in right side metal crimping device 15;
Step 2: opening left side deep cooling box 1 and right side deep cooling box 16, cooled down using nitrogen, is controlled according to band amount Sheet metal strip 3 is set to be uniformly cooled -190 DEG C~-150 DEG C cooling time;
Step 3: opening Impulsive Current power supply 6;
Step 4: open right side metal crimping device 15 or left side metal crimping device 2, make sheet metal strip 3 turn right or Left side movement, carries out the rolling of Impulsive Current deep cooling, after having rolled all parts, stops right side metal crimping device 15;
Step 5: open left side metal crimping device 2 or right side metal crimping device 15, make sheet metal strip 3 toward left side or Right side movement, carries out the rolling of Impulsive Current deep cooling, after having rolled all parts, stops left side metal crimping device 2;
The 4th step and the 5th step are repeated, until the total reduction of rolled piece, that is, sheet metal strip 3 reaches 90%;
Step 6: taking out sheet metal strip 3, ultrafine grain metal band is obtained.
The sheet metal strip 3 is aluminium alloy strips, copper alloy band or titanium alloy strip.
The 3 width 100mm-500mm of sheet metal strip, before rolling with a thickness of 0.8mm-2.0mm.
The third step, the size of current of Impulsive Current power supply 6 are 3000A~8000A, voltage 12V-200V.
4th step and the 5th step, in the operation of rolling, passes drafts is controlled 15%~35%.
4th step and the 5th step in the operation of rolling, open the upper left side nitrogen of top working roll 9 and 10 two sides of bottom working roll Gas jets 7, lower left side nitrogen nozzle 8, upper right side nitrogen nozzle 11 and lower right side nitrogen nozzle 12, are arranged the nitrogen temperature of ejection Lower than -150 DEG C, sheet metal strip 3 is acted on, realizes the deep cooling temperature control in the operation of rolling.
Cardinal principle of the invention is that metal material shows strong plastic deformation ability, arteries and veins under Impulsive Current effect Rushing electric current can be improved the deformability of the plastic histories material such as drawing, and can be improved the mechanical property of material.Deep cooling In deformation process, the dislocation density of material can effectively be inhibited, and promote crystal grain refinement.During asymmetrical rolling, rolling There are biggish Strong shears to deform for deformed area processed.Thus, three kinds of external effects are deformed in conjunction with Impulsive Current, deep cooling, Strong shear Realize that material grains refinement, strength and toughness improve simultaneously.The present invention is suitable for Ultra-fine Grained high-performance aluminium alloy band, copper at present The preparation of the materials such as alloy strip steel rolled stock, titanium alloy strip.
Detailed description of the invention
Fig. 1 is Impulsive Current auxiliary deep cooling reducing asymmetrical rolling apparatus structure schematic diagram of the present invention.
1. left side deep cooling box;2. left side metal crimping device;3. sheet metal strip;4. left side deflector roll;5. left side conductive rollers;6. Impulsive Current power supply;7. upper left side nitrogen nozzle;8. lower left side nitrogen nozzle;9. top working roll, roller radius R1;10. Bottom working roll, roller radius R2;11. upper right side nitrogen nozzle;12. lower right side nitrogen nozzle;13. right side conductive roller;14. right Side deflector roll;15. right side metal crimping device;16. right side deep cooling box.
Specific embodiment
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of Impulsive Current auxiliary deep cooling reducing asymmetrical rolling device for preparing ultrafine grain metal band, Including left side deep cooling box 1 and right side deep cooling box 16, there is left side metal crimping device 2 in left side deep cooling box 1, in right side deep cooling box 16 There is right side metal crimping device 15,3 both ends of sheet metal strip to be rolled are separately positioned on left side metal crimping device 2 and right side gold Belong on crimping device 15, the upper and lower in the middle position of sheet metal strip 3 is respectively arranged to the upper work rolled to it Roller 9 and bottom working roll 10, the radius R1 of top working roll 9 and the radius R2 of bottom working roll 10 are different (R2:R1=1.1-1.4), into Row friction speed asymmetrical rolling.
It is conductive in the left side that the two sides of top working roll 9 and bottom working roll 10 are respectively arranged with connection Impulsive Current power supply 6 Roller 5 and right side conductive roller 13, the left side deflector roll 4 for driving 3 side-to-side movement of sheet metal strip and right side deflector roll 14 and for real The nitrogen nozzle of 3 deep cooling temperature control of sheet metal strip in the existing operation of rolling.
Wherein, left side conductive rollers 5 and right side conductive roller 13 act on sheet metal strip 3, apply Impulsive Current to it.
