CN103021561A - Induction heating preparation process for copper-clad aluminum bus blank - Google Patents
Induction heating preparation process for copper-clad aluminum bus blank Download PDFInfo
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- CN103021561A CN103021561A CN2012104935201A CN201210493520A CN103021561A CN 103021561 A CN103021561 A CN 103021561A CN 2012104935201 A CN2012104935201 A CN 2012104935201A CN 201210493520 A CN201210493520 A CN 201210493520A CN 103021561 A CN103021561 A CN 103021561A
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Abstract
The invention relates to an induction heating preparation process for a copper-clad aluminum bus blank. The main requirement on the copper-clad aluminum bus blank is that a copper-aluminum interface is metallurgically bonded, and the metallurgical bonding layer is limited not to be thick, so that the copper-clad aluminum bus has good mechanical property and machining process performance. According to the technical scheme adopted by the process method, the process comprises the following steps of: performing one-pass drawing on a material formed by cladding a copper layer on an aluminum rod or inserting an aluminum rod in a copper tube, so that the copper layer and the surface of the aluminum rod are mechanically extruded together; and performing high-frequency induction heating. Due to the skin effect of high-frequency current, only the copper layer or the copper layer and nearby aluminum thin layer are heated to a certain temperature, the atomic diffusion energy on the copper-aluminum interface is increased, the energy is diffused to the opposite matrix, and the metallurgical bonding layer is formed. Compared with the conventional common solid-phase compounding method or solid-liquid compounding method, the process method has the advantages that the process is simple, the metal compound layer of the copper-aluminum binding interface is thin; and therefore, the manufactured copper-clad aluminum bus has high mechanical property and machining process performance.
Description
Technical field
The invention belongs to the manufacturing field of copper wrapped aluminum bus, it relates to a kind of technique for preparing the copper wrapped aluminum bus blank with induction heating method.
Background technology
Copper wrapped aluminum bus be a kind of take aluminium as core body, the bimetallic composite conductor material of its outer cladding copper layer.It is little, low-cost with high conductivity, chemical stability, the contact resistance of copper density little and aluminium, aboundresources comes together in one, reaches the purpose that reduces cost, " with aluminium joint copper ".At present, domestic oneself many institution of higher learning, research institution and factory and enterprise research and development are arranged and produce this novel conductor material.Production method is various, production technology is different.But come minute from the production technology of copper wrapped aluminum bus blank, mainly contain two kinds: Gu a kind of be solid-composite algorithm.Be about to copper pipe and coat aluminium bar, through multi pass drawing, the sectional shrinkage that produces more than 60% makes copper aluminium interface realize metallurgical binding; Another kind of solid-liquid composite algorithm.The aluminium liquid that is about to melting pours in the copper pipe, and root progressively is immersed in the water copper pipe and cools off with the liquid level of aluminium in casting process, and the width of control copper, aluminium atom phase diffusion layer is to guarantee the performance of metallurgical bonding layer.Topmost requirement is that metallurgical binding should be realized in copper aluminium interface to the copper wrapped aluminum bus blank, plays again the limiting metallurgy binder course can not be too wide, to guarantee copper wrapped aluminum bus good mechanical property and process industrial art performance is arranged.But above two kinds of blank-making technologies are existent defects all in this respect.Gu for solid-composite algorithm, no matter be copper layer metallized aluminum bar, or the aluminium bar inserts copper pipe, make copper aluminium interface realization metallurgical binding must pass through multi pass drawing.Because the size of copper wrapped aluminum bus is larger, its blank diameter must be thicker.Will carry out comparatively difficulty of its operation of multi pass drawing for the large scale blank, and productivity ratio is lower.For the solid-liquid composite algorithm, must accurately control the cooling time after aluminium liquid is poured copper pipe into, otherwise the In Crystal Solid Copper atom spreads in the liquid aluminium atom very easily, form thicker intermetallic compound (CuAl at the interface
2) layer, not only make copper layer attenuate, reduced copper layer volume ratio, and interface bond strength is reduced, and made the blank embrittlement and be difficult to processing.
Summary of the invention
The invention provides a kind of method that adopts induction heating to prepare the copper wrapped aluminum bus blank.
Concrete technical scheme is: a kind of technique for preparing the copper wrapped aluminum bus blank with induction heating method, and adopt copper layer metallized aluminum bar or aluminium bar to insert copper pipe by one drawing, the surperficial machinery of copper layer and aluminium bar is born against together.Then it is carried out high-frequency induction heating and water spray cooling continuously, make copper aluminium interface realize metallurgical binding.
Among the present invention, the feature of device therefor is: adopt high-frequency inductor to blank heating.Blank passes inductor and water spray ring is installed between two thimbles of quenching machine, and blank can be rotated along self axis, drives simultaneously blank and axially moves down.When blank when the inductor, make copper layer or the aluminium thin layer induction heating to 650 adjacent with the copper layer ℃-750 ℃, the thermal treatment zone moves down the water cooling that is sprayed in the water spray ring immediately, forms thinner copper aluminium atom diffusion bond layer.
