CN103599937A - Metallurgical compound technology for copper aluminum bimetal strip - Google Patents
Metallurgical compound technology for copper aluminum bimetal strip Download PDFInfo
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- CN103599937A CN103599937A CN201310501987.0A CN201310501987A CN103599937A CN 103599937 A CN103599937 A CN 103599937A CN 201310501987 A CN201310501987 A CN 201310501987A CN 103599937 A CN103599937 A CN 103599937A
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Abstract
The invention discloses a metallurgical compound technology for a copper aluminum bimetal strip. After an aluminum ingot is completely melted into molten aluminum, the molten aluminum flows into a compound region after standing by a standing furnace, online degassing and filtering, a roller and a copper strip are continuously dehumidified by hot air in the compound region, the temperature of the roller and the copper strip is kept at 150-200 DEG C in compounding, and the copper strip and the molten aluminum are rolled by a rolling mill to form the metallurgical compounded copper aluminum bimetal compound strip. The roller and the copper electronic framework (with the mark: TPO/H65/c19210/c19400/Lc7025) strip are continuously blown and baked by the high-pressure hot air in the compound region of the copper strip and the molten aluminum, and the temperature of the roller and the copper strip is kept at 150-200 DEG C, so that water vapor and oxidation are avoided in compounding, water molecules are prevented from condensing on a copper aluminum compound interface and forming bubbles, and the post processing quality of the copper aluminum bimetal strip is ensured. By adding 0.2-0.5% of aluminum titanium boron wires into the molten aluminum, copper aluminum metal molecules are metallurgically bonded. The problems of cracking, breaking, layering, falling-off and the like in post deep processing are thoroughly solved, the rate of finished products can reach more than 85-97%, and production cost is reduced.
Description
Technical field
The invention belongs to Cu-Al bimetal complex plate strip production technical field, be specifically related to a kind of Cu-Al bimetal strip
Metallurgical combination process.
Technical background
Along with scientific and technical develop rapidly, by various different methods of attachment, different metal material is complex as a whole, be prepared into composite metal plate, obtain physics, chemical property and mechanical characteristic that single-layer metal material does not have, meet the requirement of the performances such as high strength, high specific stiffness, fatigue resistance, dimensionally stable, wear-resisting, antivibration, can save rare your material, reduce costs simultaneously.Therefore, develop novel metal composite and there is very urgent realistic meaning, also will bring significant economic benefit and social benefit.
Metallic composite be by two or more metal through a kind of new material compound and that form, due to the advance of its technique and the technical characteristic of material itself, thereby composite board has advantages of that single metal material of planting is incomparable.Copper aluminium complex copper electronic frame (trade mark: TPO/H65/c19210/c19400/Lc7025) strip is a kind of novel composite, it had both kept the performances such as the conduction, heat conduction of copper, corrosion-resistant, high strength; Lightweight, extensibility, corrosion resistance and the advantage such as with low cost of aluminium have been taken into account again simultaneously.The fields such as electronic large power tube frame, LED have been widely used in.
At present, the compound production method of copper aluminium has a variety of, traditional have the methods such as explosive welding, soldering, friction welding (FW), flash welding, solid-state-semisolid, cold rolling, hot rolling to produce, although these methods cut both ways, but the copper aluminum composite belt plate of producing all in various degree exist adhesion not strong, easily layering, fracture, peeling, yield rate is low, the problem that cost is higher.Casting and roll process is the method for current comparatively ideal production of copper aluminum composite panel belt, and this method is that casting and rolling are combined, existing liquid phase high temperature, there is again draught pressure, can realize higher combined strength bination, owing to producing continuously, effectively improve that productivity ratio is high, to have reduced cost low.But, this method is subject to the impact of air humidity larger in process of production, when air humidity is greater than 40%, be difficult to carry out two-sided compound, when humidity reaches 60%, almost can not carry out again compound, even if carried out compound, because hydrone at high temperature can expand rapidly, and form bubble at the compound interface of copper aluminium, and affect bond strength, in the processing in later stage, still can there is the problems such as the easy layering foaming of punching, cracking during bending come off in the copper-aluminum composite board band of production.For solving air humidity, combined strength bination is affected, the measure adopting is at present to utilize jet-propelled liquefied gas shower nozzle to carry out Baking out to rolling rod surface, but because it only carries out Baking out to rolling rod, and complex plate strip strip is not carried out to Baking out, owing to rolling the temperature difference existing between rod and copper plate/strip, still can make airborne hydrone condense in the compound interface formation bubble of copper aluminium, therefore this Baking out mode has certain limitation, can not fundamentally eliminate the bubble problem of copper aluminium compound interface.In addition, this casting and roll process is semi-solid aluminum or aluminum alloy and In Crystal Solid Copper strip to be carried out to continuous casting and rolling make, between two kinds of metallic molecules, can not realize metallurgical binding, the copper aluminum composite belt plate of producing sometimes also there will be the defects such as a minute pull-up splits, bending fracture in the deep processing in later stage, affects yield rate and the production cost of product.
