CN108144963B - A kind of covered composite yarn metal difference slab pulse current rolling mill practice - Google Patents
A kind of covered composite yarn metal difference slab pulse current rolling mill practice Download PDFInfo
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- CN108144963B CN108144963B CN201711247928.XA CN201711247928A CN108144963B CN 108144963 B CN108144963 B CN 108144963B CN 201711247928 A CN201711247928 A CN 201711247928A CN 108144963 B CN108144963 B CN 108144963B
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- band
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- composite strip
- rolling
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- 239000002131 composite material Substances 0.000 title claims abstract description 64
- 238000005096 rolling process Methods 0.000 title claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000005476 soldering Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 24
- 229910052782 aluminium Inorganic materials 0.000 claims description 24
- 239000004411 aluminium Substances 0.000 claims description 21
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
- 239000011777 magnesium Substances 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 238000004381 surface treatment Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 239000000155 melt Substances 0.000 abstract description 4
- 238000003801 milling Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910000861 Mg alloy Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910001234 light alloy Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack 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
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- 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
- B21B45/04—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 de-scaling, e.g. by brushing
- B21B45/06—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 de-scaling, e.g. by brushing of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
-
- 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
- B21B2003/001—Aluminium or its alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
- B21B2261/043—Blanks with variable thickness in the rolling direction
Abstract
Band A and the surface treated surface band B are stacked according to A/B/A, wherein surface treated face is opposite, obtain A/B/A composite strip by a kind of covered composite yarn metal difference slab pulse current rolling mill practice；In rolling entrance, pulse current is applied to A/B/A composite strip, so that material surface regional area is discharged, melts coating metal；The A/B/A composite strip of pulsed current annealing is rolled, realizes material interface soldering, A/B/A composite strip is rolled into 0.8-2mm, then carries out Varying-thickness rolling, final production goes out A/B/A covered composite yarn metal difference slab.The present invention realizes composite strip interfacial weld Quality advance and the comprehensive raising of composite strip mechanical performance using pulse current.At the same time, it is rolled using Varying-thickness, prepares the covered composite yarn metal difference slab that directly can be used for auto parts and components manufacture.
Description
Technical field
The invention belongs to metal material rolling technical field, in particular to a kind of covered composite yarn metal difference slab pulse current
Rolling mill practice.
Background technique
Thickening plate is directly prepared by rolling technique, reduces welding sequence, and do not have weld seam in rolled piece, is short route, section
Can important technology, and be of great significance to product quality is improved, obtained domestic and international academia and engineering circles
Extensive concern.However, current variable-thickness strip is still confined to the steel products of homogenous material.
One of main application of thickening plate is exactly automotive field, and uses advanced light-alloy band or light-alloy compound
Band substitutes one of the important directions that traditional steel material is automotive light weight technology development.Relative to steel material, aluminium alloy is close
It spends smaller；Relative to aluminium alloy, magnesium alloy density is smaller.However, the problems such as magnesium alloy is oxidizable, difficult processing, constrains magnesium conjunction
Application of the gold in automotive field.Mg alloy surface is coated using aluminium alloy, aluminium/magnesium/aluminum composite belt material is generated and is conducive to
In conjunction with the two advantage, lightweight development is realized.However, there is presently no develop covered composite yarn metal difference slab.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of covered composite yarn metal difference slabs
Pulse current rolling mill practice, the covered composite yarn metal difference slab of technique production have substitution variable cross-section steel and traditional tailor welded
Prospect.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of covered composite yarn metal difference slab pulse current rolling mill practice, includes the following steps:
Step 1: be processed into identical length and width using band A and band B as raw material, wherein band A and band
Material B material is not identical, and thickness range is 2-5mm before rolling；
Step 2: being surface-treated to band A and band B using wire brush, oxide on surface is removed.
