CN108878057B - The preparation method of the composite layer copper-coated aluminium composite material of high tenacity containing zinc - Google Patents

The preparation method of the composite layer copper-coated aluminium composite material of high tenacity containing zinc Download PDF

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Publication number
CN108878057B
CN108878057B CN201810602382.3A CN201810602382A CN108878057B CN 108878057 B CN108878057 B CN 108878057B CN 201810602382 A CN201810602382 A CN 201810602382A CN 108878057 B CN108878057 B CN 108878057B
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copper
aluminium
zinc
zincizing
composite layer
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CN201810602382.3A
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CN108878057A (en
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陈淑英
岳旭东
李青春
常国威
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Liaoning University of Technology
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Liaoning University of Technology
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/165—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon of zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Laminated Bodies (AREA)

Abstract

A kind of preparation method of the composite layer of high tenacity containing zinc copper-coated aluminium composite material, handles copper pipe inner wall, zinc foil surface and aluminium bar surface, removes removing oxide layer；Zincizing processing is carried out with sherardizing medium to copper pipe inner wall, obtains zincizing copper pipe；Aluminium bar is wrapped up with zinc foil and is inserted in the zincizing copper pipe；It is processed using cold rolling, cold extrusion or cold-drawn, realizes copper, zinc foil and aluminium mechanical compound；So that copper aluminium is realized metallurgical bonding using heat treatment mode, obtains copper-coated aluminium composite material containing zinc.Advantage is: simple process, easy to operate.Zinc foil is placed between copper aluminium, it is with cold-working molding method that copper zinc-aluminium machinery is compound first, then so that copper aluminium is realized metallurgical bonding with heat treatment method.The counterdiffusion of copper aluminium is hindered with zinc, to not occur intermetallic compound in composite layer to control, obtains the composite layer being made of the solid solution of copper and aluminium, makes composite layer that there is high toughness, obtains the copper-coated aluminium composite material with high tenacity composite layer.