There are four nitrogen nozzles, respectively upper left side nitrogen nozzle 7, lower left side nitrogen nozzle 8, upper right side nitrogen nozzle 11 With lower right side nitrogen nozzle 12, upper left side nitrogen nozzle 7 and lower left side nitrogen nozzle 8 are located at top working roll 9 and bottom working roll 10 Left side, be separately positioned on 3 upper and lower of sheet metal strip;Upper right side nitrogen nozzle 11 and lower right side nitrogen nozzle 12 are located at upper work The right side of roller 9 and bottom working roll 10 is separately positioned on 3 upper and lower of sheet metal strip.
For tradition rolling, contact in rolling can be made to form biggish Strong shear using reducing asymmetrical rolling and become Shape area, promotes crystallite dimension more to refine.At the same time, asymmetrical rolling can reduce the draught pressure of contact in rolling, make to roll Part is easier to be rolled thin.
The method for preparing ultrafine grain metal band using the device, includes the following steps:
Step 1: with sheet metal strip 3 (aluminium alloy strips, copper alloy band, titanium alloy strip) for raw material, sheet metal strip 3 Width 100mm-500mm, before rolling with a thickness of 0.8mm-2.0mm.
Step 2: one end of sheet metal strip 3 is set to left side metal crimping device 2, two work roller gaps are opened, it will The other end is set to right side metal crimping device 15.
Step 3: opening left side deep cooling box 1, cooled down using nitrogen, cooling time is controlled according to band amount, makes metal Band 3 is uniformly cooled -190 DEG C~-150 DEG C.
Step 4: opening right side deep cooling box 16, temperature is identical as 1 temperature of left side deep cooling box.
Step 5: opening all nitrogen nozzles, the nitrogen temperature of ejection is set lower than -150 DEG C.
Step 6: opening Impulsive Current power supply 6, size of current is 3000A~8000A, voltage 12V-200V.
Step 7: opening right side metal crimping device 15, rotating milling train to the right, carries out Impulsive Current deep cooling and roll System, rolled piece, which is turned right, carries out rolling deformation, until having rolled all rolled pieces, stops right side metal crimping device 15, milling train.Rolling In the process, the control of passes drafts is 15%~35%.
Step 8: opening left side metal crimping device 2, rotating milling train to the left, the rolling of Impulsive Current deep cooling is carried out, Rolled piece carries out rolling deformation toward left side, until having rolled all rolled pieces, stops left side metal crimping device 2, milling train.The operation of rolling In, passes drafts is controlled 15%~35%.
The 7th step and the 8th step are repeated, until the total reduction of rolled piece, that is, sheet metal strip 3 reaches 90%.
Step 9: taking out rolled piece to get ultrafine grain metal band.
It is two specific embodiments below.
Embodiment 1
The preparation of Ultra-fine Grained titanium TA1 band Impulsive Current deep cooling reducing asymmetrical rolling, R2:R1=1.2, with reference to Fig. 1, step It is as follows:
Step 1: sheet metal strip 3 is pure titanium TA1 band, width 100mm, with a thickness of 1.0mm before rolling.
Step 2: sheet metal strip 3 is put on left side metal crimping device 2, two work roller gaps are opened, by metal tape One end of material 3 is placed on right side metal crimping device 15.
Step 3: opening left side deep cooling box 1, cooled down using nitrogen, cooling time is controlled according to band amount, makes metal Band 3 is uniformly cooled -185 DEG C.
Step 4: opening right side deep cooling box 16, temperature is -185 DEG C.
Step 5: opening all nitrogen nozzles, the nitrogen temperature that ejection is arranged is -160 DEG C.
Step 6: opening Impulsive Current power supply 6, size of current 4000A, voltage 15V.
Step 7: opening right side metal crimping device 15, rotating milling train to the right, carries out Impulsive Current deep cooling and roll System, rolled piece, which is turned right, carries out rolling deformation, until having rolled all rolled pieces, stops opening right side metal crimping device 15, milling train. In the operation of rolling, passes drafts is controlled 20%.
Step 8: opening left side metal crimping device 2, rotating milling train to the left, the rolling of Impulsive Current deep cooling is carried out, Rolled piece carries out rolling deformation toward left side, until having rolled all rolled pieces, stops left side metal crimping device 2, milling train.The operation of rolling In, passes drafts is controlled 15%.
The 7th step and the 8th step are repeated, until rolled piece is with a thickness of 0.1mm, obtains the pure titanium Ta1 band of Ultra-fine Grained, after tested, Its tensile strength is more than 600MPa.
Embodiment 2
The preparation of Ultra-fine Grained T1 copper strip Impulsive Current deep cooling reducing asymmetrical rolling, R2:R1=1.3, with reference to Fig. 1, step It is as follows:
Step 1: sheet metal strip 3 is T1 copper strip, width 200mm, with a thickness of 1.2mm before rolling.