Step 3: band A and the surface treated surface band B are stacked according to A/B/A, wherein by surface
The face of processing is opposite, obtains A/B/A composite strip；
Step 4: applying pulse current in rolling entrance to A/B/A composite strip, material surface regional area occurring
Electric discharge, melts coating metal；
Step 5: the A/B/A composite strip to pulsed current annealing rolls, material interface soldering, passage pressure are realized
Lower rate control is in 15%-30%；
Step 6: repeating the 4th step, the 5th step, A/B/A composite strip is rolled into 0.8-2mm；
Step 7: carrying out shearing to the A/B/A composite strip that the 6th step obtains；
Step 8: carrying out Varying-thickness rolling to the A/B/A composite strip that the 7th step obtains, final production goes out A/B/A cladding
Composition metal difference slab.
The band A is one of aluminium and its alloy, and B is difficult one of the deformable metal and its alloy such as titanium, magnesium.
The original depth of the band A and band B is different.
The pulse current parameter is adjusted according to the thickness and material of A/B composite strip, and thickness is thicker, and electric current is got over
Greatly, thickness is thinner, and electric current is smaller.
The pulse current power regulating range is 10-150KVA.
In the Varying-thickness operation of rolling, rolled piece thickness is accurately adjusted using hydraulic device, meanwhile, according to thickeing
Product requirement is spent, to the mill speed of Varying-thickness transitional region, movement velocity controls down.
Compared with prior art, the present invention realizes composite strip interfacial weld Quality advance and compound using pulse current
Band mechanical performance is comprehensive to be improved.At the same time, it is rolled using Varying-thickness, prepares and directly can be used for auto parts and components manufacture
Covered composite yarn metal difference slab.
Cardinal principle of the invention is during pulsed current annealing, when there are lesser gaps for composite material interface
When, electric discharge behavior can occur for interface, realize that metal temperature increases sharply and metal molten occurs in interface regional area, with
During rolling large plastometric set afterwards, the quick soldering at interface is realized using metal plastic deformation flow principles.At the same time,
The mechanical property of the metal material can be increased substantially using pulsed current annealing metal material before the rolling, thus, it uses
Its mechanical performance can be equally substantially improved in pulsed current annealing composite material.
The present invention is suitable for preparing the composition metals difference slabs such as aluminium/magnesium/aluminium, aluminium/titanium/aluminium at present.Gained covered composite yarn gold
Belonging to poor slab has bright prospects in fields such as automotive light weight technologies.
Detailed description of the invention
Fig. 1 is covered composite yarn metal difference slab pulse current rolling preparation flow figure of the present invention.
Fig. 2 is 1 gained aluminium of the embodiment of the present invention/magnesium/aluminium covered composite yarn metal difference slab schematic diagram.
Fig. 3 is 2 gained aluminium of the embodiment of the present invention/titanium/aluminium covered composite yarn metal difference slab schematic diagram.
Specific embodiment
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
Embodiment 1: aluminium/magnesium/aluminium covered composite yarn metal difference slab preparation, with reference to Fig. 1.
Step 1: wherein band A1 is aluminum strip using band A1 and band B2 as raw material, band B2 is magnesium ribbon material.Rolling
The thickness of preceding band A1 and band B2 is respectively 3.2mm.Band A1 and band B2 are processed into width and length is identical
Size.
Step 2: being surface-treated to band A1 and band B2 using wire brush, oxide on surface is removed.
Step 3: band A1 and the surface treated surface band B2 are stacked according to A/B/A, wherein passing through table
The face of surface treatment is opposite, obtains A/B/A composite strip 3.
Step 4: applying pulse current, pulse to A/B/A composite strip 3 using pulse current device 4 in rolling entrance
Current power is dimensioned to 140KVA, so that material surface regional area is discharged, melts coating metal.
Step 5: using milling train top working roll 5 and milling train bottom working roll 6, to the A/B/A composite strip of pulsed current annealing
3 are rolled, and realize material interface soldering, and percentage pass reduction is controlled 15%~30%.