Description

The preparation method of the composite layer copper-coated aluminium composite material of high tenacity containing zinc
Technical field
The invention belongs to copper-coated aluminium composite material preparation field, in particular to a kind of composite layer copper clad aluminum of high tenacity containing zinc is multiple The preparation method of condensation material.
Background technique
Conducting wire is made with copper-coated aluminium composite material, can reach and largely save copper metal while not influencing electric conductivity Purpose but still be concerned although there is also certain problems at present for the recycling of this material, technology of preparing development is fast Speed, application field constantly expand.Total preparation of copper clad aluminum recombination line (row) be first prepare copper clad aluminum base, then rolling or Drawing is become a useful person.Key technology is that can copper and aluminium realize metallurgical bonding in copper-coated aluminium composite material preparation process.It is all at present Realize that metallurgical bonding can be divided into two kinds in preparation method, first is that realizing metallurgical bonding before plastic processing；First is that real after plastic processing Existing metallurgical bonding.
For realizing metallurgical bonding before plastic processing.Casting is generallyd use, contacts liquid aluminium with In Crystal Solid Copper, copper surface It dissolves and forms albronze or aluminium copper between In Crystal Solid Copper and liquid aluminium, copper and aluminium realize metallurgical bonding after solidification.But It has the following problems；(1) composite layer is blocked up.It such as takes no action to, copper dissolution amount is big, and solid copper is worn by molten when serious, leaks Aluminium phenomenon, even not worn by molten, easily led to after solidification copper-aluminium transition thickness spend thick, bond strength is low, plastic processing when it is easy Cracking；(2) composite layer is uneven.When vertical pouring, the effect on composite ingot vertical section due to gravity segregation was easily caused Cross a layer upper-thin-lower-thick, it is flat that the copper of top dissolution is easily accessible molten aluminum by gravity when pouring, cause copper aluminium Mixed Zone big and It is chaotic；(3) once Temperature Field Control is improper, since composite layer is final solidified, shrinkage cavity or shrinkage porosite etc. are easily formed in composite layer and is lacked It falls into.Molten aluminum method preparation copper clad aluminum composite ingot method in cooling copper tube is forced to solve composite layer homogeneity question, but composite layer The big problem of brittleness still has.
For realizing metallurgical bonding after plastic processing.Copper-clad is first rolled in the surface of aluminium, mechanical bond is realized, then in heat Transition zone is formed by being diffused between copper aluminium for copper aluminium atom when processing, achievees the purpose that metallurgical bonding.Copper machine in this method The process that tool wraps up aluminium is easy to accomplish, and high-speed production easy to accomplish, and the final molding of material is not by the control of composite layer performance System, moulding process are easy to accomplish.But there are the following problems；(1) the welding process difficulty of copper sheet is big, not easy to control, quality not yet Stablize；(2) heat treatment time after becoming a useful person is long, and copper is oxidizable, and Equipment for Heating Processing is huge, and energy consumption is high；(3) after copper aluminium mechanical bond Some gaps always are left, cannot achieve metallurgical bonding at these gaps in the follow-up heat treatment process, bond strength cannot Guarantee；(4) it is melted according to by the aluminum portions wrapped up, so that it is realized metallurgical bonding with copper, then exist various in casting Problem.
Therefore, development technology window it is wide and it is easy implement, production cost is low, productivity is high, Copper-Aluminum compound transition zone is thin and Uniformly, the method for the high preparation copper clad aluminum base of composite layer strength and toughness is particularly important.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparations of the composite layer of high tenacity containing zinc copper-coated aluminium composite material Method, simple process is easy to operate, and Copper-Aluminum compound transition zone is thin and uniform, solves casting and forces cooling combined layer brittleness Big problem, and process avoids the generation of metal oxide, to guarantee the toughness of product.
The technical solution of the invention is as follows:
A kind of preparation method of the composite layer of high tenacity containing zinc copper-coated aluminium composite material, the specific steps of which are as follows:
(1) copper pipe inner wall, zinc foil surface and aluminium bar surface are handled, removes removing oxide layer；
(2) zincizing processing is carried out with sherardizing medium to copper pipe inner wall, copper pipe inner wall formed a layer thickness be 10 μm~ 15 μm of zinc coat obtains zincizing copper pipe；
(3) it aluminium bar and is inserted in the zincizing copper pipe with being wrapped up with a thickness of 0.5mm~2mm zinc foil；
(4) using cold rolling, cold extrusion or cold-drawn processing, realize copper, zinc foil and aluminium mechanical compound；
(5) so that copper aluminium is realized metallurgical bonding using heat treatment mode, obtain copper-coated aluminium composite material containing zinc.
Further, when step (5) is heat-treated, the temperature of heat treatment is 300 DEG C~350 DEG C, and soaking time is 1h~3h.
Further, when step (2) zincizing is handled, the temperature of zincizing is 400 DEG C~420 DEG C, soaking time be 13h~ 15h。
Beneficial effects of the present invention:
Simple process, it is easy to operate.Zinc foil is placed between copper aluminium, it is with cold-working molding method that copper zinc-aluminium is mechanical first It is compound, then so that copper aluminium is realized metallurgical bonding with heat treatment method.The counterdiffusion of copper aluminium is hindered with zinc, thus compound to control There is not intermetallic compound in layer, obtain the composite layer being made of the solid solution of copper and aluminium, makes composite layer that there is high toughness, Obtain the copper-coated aluminium composite material with high tenacity composite layer.
Detailed description of the invention
Fig. 1 is the truncation surface schematic diagram for inserting the zincizing copper pipe of zinc foil package aluminium bar；
In figure: 1- zincizing copper pipe, 2- zinc foil, 3- aluminium bar；
The Copper-Aluminum compound layer scanning electron microscope (SEM) photograph of Fig. 2 embodiment of the present invention 1.
Specific embodiment
Embodiment 1
(1) copper pipe inner wall, zinc foil surface and aluminium bar surface are handled, removes removing oxide layer；
(2) zincizing processing is carried out with sherardizing medium to copper pipe inner wall, the temperature of zincizing is 400 DEG C, and soaking time is 15h forms the zinc coat that a layer thickness is 10 μm in copper pipe inner wall, obtains zincizing copper pipe；
(3) as shown in Figure 1, with wrapping up aluminium bar with a thickness of 1mm zinc foil and inserting in the zincizing copper pipe；
(4) it is processed using cold extrusion, realizes copper, zinc foil and aluminium mechanical compound；
(5) the copper pipe zinc bar after step (4) machinery is compound is heat-treated, heat treatment temperature is 350 DEG C, heat treatment Time
For 2h, the composite layer copper-coated aluminium composite material of high tenacity containing zinc is obtained.Its compound layer tissue is as shown in Figure 1.Close to aluminium Side has obtained αAl(Zn) solid solution has obtained α close to copper sideCu(Zn) solid solution, to keep composite layer with higher tough Property.
Embodiment 2
(1) copper pipe inner wall, zinc foil surface and aluminium bar surface are handled, removes removing oxide layer；
(2) zincizing processing is carried out with sherardizing medium to copper pipe inner wall, the temperature of zincizing is 420 DEG C, and soaking time is 13h forms the zinc coat that a layer thickness is 15 μm in copper pipe inner wall, obtains zincizing copper pipe；
(3) it aluminium bar and is inserted in the zincizing copper pipe with being wrapped up with a thickness of 0.5mm zinc foil；
(4) it is processed using cold-drawn, realizes copper, zinc foil and aluminium mechanical compound；
(5) the copper pipe zinc bar after step (4) machinery is compound is heat-treated, heat treatment temperature is 300 DEG C, heat treatment Time is 3h, obtains the composite layer copper-coated aluminium composite material of high tenacity containing zinc.
Embodiment 3
(1) copper pipe inner wall, aluminium bar and zinc foil are surface-treated, remove surface oxide layer；
(2) zincizing processing is carried out to copper pipe inner wall, forms the zinc coat that a layer thickness is 12 μm in copper pipe inner wall, zincizing Temperature is 405 DEG C, soaking time 14h；
(3) aluminium bar is wrapped up with the zinc foil of 2mm thickness and be packed into copper pipe；
(3) copper, zinc foil, aluminium is made to realize that machinery is compound with the method for cold rolling；
(4) copper aluminium is made to realize metallurgical bonding with heat treatment method, the temperature of heat treatment is 320 DEG C, and soaking time obtains for 1h To the copper-coated aluminium composite material with high tenacity composite layer.
The above is only specific embodiments of the present invention, are not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (1)

