CN104353966B - A kind of plasticity and the production method of the preferable copper clad aluminum wire of toughness - Google Patents
A kind of plasticity and the production method of the preferable copper clad aluminum wire of toughness Download PDFInfo
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- CN104353966B CN104353966B CN201410585374.4A CN201410585374A CN104353966B CN 104353966 B CN104353966 B CN 104353966B CN 201410585374 A CN201410585374 A CN 201410585374A CN 104353966 B CN104353966 B CN 104353966B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/02—Single bars, rods, wires, or strips
Abstract
The present invention relates to the production method of a kind of copper clad aluminum wire, comprise the steps: copper strips, aluminium dispatch are entered coating machine shaping welding, then tighten up with cold rolling mill, then according to required size sawing；Preheat in the copper cover aluminum discharge broken is continuously introduced into intermediate-frequency heating furnace so that it is temperature is adjusted to 300 600 DEG C；Then copper cover aluminum discharge being sent into continuous furnace, heating-up temperature is 300 620 DEG C, and the heat time is 90 minutes 120 minutes；Then copper cover aluminum discharge is run by roller-way and send into hot-rolling mill finish rolling, cooling；The copper cover aluminum discharge rolled is carried out drawing sizing；Then copper cover aluminum discharge is put into after vacuum annealing furnace carries out bright annealing, obtain finished product.The production method of the copper clad aluminum wire of the present invention is aluminium core outer cladding layers of copper, and low cost can produce continuously, and technological process is short, production efficiency is high, all use mechanized operation, and interface bond strength is high, can fully meet the requirement of electrical equipment.
Description
The application is divisional application, the application number of original application: 201110250139.8, the applying date: 2011-08-26, invention and created name: the production method of copper clad aluminum wire.
Technical field
The present invention relates to the production method of a kind of copper clad aluminum wire.
Background technology
Copper clad aluminum wire is a kind of with aluminium as matrix, and external sheath copper makes to be formed between them the bimetallic of metallurgical binding, surface-brightening, rounding, zero defect between permanent atom.It is the energy high-quality of copper being stablized electric conductivity with the low cost of aluminium, with relatively low contact resistance, the novel conductor material being combined as a whole.Fine copper row can be substituted comprehensively, the weight ratio of copper clad aluminum wire is: copper accounts for 40%, aluminium accounts for 60%, it it is the 2-2.5 double-length of fine copper row in the case of same size, current-carrying capacity is the 90.7% of fine copper row, during selection, sectional area increase about 10% can be fully achieved current-carrying capacity identical with fine copper, and its mechanical property and electrical property all can meet the requirement of client.Copper clad aluminum wire advantage: 1, good electric conductivity: copper aluminium volume ratio is the copper clad aluminum wire electrical property of 15% or 20%, its ac amount is the 90.7% of fine copper compared with copper bar.2, lightweight: the density of copper clad aluminum wire is only the 37%-40% of fine copper row, the length (volume) of equivalent weight is 2-2.5 times of fine copper row.3, good mechanical property: there is good tensile strength, flexible and elongation percentage.4, combine between firm copper aluminium: in various environment temperatures, reach permanent atom intergranular between two kinds of different metal materials combine, and layers of copper (tin plating, zinc layers) is evenly distributed, and there is not any physical imperfection.5, good ductility and reliability: through special Technology for Heating Processing, have certain plasticity, and beneficially punching, shearing, bending machining product do not ftracture, do not separate.
The external Copper-Aluminum compound scheduling product that produce are generally adopted by hydrostatic extrusion technology, it is that copper and aluminium are made composite blank, utilizes high hydrostatic pressure and big processing deformation rate effect to realize the solid phase binding between copper, aluminium, and deformation is uniformly, but can not produce continuously, production efficiency is relatively low.The technology of domestic employing is airtight casting, and cost is high, and loss is big, and technological requirement is complicated, and manufacturing cost is high, is not suitable for producing in enormous quantities, it is impossible to be truly realized energy-conserving and environment-protective.