Step 2: being to be put on left side metal crimping device 2 by sheet metal strip 3, two work roller gaps are opened, by metal One end of band 3 is placed on right side metal crimping device 15.
Step 3: opening left side deep cooling box 1, cooled down using nitrogen, cooling time is controlled according to band amount, makes metal Band 3 is uniformly cooled -160 DEG C.
Step 4: opening right side deep cooling box 16, temperature is -160 DEG C.
Step 5: opening all nitrogen nozzles, the nitrogen temperature that ejection is arranged is -150 DEG C.
Step 6: opening Impulsive Current power supply 6, size of current 5000A, voltage 15V.
Step 7: opening right side metal crimping device 15, rotating milling train to the right, carries out Impulsive Current deep cooling and roll System, allows rolled piece to turn right and carries out rolling deformation, until having rolled all rolled pieces, stops right side metal crimping device 15, milling train.It rolls During system, passes drafts is controlled 25%.
Step 8: opening left side metal crimping device 2, rotating milling train to the left, the rolling of Impulsive Current deep cooling is carried out, It allows rolled piece to carry out rolling deformation toward left side, until having rolled all rolled pieces, stops left side metal crimping device 2, milling train.It rolled Cheng Zhong, passes drafts are controlled 20%.
The 7th step and the 8th step are repeated, until rolled piece is with a thickness of 0.12mm, obtains Ultra-fine Grained T1 copper strip, after tested, Tensile strength is more than 400MPa.

Claims (10)

1. a kind of Impulsive Current auxiliary deep cooling reducing asymmetrical rolling device for preparing ultrafine grain metal band, including left side deep cooling Case (1) and right side deep cooling box (16), there is left side metal crimping device (2) in left side deep cooling box (1), and right side deep cooling box has in (15) Right side metal crimping device (15), sheet metal strip to be rolled (3) both ends are separately positioned on left side metal crimping device (2) and the right side On side metal crimping device (15), the upper and lower in the middle position of sheet metal strip (3) is respectively arranged to roll it Top working roll (9) and bottom working roll (10), it is strong to be respectively arranged with connection in the two sides of top working roll (9) and bottom working roll (10) The left side conductive rollers (5) and right side conductive roller (13) of pulse current power supply (6), left side conductive rollers (5) and right side conductive roller (13) Sheet metal strip (3) are acted on, apply Impulsive Current to it, which is characterized in that the top working roll (9) and bottom working roll (10) Roller diameter it is different.
2. preparing the Impulsive Current auxiliary deep cooling reducing asymmetrical rolling dress of ultrafine grain metal band according to claim 1 It sets, which is characterized in that the two sides of the top working roll (9) and bottom working roll (10) are separately provided for driving sheet metal strip (3) the left side deflector roll (4) and right side deflector roll (14) of side-to-side movement.
3. preparing the Impulsive Current auxiliary deep cooling reducing asymmetrical rolling dress of ultrafine grain metal band according to claim 1 It sets, which is characterized in that be respectively arranged on sheet metal strip (3) on the left of the top working roll (9) and bottom working roll (10) Side upper left side nitrogen nozzle (7) and be located at sheet metal strip (3) below lower left side nitrogen nozzle (8), top working roll (9) and under The upper right side nitrogen nozzle (11) that is respectively arranged with above sheet metal strip (3) on the right side of working roll (10) and it is located at metal tape Lower right side nitrogen nozzle (12) below material (3), the upper left side nitrogen nozzle (7), lower left side nitrogen nozzle (8), upper right side Nitrogen nozzle (11) and lower right side nitrogen nozzle (12) act on sheet metal strip (3), realize the deep cooling temperature control in the operation of rolling.
4. preparing the Impulsive Current auxiliary deep cooling reducing asymmetrical rolling dress of ultrafine grain metal band according to claim 1 It sets, which is characterized in that the ratio between roller diameter of the bottom working roll (10) and top working roll (9) is 1.1-1.4.
5. preparing the Impulsive Current auxiliary deep cooling reducing asymmetrical rolling dress of ultrafine grain metal band according to claim 1 It sets, which is characterized in that the left side metal crimping device (2) and right side metal crimping device (15) are by Serve Motor Control, volume Cylinder diameter is Φ 100mm~Φ 500mm, adds sleeve diameter identical as drum diameter, wall thickness 80-150mm, and reel length is 600~800mm.
