CN101465171A - Method for making copper dural alclad bus-bar row continuously through coating, welding and rolling - Google Patents
Method for making copper dural alclad bus-bar row continuously through coating, welding and rolling Download PDFInfo
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- CN101465171A CN101465171A CNA2007101511875A CN200710151187A CN101465171A CN 101465171 A CN101465171 A CN 101465171A CN A2007101511875 A CNA2007101511875 A CN A2007101511875A CN 200710151187 A CN200710151187 A CN 200710151187A CN 101465171 A CN101465171 A CN 101465171A
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Abstract
The invention relates to a method for manufacturing copper clad aluminum bus bar through clad welding and rolling, which is characterized in that a process of copper strips cladding copper bar is continuously performed under gas shielding, the specific method comprises the following steps: cleaning; bus bar blank manufacturing; diameter reducing by cold drawing; stretching by heating and roll compacting and annealing. The invention has the advantages that conductors for securing metallurgical combined entirety are formed on the two metal interfaces through diffusing heat treatment of two materials and one or two elongating rolling. By adopting clad welding, diameter reducing, heating and roll compacting continuous finishing process, the production rate is improved greatly, the process time is shortened; and the quality is ensured. Because preprocessing mechanical scrubbing is finished during clad welding, the brush graining process is simplified, thereby facilitating dust treatment. By adopting the continuous production, the requirements of users for long line can be met.
Description
Technical field
The invention belongs to the bus row of electric power system, relate in particular to the method for a kind of clad welded and rolling continuous making copper coated aluminum bus bank.
Background technology
The basic, normal, high copper busbar row who is press-fitted extensive use in the electric power systems such as electrical equipment, switch cubicle, control board, bus duct, vacuum switching device and generating set, rectifier, transformer, motor windings, bimetal joint, crane runway, it has advantage such as conduct electricity very well, ampacity is big, resistivity is little, mechanical strength is big, Corrosion Protection is good.But also there are simultaneously shortcomings such as cost height, Unit Weight are big, scarcity of resources, therefore on using, are very limited; Though fine aluminium bus row cost is low, its ampacity is little, easily close erosion, high-quality demand is not satisfied in the easy hydrogenation in contact place, performance.Research and develop a kind of copper coated aluminum bus bank at present in the industry and come instead of copper or the solid bus row of aluminium.The manufacture method first adopts quiet liquid extrusion, and productivity ratio is low excessively because hydraulic press costs an arm and a leg, and to having relatively high expectations of raw materials for production, can't produce in a large number; It two is to make for pulling method repeatedly, be to be welded into doubly than the big 7-8 of finished product sectional area by the argon arc welded tube mill. the round excellent blank of copper cover aluminum attenuates flat through ten to 20 times repeatedly stretching, reach two kinds of metal combinations completely always, total deformation will reach more than 87%, its shortcoming is that drawing numbers is too much, rate of finished products is low, quality be cannot say for sure card, manufacturability is poor, especially make very difficulty of 80 * 8 above sizes, so can not form large-scale production; Inventor's publication technology, its method is selection side aluminium row blank-welding rectangle copper pipe-cleaning-through once to twice roll compacting stretching-annealing, this kind technology through once or the reroll moulding can reach finished size, simplify technology and improved rate of finished products greatly.But this kind processing method needs the single-piece operation, can't realize continuous production, and manufacturing cost is higher.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology; and provide the method for a kind of clad welded and rolling continuous making copper coated aluminum bus bank; can be according to the needs of finished size; designing and calculating goes out copper cover aluminum blank dimension; under Buchholz protection, finish the process that continuous copper strips coats aluminium bar, can make two kinds of metal interfaces form the conductor of firm metallurgical combined.
