CN100508077C - Novel copper coated aluminum bus row and its preparing method - Google Patents
Novel copper coated aluminum bus row and its preparing method Download PDFInfo
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- CN100508077C CN100508077C CNB200610124127XA CN200610124127A CN100508077C CN 100508077 C CN100508077 C CN 100508077C CN B200610124127X A CNB200610124127X A CN B200610124127XA CN 200610124127 A CN200610124127 A CN 200610124127A CN 100508077 C CN100508077 C CN 100508077C
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Abstract
This invention discloses a new type of Cu-Al bus and its preparation method, which covers the surface of aluminum plate with a copper material and rolls it to realize metallurgy combination of the two interfaces including preprocessing the surface of an Al plate and a Cu material and carrying out composite rolling 0f non-equal temperature finally to roll the edge, in which, the copper thickness is 3-10% of the total.
Description
Technical field
The present invention relates to the metallic composite machine-shaping technology that a kind of power transmission and distribution are used, particularly a kind of novel copper coated aluminum bus row preparation method.
Background technology
As far back as the 1950's, industrially developed country such as Germany, the U.S., the former Soviet Union invent various distinct methods in succession and produce cuprum-cladding-aluminium composite wire, and obtain to use widely in the high-frequency transmission field.The nineties in 20th century, Germany adopts quiet liquid extrusion to produce composite copper bar with aluminium core.It is a kind of special lubricated extrusion process, and basic principle is that the composite blank that major diameter red copper pipe and fine aluminium rod base is made is obtained composite copper bar through quiet liquid extruding, utilizes high hydrostatic pressure and processes the deformation rate effect greatly and realize metallurgical binding between copper, the aluminium.Above-mentioned technology device therefor complexity, technical difficulty is big, production cost is high, efficient is low, so applying of this technology is subjected to very big restriction.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of good conductivity, light specific gravity, cost is low, preparation technology is simple, production efficiency is high novel copper coated aluminum bus row preparation method are provided.
The preparation method of a kind of novel copper coated aluminum bus row of the present invention is covered in aluminium central layer outer surface with copper material, and by the metallurgical binding between both interfaces of rolling realization.
Milling method specifically comprises following three steps:
A: aluminium central layer to be processed and copper material are carried out surface preparation;
B: will carry out not isothermal composite rolling through the aluminium central layer and the copper material of surface preparation;
C: rolling to carry out bound edge through the composite plate blanks behind the isothermal composite rolling not.
Above-mentioned surface preparation is that aluminium central layer to be processed and copper material are carried out degreasing, brushing or both combination processing.
Above-mentioned not isothermal composite rolling is that the aluminium central layer is heated to 150 ℃～450 ℃, and copper material does not heat and is rolled.
Described twice rolling rate of pressing down always is 60%～80%.
Described copper material is copper strips or copper pipe.
A kind of novel copper coated aluminum bus row, the copper layer that comprises the aluminium central layer and be covered in its outer surface constitutes, and described copper layer thickness is 3～10% of a gross thickness.
Described aluminium central layer is A100 series fine aluminium or the aluminium that contains trace rare-earth element; Described copper layer is conduction good fine copper or copper alloy.
Described aluminium central layer is a bandlet.
The copper coated aluminum bus row that utilizes preparation method of the present invention to produce, the faying face of copper and aluminium is realized metallurgical binding, the bond strength height, the lumber recovery height, and have good electric conductivity, and also production cost is low, production efficiency is high, and preparation technology is simple.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The preparation method of novel copper coated aluminum bus row of the present invention is covered in aluminium central layer outer surface with copper material and realizes metallurgical binding between the interface by rolling method, and this copper material is meant copper strips or copper pipe.Milling method is specific as follows: the first step, aluminium central layer to be processed and copper strips are carried out preliminary treatment.In the present embodiment, aluminium central layer to be processed is called aluminum slab.At first, choose the aluminum slab and the copper strips of certain size according to the specification requirement of product, then respectively to the aluminum slab surface do degreasing, mechanical brushing, shot-peening or three kinds of methods in conjunction with handling, online brusher mill is made on the surface of copper strips is handled.In second step, will carry out not isothermal composite rolling through the aluminum slab and the copper strips of surface preparation.Earlier aluminum slab is heated to 150 ℃～450 ℃, and copper strips does not heat, sends into milling train after overlapping then the aligning together and carries out not isothermal composite rolling.Realized tentatively being combined into composite plate blanks through aluminum slab after the not ausrolling and copper strips.The 3rd step, rolling to carry out bound edge through the composite plate blanks behind the isothermal composite rolling not.Sending into the milling train with profiling roll after the composite plate blanks of realizing preliminary combination heated again, to carry out second time bound edge rolling, and twice rolling rate of pressing down always is 60%～80%.
Novel copper coated aluminum bus row with above-mentioned preparation method's production, as Fig. 1, constitute by aluminium central layer 1 and the copper layer 2 that is covered in aluminium central layer 1 outer surface, the thickness of copper layer 2 is 3～10% of gross thickness, aluminium central layer 1 is A100 series fine aluminium or the aluminium that contains trace rare-earth element, and aluminium central layer 1 can be a bandlet; Copper layer 2 is conduction good fine copper or copper alloy.