Among the present invention, blank passes inductor and water spray ring is installed between two thimbles of quenching machine, and blank can be rotated along self axis, drives simultaneously blank and axially moves down.
Among the present invention, when blank when the inductor, make about copper layer or the aluminium thin layer induction heating to 700 adjacent with the copper layer ℃, the thermal treatment zone moves down the water cooling that is sprayed in the water spray ring immediately, forms thinner copper aluminium atom diffusion bond layer.
During operation: at first with the raw material of copper layer metallized aluminum bar or aluminium bar insertion copper pipe, by one drawing the surperficial machinery of copper layer and aluminium bar is born against together.Then it is carried out high-frequency induction heating.Because the skin effect of high-frequency current only makes copper layer and near aluminium thereof be heated to uniform temperature, increase the energy of atom diffusion on the copper aluminium interface, impel in the other side's matrix and spread, form metallurgical bonding layer; Perhaps make near the copper layer aluminium thin layer fusing by induction heating, accelerate the interatomic phase counterdiffusion of copper aluminium, impel both to combine by metallurgical interface.
Behind the induction heating, oneself realizes the copper wrapped aluminum bus blank of metallurgical binding to obtain copper aluminium interface, can make by rolling and drawing the copper wrapped aluminum bus of given size.
Characteristics of the present invention are that process is comparatively simple, and the Cu and Al combination layer width of the copper wrapped aluminum bus of producing is less, has preferably mechanical property and process industrial art performance.
Description of drawings
Fig. 1 prepares copper wrapped aluminum bus blank schematic diagram with induction heating.
Embodiment
Embodiment 1.
Now take the trial-production diameter as φ 64mm, length is that 3m, copper layer volume ratio are that 15% copper wrapped aluminum bus blank is example, and the technique that makes copper aluminium realization metallurgical binding on its interface with induction heating method be described.
1. preparation raw material: adopt the aluminium bar to insert the raw material of copper pipe.For the surperficial machinery that makes copper layer and aluminium bar bears against together, must be first it being carried out the cross section economy is about 20% drawing.For this reason, raw-material sectional dimension is increased.The external diameter that can calculate the raw material copper pipe according to the cross section economy is φ 72mm.Be 2.5mm according to the copper pipe wall thickness, can calculate aluminium bar external diameter is φ 67mm.Aluminium rod surface adopts the method cleaning that strips off the skin, and the amount of stripping off the skin is 0.25mm, and therefore, aluminium bar external diameter is got φ 67.5mm.The length of jaw when considering drawing, getting charge length is 3.2m.
2. raw-material cleaning and drawing: the jaw of first an end of copper pipe and aluminium bar being used when cross forging machine forges drawing.The copper pipe endoporus is with little steel wire rotary brush polish-brush, and copper pipe is placed in the argon shield case behind the polish-brush, blows away the copper powder that is attached on the tube wall with argon arc; Side at the argon shield case is laid slicing mould, and the aluminium bar is pushed slicing mould, strip off the skin directly to enter in the copper pipe afterwards, and the jaw gland that makes both together.
The argon shield case is placed on the chain drawbench, and it is φ 64mm drawing die that the jaw of blank is put into the nib aperture, carries out immediately drawing, and obtaining external diameter is the copper aluminium composite blank of φ 64mm.
3. copper aluminium composite blank is cut jaw, and another end-grain cutting is flat, and car goes out taper hole at the two ends center.Make it to pass inductor and water spray ring, be supported on Induction Hardening Machine upper and lower two top between, as shown in Figure 1.
Inductor access high frequency electric source, make the blank induction heating after the energising, the control power of power supply and lathe drive the speed that blank moves, and make copper layer or copper layer and adjacent aluminium thin layer be heated to (width of the thermal treatment zone is shown in blank picture dotted portion among Fig. 1) about 700 ℃.The thermal treatment zone moves down the water cooling that is sprayed in the water spray ring immediately.Among the copper that blank is processed through induction heating, aluminium atom diffusion bond district thin layer Fig. 1 shown in the thick black line.In the process that quenching machine drive blank constantly moves down, make each position of blank all stand inductor heating and cooling process, thereby make whole blank all reach the purpose of metallurgical binding.In order to make blank along each position homogeneous heating of circumference, quenching machine also drives blank and rotates along self axis.
Copper aluminium oneself realize the copper wrapped aluminum bus blank of metallurgical binding, make again the copper wrapped aluminum bus of given size through rolling and drawing.
The present invention is described by embodiment, and those skilled in the art know, in the situation that do not break away from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under guidance of the present invention, can make amendment to adapt to concrete situation and material to these features and embodiment and can not break away from the spirit and scope of the present invention.Therefore, the present invention is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiment of claim scope that fall into the application belong to protection scope of the present invention.