The present invention for achieving the above object; by the following technical solutions: the method for a kind of clad welded and rolling continuous making copper coated aluminum bus bank; it is characterized in that: finish the process that copper strips coats aluminium bar under Buchholz protection continuously, the concrete manufacture method of its cuprum alclad rectangular bus bar comprises the steps:
A, cleaning: the surface of copper strips and aluminium bar degreased respectively scrub;
B, bus row blank are made: according to the needs of finished size, designing and calculating goes out copper cover aluminum blank dimension, adopt the private volume carrying device that copper strips is coated along the aluminium bar long axis direction, under argon shield by making the copper cover aluminum blank after the abutment joint surface soldered of argon arc welding machine to copper strips;
C, cold-drawn undergauge: go the oxide skin of clean welding back copper strips, adopt conventional cold-draw equipment to dwindle the copper cover aluminum blank diameter;
D, heating, roll compacting stretch: under the 300-800 ℃ of temperature conditions, to the heating of copper cover aluminum blank, carry out once also stretching to twice warm-rolling, eliminate copper aluminium bonding gap, can roll into the cuprum alclad rectangular bus bar of different size;
E, annealing: according to the soft or hard degree of technical requirements of users, annealing process is annealed routinely.
Beneficial effect of the present invention: extend to reroll by one again by two kinds of diffuse heat treatments of copper aluminium, can make two kinds of metal interfaces form the conductor of firm metallurgical combined.Adopt clad welded, undergauge, heat, roll compacting finishes technology continuously, boosts productivity greatly, shortens the process time, guarantees quality.Because it is to finish simultaneously in clad welded that pre-treatment machinery is scrubbed, simplify brushing technology, make things convenient for dust to handle.Adopt continuously and produce, can satisfy requirements of users for long line.
Embodiment
The method of a kind of clad welded and rolling continuous making copper coated aluminum bus bank is finished the process that copper strips coats aluminium bar continuously under Buchholz protection, the concrete manufacture method of its cuprum alclad rectangular bus bar comprises the steps:
A, cleaning: adopt mechanical system that the surface of copper strips and aluminium bar is degreased respectively and scrub;
B, bus row blank are made: according to the needs of finished size, designing and calculating goes out copper cover aluminum blank dimension, adopt the private volume carrying device that copper strips is coated along the aluminium bar long axis direction, under argon shield by making the copper cover aluminum blank after the abutment joint surface soldered of argon arc welding machine to copper strips;
C, cold-drawn undergauge: go the oxide skin of clean welding back copper strips, adopt conventional cold-draw equipment to dwindle the copper cover aluminum blank diameter;
D, heating, roll compacting stretch: under the 300-800 ℃ of temperature conditions, to the heating of copper cover aluminum blank, carry out once also stretching to twice warm-rolling, eliminate copper aluminium bonding gap, can roll into the cuprum alclad rectangular bus bar of different size;
E, annealing: according to the soft or hard degree of technical requirements of users, annealing process is annealed routinely.
The cuprum alclad rectangular bus bar of adopt clad welded, undergauge, heat, the technology making being finished in roll compacting continuously, specification: can design its sectional area according to the ampacity that the user provides.Technical indicator: density is 3.32 gram/cm
3-3.63 gram/cm
3, also can be according to the density of customer requirements; Hot strength 130Mpa-330Mpa after the annealing; D.C. resistance under the normal temperature＜0.027 Ω mm
2Full-size can reach 120 * 10mm or more than.Length is generally 6 meters, small size bus platoon leader Du Keda rice up to a hundred.Its manufacture method mainly by two kinds of diffuse heat treatments of copper aluminium, by rolling extension, makes two kinds of metal interfaces form the conductor of firm metallurgical combined.Copper density is 8.9 gram/cm
3, copper cover aluminum rectangle row's density 3.32 gram/cm
3-3.63 gram/cm
3, the density ratio differs 2.45 times.The bus parallelism of equal length, width, 2.485 times of copper cover aluminum rectangle parallelism pure copper-bus platoon leaders, then one ton of copper cover aluminum rectangle row can save 1.45 tons of fine copper, the resource of saving copper greatly.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (1)