Above-mentioned copper clad aluminum wire of the prior art is disadvantageous in that: existing production technology, and between aluminium, copper, metallurgical binding is poor, causes contact resistance to strengthen；Resistance of deformation and plasticity are poor, and resistivity is higher, and the mechanical performance of workpiece tends not to meet needs, how to solve these problems, are the technical barriers of this area.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of step is simple, metallurgical binding is preferable, resistivity is relatively low and plasticity and the production method of the preferable copper clad aluminum wire of toughness.
For solving above-mentioned technical problem, the production method of the copper clad aluminum wire that the present invention provides, comprise the steps:
A, copper strips, aluminium are discharged into row surface de-oxidation layer process；
B, then, enters coating machine shaping welding by copper strips, aluminium dispatch, then tightens up with cold rolling mill, then according to required size sawing；
C, the copper cover aluminum discharge broken is continuously introduced into intermediate-frequency heating furnace in preheat the 60-150 second so that it is temperature is adjusted to 300-600 DEG C；
D, then by copper cover aluminum discharge send into continuous furnace, heating-up temperature is 300-620 DEG C, and the heat time is 90 minutes-120 minutes；
E, then by copper cover aluminum discharge by roller-way run send into hot-rolling mill finish rolling, cooling；
F, the copper cover aluminum discharge rolled is carried out drawing sizing after, according to technique scale sawing；
G, copper cover aluminum discharge good for scale is put into vacuum annealing furnace carries out bright annealing after, obtain finished product, annealing temperature is 400-600 DEG C, and annealing time is 6-12 hour；
H, place products on automatic packaging line packaging warehouse-in.
Specifically, the mill speed of described hot-rolling mill is 80-100 meter per second, and rolling temperature is 280-640 DEG C.
Further, the welding manner that the shaping welding of described coating machine uses is: using high frequency argon arc from fusing soldering welder continuously from fusion welding copper clad aluminum wire, speed of welding is more than 15 ms/min.
The technique effect that the present invention has: the production method of the copper clad aluminum wire of the present invention is aluminium core outer cladding layers of copper, low cost, can produce continuously, and technological process is short, production efficiency is high, all use mechanized operation, interface bond strength is high, can fully meet the requirement of electrical equipment.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail:
The production method of the copper clad aluminum wire of the present embodiment comprises the steps:
Copper strips, aluminium are discharged into row surface de-oxidation layer and process by A, employing covering material processor；
B, then, enters coating machine shaping welding by copper strips, aluminium dispatch, then tightens up with cold rolling mill, then according to required size sawing；
C, the copper cover aluminum discharge broken is continuously introduced into intermediate-frequency heating furnace in preheat the 60-150 second so that it is temperature is adjusted to 300-600 DEG C；Use intermediate frequency furnace to preheat, be suitable to make copper top layer melt with aluminum surface layer in transient heating, the top layer moment of two kinds of alloying metals, reach metallurgical binding truly.
D, then by copper cover aluminum discharge send into continuous furnace, heating-up temperature is 300-620 DEG C, and the heat time is 90 minutes-120 minutes；The purpose using continuous furnace to make copper cover aluminum discharge heat become is: reduces the shaping in the resistance of deformation of material, raising plasticity, the beneficially operation of rolling, improves stability in the operation of rolling.
E, then by copper cover aluminum discharge by roller-way run send into hot-rolling mill finish rolling, cooling；Rolling is to be placed in by metal material in two rolls reversely rotated, and is allowed to obtain compression, makes metal material produce simultaneously and be plastically deformed and recrystallization under the conditions of being also above recrystallization temperature.Rolling can make product improve its tissue while shaping, thus obtains the size and dimension that we are required, makes the product of shaping change crystalline state to improve the mechanical performance of workpiece.
