Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition

A composite material and solid-liquid compounding technology, which is applied in the preparation of bimetallic composite materials by solid-liquid composite casting and drawing combination of copper materials, and in the field of bimetallic composite materials prepared by solid-liquid composite casting and drawing combination process, which can solve thermal cracking , low performance of interactive bimetal composite materials, composition segregation and other problems, to avoid oxidation slag, improve mechanical properties and physical properties, and improve shear performance

Inactive Publication Date: 2016-04-20
SHANGHAI JIAO TONG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a method for preparing bimetallic composite materials by combining solid-liquid composite casting and drawing of copper materials, so as to solve the problem of joint areas often caused when the existing composite technology connects copper materials and other materials. The formation of oxide slag, gas absorption, thermal cracking, and composition segregation problems, while solving a series of problems such as the existence of oxide films and intermediate compounds that seriously affect the interaction between the two metals and the low performance of bimetallic composites, Form a metallurgical bond between the two alloys, with excellent mechanical properties

Method used

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  • Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition

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Embodiment 1

[0031] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid composite and drawing combination of solid copper materials, including the following steps:

[0032] Step 1. Perform thermal spraying zinc surface treatment on the solid Cu-Cr-Zr copper alloy preset material to be connected, and the thickness of the zinc layer is 15 μm;

[0033] Step 2: Pre-position the solid Cu-Cr-Zr copper alloy after surface treatment at the desired position in the mold cavity;

[0034] Step 3: Melting the 6101 extruded aluminum alloy in a resistance furnace and pouring it into the mold cavity, using the metal mold casting process, the pouring temperature is 680°C, so that a metallurgical bond between copper and aluminum is formed;

[0035] Step 4. The obtained Cu-Cr-Zr-6101 copper-aluminum bimetallic drawing blank is annealed before drawing, the annealing temperature is 100°C, the annealing time is 300min, and then the drawing process is continued, and the proce...

Embodiment 2

[0039] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid composite and drawing combination of solid copper materials, including the following steps:

[0040] Step 1. Perform thermal spraying zinc surface treatment on the solid T2 red copper preset material to be connected, and the thickness of the zinc layer is 15 μm;

[0041] Step 2: Preset the solid T2 copper after surface treatment at the desired position in the mold cavity;

[0042] Step 3: Melt the A356 cast aluminum alloy in the resistance furnace and pour it into the mold cavity. Using the squeeze casting process, the pouring temperature is 700°C, and the squeeze casting pressure is 70MPa to form a metallurgical bond between copper and aluminum;

[0043] Step 4. The obtained T2-A356 copper-aluminum bimetallic drawing blank is annealed before drawing, the annealing temperature is 300℃, the annealing time is 50min, and then the drawing process is continued. The process is continuous ...

Embodiment 3

[0047] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid composite and drawing combination of solid copper materials, including the following steps:

[0048] Step 1. Perform thermal spraying zinc surface treatment on the solid T2 red copper preset material to be connected, and the thickness of the zinc layer is 15 μm;

[0049] Step 2: Preset the solid T2 copper after surface treatment at the desired position in the mold cavity;

[0050] Step 3: Melting the AZ91 magnesium alloy in the resistance furnace and pouring it into the mold cavity, using the squeeze casting process, the pouring temperature is 650℃, and the squeeze casting pressure is 50MPa, so that a metallurgical bond between aluminum and magnesium is formed;

[0051] Step 4. The obtained T2-AZ91 copper-magnesium bimetal is subjected to drawing processing, the process is straight drawing, the drawing temperature is 250°C, the reduction ratio is 40 / 100, and the drawing speed is 20m...

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Abstract

The invention discloses a method for preparing a double-metal composite material by solid-liquid combination of a solid-state copper material and drawing composition; and the method comprises a step of preparing a double-metal drawing blank by solid-liquid compound casting and a step of preparing the double-metal composite material by drawing. The method is characterized by using a process of solid-liquid connection after protection of a surface zinc layer to solve a series of problems as oxidation slag inclusion, inspiration, hot tearing and component segregation easily generated in connection between copper and other materials by a traditional welding method, overcomes the difficulty of barrier of metallurgical bonding formation between copper and other materials due to easy formation of an oxide film on the surface of the copper at high temperature, and uses a drawing method for molding to crush an intermediate compound formed on an interface in the solid-liquid compound process so as to improve the mechanical performance and the physical performance of the double-metal composite material and a basal body material. The method needs no gas protection, is simple in compound technology, is wide in technological conditions, is easy to operate, is simple in process equipment requirements, is high in interface bonding strength, and is excellent in electric conductivity.

Description

Technical field [0001] The invention belongs to the preparation field of bimetal composite materials, in particular to a method for preparing bimetal composite materials by solid-liquid composite casting and drawing combination of copper materials, in particular to a method for preparing bimetal composite materials by solid-liquid composite casting and drawing combination process Composite material method. Background technique [0002] With the development of modern industrial technology, the requirements for the comprehensive performance of materials are getting higher and higher. Under many working conditions, it is difficult for a single-component metal material to meet the requirements. Bimetal composite material is a new type of composite material prepared by combining two metals with different properties through various composite technologies. Compared with single-component metal materials, bimetal composite materials can comprehensively utilize the physical and chemical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16B21C1/00B21C9/00
CPCB22D19/16B21C1/003B21C9/00
Inventor 王渠东刘腾刘国平
Owner SHANGHAI JIAO TONG UNIV
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