1, the method for a kind of clad welded and rolling continuous making copper coated aluminum bus bank is characterized in that: finish the process that copper strips coats aluminium bar under Buchholz protection continuously, the concrete manufacture method of its cuprum alclad rectangular bus bar comprises the steps:
A, cleaning: the surface of copper strips and aluminium bar degreased respectively scrub;
B, bus row blank are made: according to the needs of finished size, designing and calculating goes out copper cover aluminum blank dimension, adopt the private volume carrying device that copper strips is coated along the aluminium bar long axis direction, under argon shield by making the copper cover aluminum blank after the abutment joint surface soldered of argon arc welding machine to copper strips;
C, cold-drawn undergauge: go the oxide skin of clean welding back copper strips, adopt conventional cold-draw equipment to dwindle the copper cover aluminum blank diameter;
D, heating, roll compacting stretch: under the 300-800 ℃ of temperature conditions, to the heating of copper cover aluminum blank, carry out once also stretching to twice warm-rolling, eliminate copper aluminium bonding gap, can roll into the cuprum alclad rectangular bus bar of different size;
E, annealing: according to the soft or hard degree of technical requirements of users, annealing process is annealed routinely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101511875A CN101465171A (en) | 2007-12-21 | 2007-12-21 | Method for making copper dural alclad bus-bar row continuously through coating, welding and rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101511875A CN101465171A (en) | 2007-12-21 | 2007-12-21 | Method for making copper dural alclad bus-bar row continuously through coating, welding and rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101465171A true CN101465171A (en) | 2009-06-24 |
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ID=40805695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101511875A Pending CN101465171A (en) | 2007-12-21 | 2007-12-21 | Method for making copper dural alclad bus-bar row continuously through coating, welding and rolling |
Country Status (1)
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| CN (1) | CN101465171A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303216A (en) * | 2011-08-26 | 2012-01-04 | 孙华侨 | Method for producing copper-clad aluminum bar |
| CN102623107A (en) * | 2012-04-19 | 2012-08-01 | 铜陵颐和泰新材料股份有限公司 | Production method of copper clad aluminum superfine flat wire with high width-to-thickness ratio |
| CN103022851A (en) * | 2012-12-21 | 2013-04-03 | 东莞市金澜电工材料有限公司 | Novel copper-aluminum transition plate production technology covering copper on double faces at one end of aluminum plate |
| CN104240839A (en) * | 2013-06-18 | 2014-12-24 | 嘉兴嘉合电力设备有限公司 | Method and system for manufacturing copper clad steel wire |
| CN104384857A (en) * | 2011-08-26 | 2015-03-04 | 孙华桥 | Production method for copper-clad aluminum busbars with lower electrical resistivity |
| CN106298080A (en) * | 2016-10-14 | 2017-01-04 | 国网辽宁省电力有限公司阜新供电公司 | A kind of production method of copper coated aluminum bus bank |
-
2007
- 2007-12-21 CN CNA2007101511875A patent/CN101465171A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303216A (en) * | 2011-08-26 | 2012-01-04 | 孙华侨 | Method for producing copper-clad aluminum bar |
| CN102303216B (en) * | 2011-08-26 | 2014-12-10 | 孙华桥 | Method for producing copper-clad aluminum bar |
| CN104384857A (en) * | 2011-08-26 | 2015-03-04 | 孙华桥 | Production method for copper-clad aluminum busbars with lower electrical resistivity |
| CN102623107A (en) * | 2012-04-19 | 2012-08-01 | 铜陵颐和泰新材料股份有限公司 | Production method of copper clad aluminum superfine flat wire with high width-to-thickness ratio |
| CN103022851A (en) * | 2012-12-21 | 2013-04-03 | 东莞市金澜电工材料有限公司 | Novel copper-aluminum transition plate production technology covering copper on double faces at one end of aluminum plate |
| CN103022851B (en) * | 2012-12-21 | 2015-11-11 | 东莞市金澜电工材料有限公司 | At the Novel copper-aluminium rebound production process of aluminium sheet one end double-sided copper-clad |
| CN104240839A (en) * | 2013-06-18 | 2014-12-24 | 嘉兴嘉合电力设备有限公司 | Method and system for manufacturing copper clad steel wire |
| CN106298080A (en) * | 2016-10-14 | 2017-01-04 | 国网辽宁省电力有限公司阜新供电公司 | A kind of production method of copper coated aluminum bus bank |
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Open date: 20090624 |