F, the copper cover aluminum discharge rolled is carried out drawing sizing after, according to technique scale sawing；The mill speed of described hot-rolling mill is 80-100 meter per second, and rolling temperature is 280-640 DEG C.
G, copper cover aluminum discharge good for scale is put into vacuum annealing furnace carries out bright annealing after, obtain finished product, annealing temperature is 400-600 DEG C, and annealing time is 6-12 hour；Annealing is to be placed on by product workpiece in certain material frame, is heated to preset temperature according to different product specifications, and in this temperature after holding certain time, naturally cools to normal temperature.This annealing steps, is suitable to improve plasticity and toughness, makes chemical composition homogenize, and removes residual stress, obtains intended physical property；It is further adapted for reducing resistivity, strengthens the conductance of copper clad aluminum wire.Additionally, annealing is further adapted for the slight oxidation eliminating copper clad aluminum wire in production process, improve the surface quality of copper clad aluminum wire.
H, place products on automatic packaging line packaging warehouse-in.
The welding manner that the shaping welding of described coating machine uses is: using high frequency argon arc from fusing soldering welder continuously from fusion welding copper clad aluminum wire, speed of welding is more than 15 ms/min.
Obviously, above-described embodiment is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And these spirit belonging to the present invention are extended out obvious change or variation still in protection scope of the present invention among.
Claims (1)
1. the production method of a copper clad aluminum wire, it is characterised in that comprise the steps:
A, copper strips, aluminium are discharged into row surface de-oxidation layer process；
B, then, enters coating machine shaping welding by copper strips, aluminium dispatch, then tightens up with cold rolling mill, then according to required size sawing；
C, the copper cover aluminum discharge broken is continuously introduced into intermediate-frequency heating furnace in preheat the 60-150 second so that it is temperature is adjusted to 300-600 DEG C；
D, then by copper cover aluminum discharge send into continuous furnace, heating-up temperature is 300-620 DEG C, and the heat time is 90 minutes-120 minutes；
E, then by copper cover aluminum discharge by roller-way run send into hot-rolling mill finish rolling, cooling；
F, the copper cover aluminum discharge rolled is carried out drawing sizing after, according to technique scale sawing；
G, copper cover aluminum discharge good for scale is put into vacuum annealing furnace carries out bright annealing after, obtain finished product, annealing temperature is 400-600 DEG C, and annealing time is 6-12 hour；
H, place products on automatic packaging line packaging warehouse-in；
The welding manner that the shaping welding of described coating machine uses is: use high frequency argon arc from fusing soldering welder continuously from fusion welding copper clad aluminum wire；
The rolling temperature of described hot-rolling mill is 280-640 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585374.4A CN104353966B (en) | 2011-08-26 | 2011-08-26 | A kind of plasticity and the production method of the preferable copper clad aluminum wire of toughness |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585374.4A CN104353966B (en) | 2011-08-26 | 2011-08-26 | A kind of plasticity and the production method of the preferable copper clad aluminum wire of toughness |
| CN201110250139.8A CN102303216B (en) | 2011-08-26 | 2011-08-26 | Method for producing copper-clad aluminum bar |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110250139.8A Division CN102303216B (en) | 2011-08-26 | 2011-08-26 | Method for producing copper-clad aluminum bar |
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| CN104353966A CN104353966A (en) | 2015-02-18 |
| CN104353966B true CN104353966B (en) | 2016-08-17 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1330600A (en) * | 1971-08-24 | 1973-09-19 | Ibm | Method for forming copper-containing aluminium conductors |
| CN101051541A (en) * | 2007-05-09 | 2007-10-10 | 大连信瑞科技有限公司 | Method for producing copper cladded aluminum row |
| CN100508078C (en) * | 2007-09-11 | 2009-07-01 | 丹阳市中信化工电器设备有限公司 | A production method for copper-coated aluminum material |
| CN101236798B (en) * | 2008-02-04 | 2010-07-28 | 北京科技大学 | A copper adulterated aluminum complex flat line and its making method |
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