Summary of the invention
The object of the invention is to propose a kind of metallurgical combination process of Cu-Al bimetal strip.Solved the problem that copper aluminium compound interface bond strength is low, cannot realize metallurgical binding, reached and improve Cu-Al bimetal combined strength bination, real
Existing metallurgical binding, guarantees the quality of product when later stage deep processing and yield rate, the object reducing production costs.
The present invention realizes the technical scheme that above-mentioned purpose takes: a kind of metallurgical combination process of Cu-Al bimetal strip
Be that aluminium ingot is molten into after aluminium liquid completely, after standing, the online degasification of standing furnace, filtration, flow into recombination region, and
Recombination region dehumidifies with hot blast breaker roll and copper plate/strip, and roll and copper strips are remained in the temperature of compound tense
150-200 ℃, and by milling train, copper plate/strip and aluminium liquid are rolled out to metallurgical compound Cu-Al bimetal complex plate strip.
The present invention, before described aluminium liquid flows into recombination region, adds the aluminium titanium boron wire of 0.2-0.5% in aluminium liquid.
The time of repose of aluminium liquid of the present invention is 10-16 second.
Be 1.3-1.6 second the time of contact of copper plate/strip of the present invention and aluminium liquid.
The rolling time of copper plate/strip of the present invention and aluminium liquid is 6-8 second.
The mill speed of copper plate/strip of the present invention and aluminium liquid is 400mm-1320mm per minute.
The roll-force of copper plate/strip of the present invention and aluminium liquid is 1510-1550KN.
The fusion degree of depth >=the 0.01mm of copper plate/strip of the present invention and aluminium liquid.
Copper plate/strip of the present invention is frontly carrying out deoxidation processing to its composite surface with aluminium liquid is compound.
The present invention carries out with high-pressure hot wind breaker roll and copper plate/strip by the recombination region at copper plate/strip and aluminium liquid continuously
Blow roastingly, and make the temperature on copper strips and roll remain on 150-200 ℃, when the temperature of copper strips and roll is higher than 200
℃ time, there will be oxidative phenomena; When the temperature of copper strips and roll is during higher than 150 ℃, do not reach dry object.
Make thus copper plate/strip and aluminium liquid can not produce steam and form oxidation at compound tense, avoided hydrone to condense in copper aluminium
Compound interface forms bubble impact in conjunction with bond strength, has guaranteed the post-production quality of product.Owing to adding 0.2-0.5% aluminium titanium boron wire (grain refiner) in aluminium liquid, fining agent enters the aluminum alloy melt of needed refinement equably, thus the even tissue after refinement, without the staggered mixed crystal district of thickness crystal grain, the intensity and the percentage elongation that have greatly improved alloy, reduced the waste products such as crackle; Avoid the caused dross being mingled with smelting furnace of sedimentation, the aggegation of TiAl3 and TiB2, reduced the workload of prepurging and prepurging; Realized micronization processes automation unmanned, economized people and save trouble; Micronization processes and aluminium alloy setting time are shortened dramatically, improved production efficiency.Cracking, fracture, layering while thoroughly having solved later stage deep processing, the phenomenon such as come off, can reach more than 80% yield rate, effectively improves yield rate, reduced production cost.