Step 6: repeating the 4th step, the 5th step, until composite strip is with a thickness of 2mm, pulse current asymmetrical rolling system is obtained
Standby A/B/A composite plate 7.
As rolled piece thickness reduces, pulse current power is reduced, when composite strip thickness is lower than 3mm, pulse current function
Rate is set as 80KVA.
Step 7: shearing to the A/B/A composite plate 7 of pulse current asymmetrical rolling preparation, according to demand, become appropriate
Length and width.
Step 8: being thickend using milling train top working roll 9 and milling train bottom working roll 10 to the A/B composite plate 8 after cutting
Spend asymmetrical rolling, until band side is with a thickness of 1.6mm, side with a thickness of 0.8mm, as shown in Fig. 2, as finished product aluminium/magnesium/
Aluminium covered composite yarn metal difference slab 11.After rolling, metallurgical bonding is realized at aluminium/magnesium interface, meanwhile, the synthesis mechanical property of material
It is able to achieve and is substantially improved.
Embodiment 2: aluminium/titanium/aluminium covered composite yarn metal difference slab preparation, with reference to Fig. 1.
Step 1: wherein band A1 is aluminum strip using band A1 and band B2 as raw material, band B2 is magnesium ribbon material.Rolling
The thickness of preceding band A1 and band B2 is respectively 2mm and 4mm.It is identical with length that band A1 with band B2 is processed into width
Size.
Step 2: being surface-treated to band A1 and band B2 using wire brush, oxide on surface is removed.
Step 3: band A1 and the surface treated surface band B2 are stacked according to A/B/A, wherein passing through table
The face of surface treatment is opposite, obtains A/B/A composite strip 3.
Step 4: applying pulse current, pulse to A/B/A composite strip 3 using pulse current device 4 in rolling entrance
Current power is dimensioned to 150KVA, so that material surface regional area is discharged, melts coating metal.
Step 5: using milling train top working roll 5 and milling train bottom working roll 6, to the A/B/A composite strip of pulsed current annealing
3 are rolled, and realize material interface soldering, and percentage pass reduction is controlled 20%.
Step 6: repeating the 4th step, the 5th step, until composite strip is with a thickness of 1.6mm, pulse current asymmetrical rolling is obtained
The A/B/A composite plate 7 of preparation.
As composite strip thickness reduces, pulse current power gradually lowers, when compound size thickness is lower than 2.4mm,
Pulse current power setting is 50KVA.
Step 7: shearing to the A/B/A composite plate 7 of pulse current asymmetrical rolling preparation, according to demand, become appropriate
Length and width.
Step 8: being thickend using milling train top working roll 9 and milling train bottom working roll 10 to the A/B composite plate 8 after cutting
Spend asymmetrical rolling, until band side is with a thickness of 1.2mm, side with a thickness of 0.7mm, as shown in figure 3, as finished product aluminium/titanium/
Aluminium covered composite yarn metal difference slab 11.After rolling, metallurgical bonding is realized at aluminium/titanium interface, meanwhile, the synthesis mechanical property of material
It is able to achieve and is substantially improved.
Claims (4)
1. a kind of covered composite yarn metal difference slab pulse current rolling mill practice, which comprises the steps of:
Step 1: be processed into identical length and width using band A and band B as raw material, wherein band A and band B material
Material is not identical, and thickness range is 2-5mm before rolling；
Step 2: being surface-treated to band A and band B using wire brush, oxide on surface is removed；
Step 3: band A and the surface treated surface band B are stacked according to A/B/A, wherein by surface treatment
Face it is opposite, obtain A/B/A composite strip；
Step 4: pulse current is applied to A/B/A composite strip, material surface regional area is made to discharge in rolling entrance,
Coating metal is melted, wherein the pulse current parameter is adjusted according to the thickness and material of A/B/A composite strip,
Thickness is thicker, and electric current is bigger, and thickness is thinner, and electric current is smaller, and pulse current power regulating range is 10-150KVA；
Step 5: the A/B/A composite strip to pulsed current annealing rolls, material interface soldering, percentage pass reduction are realized
Control is in 15%-30%；
Step 6: repeating the 4th step, the 5th step, A/B/A composite strip is rolled down to 0.8-2mm；
Step 7: carrying out shearing to the A/B/A composite strip that the 6th step obtains；
Step 8: carrying out Varying-thickness rolling to the A/B/A composite strip that the 7th step obtains, final production goes out A/B/A covered composite yarn
Metal difference slab.