1. a kind of preparation method of the composite layer of high tenacity containing zinc copper-coated aluminium composite material, it is characterized in that: specific step is as follows:
(1) copper pipe inner wall, zinc foil surface and aluminium bar surface are handled, removes removing oxide layer；
(2) zincizing processing is carried out with sherardizing medium to copper pipe inner wall, forming a layer thickness in copper pipe inner wall is 10 μm~15 μm Zinc coat, obtain zincizing copper pipe；The temperature of zincizing is 400 DEG C~420 DEG C, and soaking time is 13h~15h；
(3) it aluminium bar and is inserted in the zincizing copper pipe with being wrapped up with a thickness of 0.5mm~2mm zinc foil；
(4) using cold rolling, cold extrusion or cold-drawn processing, realize copper, zinc foil and aluminium mechanical compound；Then it is heat-treated, is obtained To copper-coated aluminium composite material containing zinc；
When heat treatment, the temperature of heat treatment is 300 DEG C~350 DEG C, and soaking time is 1h~3h.
CN201810602382.3A 2018-06-12 2018-06-12 The preparation method of the composite layer copper-coated aluminium composite material of high tenacity containing zinc Expired - Fee Related CN108878057B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103106967A (en) * 2011-11-11 2013-05-15 扬州光鸿钢构金属实业有限公司 Novel copper clad aluminum wire
CN105499543A (en) * 2015-12-23 2016-04-20 上海交通大学 Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition
CN105869716A (en) * 2016-04-02 2016-08-17 罗奕兵 Copper-coated aluminum composite flat micro wires and preparation method therefor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3470795B2 (en) * 2000-03-24 2003-11-25 東京特殊電線株式会社 Copper coated aluminum wire
WO2013134939A1 (en) * 2012-03-14 2013-09-19 Abb Technology Ltd. High conductivity and high strength copper clad aluminum busbar

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103106967A (en) * 2011-11-11 2013-05-15 扬州光鸿钢构金属实业有限公司 Novel copper clad aluminum wire
CN105499543A (en) * 2015-12-23 2016-04-20 上海交通大学 Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition
CN105869716A (en) * 2016-04-02 2016-08-17 罗奕兵 Copper-coated aluminum composite flat micro wires and preparation method therefor

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