The specific embodiment
Embodiment 1
The present embodiment is the metallurgical combination process of the compound Cu-Al bimetal strip of individual layer, and concrete steps are as follows:
Aluminium ingot is put into smelting furnace and melt, by after in the aluminium liquid inflow standing furnace after melting completely standing 13 minutes, after online degasification, filtration, flow into chute and enter recombination region.Meanwhile, adopt hot blast to blowing continuously roastingly with rolling, the temperature of copper plate/strip and roll is controlled between 150-200 ℃.High-pressure hot wind is provided by outside, and air outlet is arranged on the movement locus of copper plate/strip and roll, and object is that copper plate/strip and roll are kept dry in recombination region, makes its surface can not form steam and oxidation.Copper plate/strip (thickness≤1.5mm) directly contacts with aluminium liquid through deflector roll, utilize in the 1.3 second time that temperature of aluminum liquid combines at the two, form the micro-fusing of copper strip surface, the fusion degree of depth >=0.01mm, after template distributor, topping roll machine is rolled, in mill speed, be 1300mm per minute, roll-force is under 1510KN, rolling time be 6 second lower moment copper aluminum metal surface molecular interpenetrate fusion, directly continuous rolling goes out the double-side copper Al bimetal complex plate strip that thickness is 3.0mm.In order further to improve the intensity of stainless steel aluminum composite panel belt, before aluminium liquid flows into recombination region, in aluminium liquid, add aluminium titanium boron wire (grain refiner).Aluminium titanium boron wire (SX-A1-Ti-B titaniferous 5%, boracic 1%) is a kind of grain refiner, plays the effect that improves aluminium alloy melt interior tissue, crystal grain thinning.The present embodiment is in aluminium spout, to add the aluminium titanium boron wire of 0.2-0.5%, utilizes the temperature of aluminium liquid to make its fusing, impels titanium-aluminium alloy to belong to the mutual micro-infiltration that forms two kinds of metallic molecules in the moment of combination, reaches metallurgical compound object.
Embodiment 2
The present embodiment is the metallurgical combination process of the Cu-Al bimetal strip of two-layer compound, and concrete steps are as follows:
Aluminium ingot is put into natural gas smelting furnace and melt, by after in the aluminium liquid inflow standing furnace after melting completely standing 15 minutes, after online degasification, filtration, flow into chute and enter recombination region.Meanwhile, adopt high-pressure hot wind breaker roll and copper plate/strip to blow continuously roasting, the temperature of copper strips and roll is controlled between 150 ~ 200 ℃.High-pressure hot wind is provided by outside, and air outlet is arranged on roll and copper plate/strip carries out on continuous movement locus, and object is that copper plate/strip and roll are kept dry in recombination region, makes its surface can not form steam and oxidation.Copper plate/strip is that two-layer (thickness is 0.5-1.5mm) directly contacts with aluminium liquid through deflector roll, utilize in the 1.6 second time that temperature of aluminum liquid combines at the two, form the micro-fusing of copper strip surface, the fusion degree of depth >=0.01mm, after template distributor, topping roll machine is rolled, in mill speed, be 400mm per minute, roll-force is under 1550KN, rolling time be 6 second lower moment copper aluminum metal surface molecular interpenetrate fusion, directly continuous rolling goes out the double-side copper Al bimetal complex plate strip that thickness is 3.0mm.In order further to improve the intensity of stainless steel aluminum composite panel belt, before aluminium liquid flows into recombination region, in aluminium liquid, add aluminium titanium boron wire (grain refiner).Aluminium titanium boron wire (SX-A1-Ti-B titaniferous 5%, boracic 1%) is a kind of grain refiner, plays the effect that improves aluminium alloy melt interior tissue, crystal grain thinning.The present embodiment is in aluminium spout, to add the aluminium titanium boron wire of 0.2-0.5%, utilizes the temperature of aluminium liquid to make its fusing, impels titanium-aluminium alloy to belong to the mutual micro-infiltration that forms two kinds of metallic molecules in the moment of combination, reaches metallurgical compound object.
Claims (9)
1. a metallurgical combination process for Cu-Al bimetal strip, is characterized in that: aluminium ingot is molten into aluminium liquid completely
After, after standing, the online degasification of standing furnace, filtration, flow into recombination region, and with hot blast breaker roll and copper plate/strip, carry out continuous dehumidifying at recombination region, make roll and copper strips remain on 150-200 ℃ in the temperature of compound tense, and by milling train, copper plate/strip and aluminium liquid are rolled out to metallurgical compound Cu-Al bimetal complex plate strip.
2. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: in institute
State aluminium liquid and flow into before recombination region, in aluminium liquid, add the aluminium titanium boron wire of 0.2-0.5%.
3. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: described in
The time of repose of aluminium liquid is 12-16 second.
4. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: described in
Be 1.3-1.6 second the time of contact of copper plate/strip and aluminium liquid.
5. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: described in
The rolling time of copper plate/strip and aluminium liquid is 6-8 second.
6. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: the mill speed of described copper plate/strip and aluminium liquid is 400mm-1320mm per minute.
7. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: the roll-force of described copper plate/strip and aluminium liquid is 1510-1550KN.
8. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: the fusion degree of depth >=0.01mm of described copper plate/strip and aluminium liquid.
9. the metallurgical combination process of Cu-Al bimetal strip according to claim 1, is characterized in that: described copper plate/strip is frontly carrying out deoxidation processing to its composite surface with aluminium liquid is compound.
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| CN201310501987.0A CN103599937A (en) | 2013-10-23 | 2013-10-23 | Metallurgical compound technology for copper aluminum bimetal strip |
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| CN201310501987.0A CN103599937A (en) | 2013-10-23 | 2013-10-23 | Metallurgical compound technology for copper aluminum bimetal strip |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934266A (en) * | 2014-04-11 | 2014-07-23 | 东北大学 | Copper/aluminum composite belt manufacturing method capable of thinning boundary layer |
| CN110190422A (en) * | 2019-05-28 | 2019-08-30 | 浙江彼岸电气有限公司 | Wire clamp of copper-aluminum apparatus and its manufacture craft |
| CN111282991A (en) * | 2020-02-21 | 2020-06-16 | 洛阳铜一金属材料发展有限公司 | Preparation method of copper-aluminum composite plate strip with thick copper layer proportion |
| CN113927001A (en) * | 2021-08-23 | 2022-01-14 | 陈正华 | Copper-aluminum composite plate strip and preparation method and device thereof |
| CN114101332A (en) * | 2021-11-19 | 2022-03-01 | 河南铜创有色金属科技有限公司 | Method and device for manufacturing copper-aluminum composite strip by using solid copper and liquid aluminum |
| CN118117424A (en) * | 2024-04-29 | 2024-05-31 | 温州永普金具有限公司 | Manufacturing method of copper-aluminum wiring terminal and copper-aluminum wiring terminal |
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| KR20010064994A (en) * | 1999-12-20 | 2001-07-11 | 이구택 | Method For Manufacturing Clad Steel Plate Using Strip Caster |
| CN101797583A (en) * | 2010-01-25 | 2010-08-11 | 洛阳铜一金属材料发展有限公司 | Preparation method for aluminum-stainless steel clad metal plate and strip |
| CN102088070A (en) * | 2010-10-29 | 2011-06-08 | 曹建礼 | Instant heating device for pole piece of battery pole piece rolling mill |
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Patent Citations (4)
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| KR20010064994A (en) * | 1999-12-20 | 2001-07-11 | 이구택 | Method For Manufacturing Clad Steel Plate Using Strip Caster |
| CN101797583A (en) * | 2010-01-25 | 2010-08-11 | 洛阳铜一金属材料发展有限公司 | Preparation method for aluminum-stainless steel clad metal plate and strip |
| CN102088070A (en) * | 2010-10-29 | 2011-06-08 | 曹建礼 | Instant heating device for pole piece of battery pole piece rolling mill |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934266A (en) * | 2014-04-11 | 2014-07-23 | 东北大学 | Copper/aluminum composite belt manufacturing method capable of thinning boundary layer |
| CN110190422A (en) * | 2019-05-28 | 2019-08-30 | 浙江彼岸电气有限公司 | Wire clamp of copper-aluminum apparatus and its manufacture craft |
| CN111282991A (en) * | 2020-02-21 | 2020-06-16 | 洛阳铜一金属材料发展有限公司 | Preparation method of copper-aluminum composite plate strip with thick copper layer proportion |
| CN113927001A (en) * | 2021-08-23 | 2022-01-14 | 陈正华 | Copper-aluminum composite plate strip and preparation method and device thereof |
| CN114101332A (en) * | 2021-11-19 | 2022-03-01 | 河南铜创有色金属科技有限公司 | Method and device for manufacturing copper-aluminum composite strip by using solid copper and liquid aluminum |
| CN118117424A (en) * | 2024-04-29 | 2024-05-31 | 温州永普金具有限公司 | Manufacturing method of copper-aluminum wiring terminal and copper-aluminum wiring terminal |
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Application publication date: 20140226 |