2. covered composite yarn metal difference slab pulse current rolling mill practice according to claim 1, which is characterized in that the band
A is one of aluminium and its alloy, and B is one of titanium and its alloy or one of magnesium and its alloy.
3. covered composite yarn metal difference slab pulse current rolling mill practice according to claim 1, which is characterized in that the band
The original depth of A and band B is different.
4. covered composite yarn metal difference slab pulse current rolling mill practice according to claim 1, which is characterized in that described to thicken
It spends in the operation of rolling, rolled piece thickness is accurately adjusted using hydraulic device, meanwhile, according to Varying-thickness product requirement, to change
The mill speed in thickness transitions region, movement velocity is controlled down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711247928.XA CN108144963B (en) | 2017-12-01 | 2017-12-01 | A kind of covered composite yarn metal difference slab pulse current rolling mill practice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711247928.XA CN108144963B (en) | 2017-12-01 | 2017-12-01 | A kind of covered composite yarn metal difference slab pulse current rolling mill practice |
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| Publication Number | Publication Date |
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| CN108144963A CN108144963A (en) | 2018-06-12 |
| CN108144963B true CN108144963B (en) | 2019-08-27 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6221404A (en) * | 1985-07-23 | 1987-01-29 | Kawasaki Steel Corp | Hot rolling method for three-layered stainless clad steel slab |
| JPS63260618A (en) * | 1987-04-16 | 1988-10-27 | Nippon Steel Corp | Rolling method for composite steel plate |
| CN103276328A (en) * | 2013-05-30 | 2013-09-04 | 济南大学 | Severe plastic deformation technology of magnesium alloy board |
| CN103611727A (en) * | 2013-11-19 | 2014-03-05 | 武汉钢铁(集团)公司 | Production method of composite variable-cross-section metal plate |
| CN103752611A (en) * | 2014-01-03 | 2014-04-30 | 北京科技大学 | Short-process efficient production method for metal-layered composite board strips |
| CN104858232A (en) * | 2015-05-25 | 2015-08-26 | 刘志民 | Preparation method for foam metal thickness difference sheet metal part |
| CN106623421A (en) * | 2016-12-27 | 2017-05-10 | 上海宝钢型钢有限公司 | Continuous production method and line for variable-thickness profile |
-
2017
- 2017-12-01 CN CN201711247928.XA patent/CN108144963B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6221404A (en) * | 1985-07-23 | 1987-01-29 | Kawasaki Steel Corp | Hot rolling method for three-layered stainless clad steel slab |
| JPS63260618A (en) * | 1987-04-16 | 1988-10-27 | Nippon Steel Corp | Rolling method for composite steel plate |
| CN103276328A (en) * | 2013-05-30 | 2013-09-04 | 济南大学 | Severe plastic deformation technology of magnesium alloy board |
| CN103611727A (en) * | 2013-11-19 | 2014-03-05 | 武汉钢铁(集团)公司 | Production method of composite variable-cross-section metal plate |
| CN103752611A (en) * | 2014-01-03 | 2014-04-30 | 北京科技大学 | Short-process efficient production method for metal-layered composite board strips |
| CN104858232A (en) * | 2015-05-25 | 2015-08-26 | 刘志民 | Preparation method for foam metal thickness difference sheet metal part |
| CN106623421A (en) * | 2016-12-27 | 2017-05-10 | 上海宝钢型钢有限公司 | Continuous production method and line for variable-thickness profile |
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