When processing the novel copper coated aluminum bus row of 8 * 80mm as need, choose the aluminum slab and the copper strips (or copper pipe) of certain size earlier, degreasing, mechanical brushing or both combinations are carried out in the aluminum slab surface handle, after surface preparation, heat, and deliver to milling train by roller-way; The copper strips volume is delivered to milling train respectively after devices such as upper and lower uncoiler, brush machine are handled.Through the copper strips after the surface preparation with aluminum slab is overlapping sends milling train together to after aligning and carry out not ausrolling, cover the aluminum composite plate base to obtain preliminary copper.At last composite plate blanks is heated again, it is rolling to carry out bound edge with the milling train with profiling roll, just can obtain one or more required thickness is 8mm, width is the novel copper coated aluminum bus row of 80mm, prepared novel copper coated aluminum bus row need not to carry out diffusion annealing and handles, technology is simple and easy, production efficiency is high, has good conductivity, and the superiority of its performance can see Table one, table two.
Table one: novel copper coated aluminum bus row performance table
| Sequence number | Project | Unit or symbol | Standard-required | Measured value | Judge | Method of testing |
| 1 | Resistivity | ρ20℃ | 0.02575～ 0.271 | 0.02575～ 0.271 | Meet | GB/T3048.2 |
| 2 | Temperature rise limit | Ambient temperature | <65(k) | <60(k) | Meet | GB7251.1 |
| 3 | Ampacity | Ambient temperature | Optional | 250～ 5000A | Meet | GB7251.1 |
| 4 | Surface chemistry stability | Identical with copper | Optional | Meet | GB/T2423.17 GB/T2423.3 GB/T9789 |
Table two: copper coated aluminum bus row and copper bus-bar, aluminium bus array performance index
| Title | Bend test | State | Resistivity | Mechanical property | Density | Ampacity | Temperature rise | Contact resistance and surface chemistry stability | Comprehensive dynamo-electric cost performance | The fabricating yard requirement | Financial cost and market application feature |
| Copper coated aluminum bus row | Q/ (G Z) AB C7-20 06 is qualified | Firmly | 0.02 575 0.02 71 | 170 Mpa | 3.01 ～3.6 | Optional | Well | Well | Well | In light weight, easy for installation | Cost is low, market is widely used |
| Aluminium bus array | GB/T 3385. 2 is qualified | Firmly | 0.02 90 | 118 Mpa | 2.73 | Optional | Well | Difference | Generally | In light weight, easy for installation | Cost is low, market is used few |
| Copper bus-bar | GB/T 3385. 1 | Firmly | 0.01 72～ 0.01 777 | 206 Mpa | 8.9 | Optional | Well | Well | Good | Heavy Weight, installation inconvenience | Cost height, market are widely used |
Claims (4)
1, a kind of preparation method of novel copper coated aluminum bus row is characterized in that: milling method specifically comprises following three steps:
A: aluminium central layer to be processed and copper material are carried out surface preparation;
B: surface treated aluminium central layer and copper material are carried out not isothermal composite rolling, be about to the aluminium central layer and be heated to 150 ℃～450 ℃, copper material does not heat and is rolled;
C: rolling to carry out bound edge through the composite plate blanks behind the isothermal composite rolling not.
2, the preparation method of novel copper coated aluminum bus row according to claim 1 is characterized in that: described surface preparation is that aluminium central layer to be processed and copper material are carried out degreasing, brushing or both combination processing.
3, the preparation method of novel copper coated aluminum bus row according to claim 1 is characterized in that: twice rolling rate of pressing down always is 60%～80%.
4, the preparation method of novel copper coated aluminum bus row according to claim 1 is characterized in that: described copper material is copper strips or copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610124127XA CN100508077C (en) | 2006-12-11 | 2006-12-11 | Novel copper coated aluminum bus row and its preparing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610124127XA CN100508077C (en) | 2006-12-11 | 2006-12-11 | Novel copper coated aluminum bus row and its preparing method |
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| Publication Number | Publication Date |
|---|---|
| CN1988059A CN1988059A (en) | 2007-06-27 |
| CN100508077C true CN100508077C (en) | 2009-07-01 |
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| CNB200610124127XA Expired - Fee Related CN100508077C (en) | 2006-12-11 | 2006-12-11 | Novel copper coated aluminum bus row and its preparing method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169987B (en) * | 2007-12-04 | 2010-08-18 | 北京科技大学 | Copper cladded aluminum composite thin flat wire and its preparation method |
| CN102103906B (en) * | 2009-12-21 | 2012-07-11 | 北京有色金属研究总院 | Method for preparing copper-coated aluminium composite material |
| CN101894600B (en) * | 2010-07-08 | 2012-07-04 | 烟台孚信达双金属股份有限公司 | Process for preparing copper-clad aluminum laminated busbar |
| CN102231293B (en) * | 2011-06-20 | 2012-10-03 | 徐志峰 | Copper-coated rear earth aluminum alloy flat wire or flat cable and manufacturing method thereof |
| CN103413592B (en) * | 2013-02-21 | 2016-06-29 | 罗志昭 | A kind of manufacture method of the rectangular conductor of big current-carrying capacity low-temperature-rise |
| CN105792955B (en) * | 2013-09-21 | 2018-09-18 | 应用复合材料有限公司 | The isothermal state method preparation process and system of copper aluminum composite material |
| CN111462938B (en) * | 2020-04-17 | 2021-09-14 | 珠海蓉胜超微线材有限公司 | Copper-coated carbon nano composite flat wire and preparation method thereof |
| CN114472520B (en) * | 2021-12-21 | 2024-06-25 | 西安理工大学 | Method for preparing aluminum/copper/aluminum bimetal composite plate rolling assembly |
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2006
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