6. a kind of Impulsive Current auxiliary deep cooling reducing asynchronous rolling method for preparing ultrafine grain metal band, which is characterized in that Include the following steps:
Step 1: sheet metal strip (3) one end is set to left side metal crimping device (2), top working roll (9) and lower work are opened Roller (10) roll gap, after sheet metal strip (3) passes through roll gap, the other end is arranged in right side metal crimping device (15);
Step 2: opening left side deep cooling box (1) and right side deep cooling box (16), cooled down using nitrogen, is controlled according to band amount Sheet metal strip (3) is set to be uniformly cooled -190 DEG C~-150 DEG C cooling time;
Step 3: opening Impulsive Current power supply (6);
Step 4: opening right side metal crimping device (15) or left side metal crimping device (2), sheet metal strip (3) is made to turn right Or left side movement, the rolling of Impulsive Current deep cooling is carried out, after having rolled all parts, stops right side metal crimping device (15);
Step 5: opening left side metal crimping device (2) or right side metal crimping device (15), make sheet metal strip (3) toward left side Or right side movement, the rolling of Impulsive Current deep cooling is carried out, after having rolled all parts, stops left side metal crimping device (2);
The 4th step and the 5th step are repeated, until the total reduction of rolled piece, that is, sheet metal strip (3) reaches 90%;
Step 6: taking out sheet metal strip (3), ultrafine grain metal band is obtained.
7. preparing the Impulsive Current auxiliary deep cooling reducing asymmetrical rolling side of ultrafine grain metal band according to claim 6 Method, which is characterized in that the sheet metal strip (3) is aluminium alloy strips, copper alloy band or titanium alloy strip, the sheet metal strip (3) width 100mm-500mm, before rolling with a thickness of 0.8mm-2.0mm.
8. preparing the Impulsive Current auxiliary deep cooling reducing asymmetrical rolling side of ultrafine grain metal band according to claim 6 Method, which is characterized in that the third step, the size of current of Impulsive Current power supply (6) are 3000A~8000A, voltage 12V- 200V。
9. preparing the Impulsive Current auxiliary deep cooling reducing asymmetrical rolling side of ultrafine grain metal band according to claim 6 Method, which is characterized in that the 4th step and the 5th step, in the operation of rolling, passes drafts is controlled 15%~35%.
10. preparing the Impulsive Current auxiliary deep cooling milling method of ultrafine grain metal band, feature according to claim 6 It is, the 4th step and the 5th step, in the operation of rolling, opens the upper left side of top working roll (9) and bottom working roll (10) two sides Nitrogen nozzle (7), lower left side nitrogen nozzle (8), upper right side nitrogen nozzle (11) and lower right side nitrogen nozzle (12), setting spray Nitrogen temperature be lower than -150 DEG C, act on sheet metal strip (3), realize the operation of rolling in deep cooling temperature control.
CN201810997050.XA 2018-08-29 2018-08-29 A kind of Impulsive Current auxiliary deep cooling reducing asymmetrical rolling apparatus and method preparing ultrafine grain metal band Pending CN109092897A (en)

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CN111112330A (en) * 2020-01-10 2020-05-08 江西理工大学 Processing method for improving strength of copper strip without causing anisotropy
CN111250540A (en) * 2020-01-22 2020-06-09 武汉科技大学 Silicon steel cold rolling process based on direct current assistance
CN111644464A (en) * 2020-06-15 2020-09-11 太原科技大学 Snakelike differential temperature rolling method for improving deformation uniformity of hot rolled plate strip steel
CN112795797A (en) * 2020-12-28 2021-05-14 中南大学 Method for preparing high-strength and high-toughness aluminum-based high-entropy alloy composite strip
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CN108144964A (en) * 2018-02-10 2018-06-12 太原理工大学 A kind of method that pulse current auxiliary multi-roll mill rolls ultra-thin foil
CN108435791A (en) * 2018-05-02 2018-08-24 中南大学 A kind of deep cooling asynchronous rolling method preparing stratiform copper/lithium composite foil

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CN111112330A (en) * 2020-01-10 2020-05-08 江西理工大学 Processing method for improving strength of copper strip without causing anisotropy
CN111112330B (en) * 2020-01-10 2021-07-13 江西理工大学 Processing method for improving strength of copper strip without causing anisotropy
CN111250540A (en) * 2020-01-22 2020-06-09 武汉科技大学 Silicon steel cold rolling process based on direct current assistance
CN111644464A (en) * 2020-06-15 2020-09-11 太原科技大学 Snakelike differential temperature rolling method for improving deformation uniformity of hot rolled plate strip steel
CN111644464B (en) * 2020-06-15 2022-04-26 太原科技大学 Snakelike differential temperature rolling method for improving deformation uniformity of hot rolled plate strip steel
CN112795797A (en) * 2020-12-28 2021-05-14 中南大学 Method for preparing high-strength and high-toughness aluminum-based high-entropy alloy composite strip
CN113118212A (en) * 2021-04-16 2021-07-16 上海五星铜业股份有限公司 Wide-width foil rolling mill and rolling method

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Application publication date: 20181228