Claims (2)
1. the induction heating preparation technology of a copper wrapped aluminum bus blank is characterized in that: pass through one drawing after adopting copper layer metallized aluminum bar or aluminium bar to insert copper pipe, the surperficial machinery of copper layer and aluminium bar is born against together; Then it is carried out high-frequency induction heating and water spray cooling continuously, make copper aluminium interface realize metallurgical binding.
2. the induction heating preparation technology of copper wrapped aluminum bus blank according to claim 1 is characterized in that: adopt high-frequency inductor to blank heating; Blank passes inductor and water spray ring is installed between two thimbles of quenching machine, and blank can be rotated along self axis, drives simultaneously blank and axially moves down; When blank when the inductor, make copper layer or the aluminium thin layer induction heating to 650 adjacent with the copper layer ℃-750 ℃, the thermal treatment zone moves down the water cooling that is sprayed in the water spray ring immediately, forms thinner copper aluminium atom diffusion bond layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104935201A CN103021561A (en) | 2012-11-28 | 2012-11-28 | Induction heating preparation process for copper-clad aluminum bus blank |
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| CN2012104935201A CN103021561A (en) | 2012-11-28 | 2012-11-28 | Induction heating preparation process for copper-clad aluminum bus blank |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691910A (en) * | 2014-01-07 | 2014-04-02 | 北京科技大学 | Preparation method of aluminum-coated magnesium composite plate material |
| CN108141926A (en) * | 2015-09-25 | 2018-06-08 | 康讯公司 | It is preheated for the large-scale blank electric induction of heat processing technique |
| CN109047727A (en) * | 2018-10-09 | 2018-12-21 | 鞍钢股份有限公司 | A kind of device and method manufacturing metallurgical composition metal blank |
| CN110920214A (en) * | 2019-12-17 | 2020-03-27 | 河南科技大学 | Preparation method of copper-aluminum laminated composite material |
| CN116479272A (en) * | 2023-05-11 | 2023-07-25 | 扬州亚光电缆有限公司 | Light copper-clad aluminum alloy material, preparation method thereof and application thereof in aerospace high-current cable assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008523570A (en) * | 2005-04-28 | 2008-07-03 | 傅氏国際（大連）双金属線纜有限公司 | Manufacturing method of copper clad aluminum bus |
| CN101577150A (en) * | 2009-06-10 | 2009-11-11 | 张家港市盛天金属线有限公司 | Process for semi-solid state continuous forming of heavy cross section conducting copper-clad aluminum wire |
| CN102071289A (en) * | 2011-01-19 | 2011-05-25 | 常州华冶恒基轧辊机械有限公司 | Double-frequency surface quenching device |
| CN102527768A (en) * | 2010-12-08 | 2012-07-04 | 江苏兴荣高新科技股份有限公司 | Manufacturing method of copper-clad aluminum pipe |
-
2012
- 2012-11-28 CN CN2012104935201A patent/CN103021561A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008523570A (en) * | 2005-04-28 | 2008-07-03 | 傅氏国際（大連）双金属線纜有限公司 | Manufacturing method of copper clad aluminum bus |
| CN101577150A (en) * | 2009-06-10 | 2009-11-11 | 张家港市盛天金属线有限公司 | Process for semi-solid state continuous forming of heavy cross section conducting copper-clad aluminum wire |
| CN102527768A (en) * | 2010-12-08 | 2012-07-04 | 江苏兴荣高新科技股份有限公司 | Manufacturing method of copper-clad aluminum pipe |
| CN102071289A (en) * | 2011-01-19 | 2011-05-25 | 常州华冶恒基轧辊机械有限公司 | Double-frequency surface quenching device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691910A (en) * | 2014-01-07 | 2014-04-02 | 北京科技大学 | Preparation method of aluminum-coated magnesium composite plate material |
| CN108141926A (en) * | 2015-09-25 | 2018-06-08 | 康讯公司 | It is preheated for the large-scale blank electric induction of heat processing technique |
| CN109047727A (en) * | 2018-10-09 | 2018-12-21 | 鞍钢股份有限公司 | A kind of device and method manufacturing metallurgical composition metal blank |
| CN109047727B (en) * | 2018-10-09 | 2020-07-17 | 鞍钢股份有限公司 | Method for manufacturing metallurgical composite metal blank |
| CN110920214A (en) * | 2019-12-17 | 2020-03-27 | 河南科技大学 | Preparation method of copper-aluminum laminated composite material |
| CN116479272A (en) * | 2023-05-11 | 2023-07-25 | 扬州亚光电缆有限公司 | Light copper-clad aluminum alloy material, preparation method thereof and application thereof in aerospace high-current cable assembly |
| CN116479272B (en) * | 2023-05-11 | 2023-10-31 | 扬州亚光电缆有限公司 | Light copper-clad aluminum alloy material, preparation method thereof and application thereof in aerospace high-current cable assembly |
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Application publication date: 20130403 |