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Chrome zirconium copper alloy and preparing and processing method thereof

A copper-chromium-zirconium and alloy technology, applied in the field of metal materials, can solve the problem of low electrical conductivity, etc., and achieve the effects of high strength and electrical conductivity, excellent mechanical properties and electrical conductivity

Inactive Publication Date: 2010-06-02
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing CuCrZr-based alloys can generally achieve higher strength through strengthening, but the electrical conductivity is less than 85% IACS. At the same time, due to the high affinity between Cr and Zr elements and oxygen, the burning loss is serious at high temperatures, making the CuCrZr-based alloys Melting has become the primary problem, so the development of a copper-chromium-zirconium alloy that not only maintains the high conductivity of the alloy but also ensures a certain strength value and its preparation and processing methods has become a technical problem that needs to be solved urgently in this technical field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of copper-chromium master alloy and copper-zirconium master alloy:

[0033] Put the weighed 0.976kg chromium raw material at the bottom of the crucible in a vacuum melting furnace, cover it with 9.024kg copper raw material, heat and melt it, and raise the temperature to 1100°C until the copper is completely melted, then raise the temperature to above 1500°C, until the chromium is completely melted, pour into The pressure is raised to 80MPa by argon, and the ingot is directly cast in a water-cooled copper mold, and the ingot is kept at 850°C for 4 hours to make its composition uniform. The chemical composition of the copper-chromium master alloy thus prepared is: Cu: 90.24%, Cr: 9.76%;

[0034] Heat and melt the weighed 9.122kg copper raw material in a vacuum melting furnace, and raise the temperature to 1100°C until the copper is completely melted. After the complete dissolution, the ingot is cast directly in a water-cooled copper mold, and the ingot is ...

Embodiment 2

[0046] 1. Preparation of copper-chromium master alloy and copper-zirconium master alloy:

[0047] Put the weighed 0.976kg chromium raw material at the bottom of the crucible in a vacuum melting furnace, cover it with 9.024kg copper raw material, heat and melt it, and raise the temperature to 1100°C until the copper is completely melted, then raise the temperature to above 1500°C, until the chromium is completely melted, pour into The pressure is raised to 80MPa by argon, and the ingot is directly cast in a water-cooled copper mold, and the ingot is kept at 850°C for 4 hours to make its composition uniform. The chemical composition of the copper-chromium master alloy thus prepared is: Cu: 90.24%, Cr: 9.76%;

[0048] Heat and melt the weighed 8.8kg copper raw material in a vacuum melting furnace, and raise the temperature to 1100°C until the copper is completely melted, then add 1.2kg of zirconium when the temperature rises to 1350°C, quickly rush into argon to raise the pressur...

Embodiment 3

[0060] 1. Preparation of copper-chromium master alloy and copper-zirconium master alloy:

[0061] Put the weighed 1.2kg chromium raw material at the bottom of the crucible in a vacuum melting furnace, cover it with 8.8kg copper raw material, heat and melt it, and raise the temperature to 1100°C until the copper is completely melted, then raise the temperature to above 1500°C, until the chromium is completely melted, pour into The pressure is raised to 80MPa by argon, and the ingot is directly cast in a water-cooled copper mold, and the ingot is kept at 850°C for 4 hours to make its composition uniform. The chemical composition of the copper-chromium master alloy thus prepared is: Cu: 88%, Cr: 12%;

[0062] Heat and melt 9.2kg of copper raw material weighed in a vacuum melting furnace, and raise the temperature to 1100°C until the copper is completely melted, then add 0.8kg of zirconium when the temperature rises to 1350°C, quickly rush into argon to raise the pressure to 0.15M...

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Abstract

The invention relates to chrome zirconium copper alloy and a preparing and processing method thereof, belonging to the field of metal materials. The chrome zirconium copper alloy comprises the components in percent by weight: 0.1% to 0.5% of chrome, 0.046% to 0.2% of zirconium, 0.05% to 0.2% of silver or tin and the balance of copper. The method comprises the steps of: preparing master alloy of chrome copper and zirconium copper in a vacuum melting furnace; melting the master alloy with the copper, the silver and the tin in vacuum to form the chrome zirconium copper alloy; equalizing an alloy ingot; then processing into a bar; solutionizing for 1 to 2 hours at 850 DEGC to 950 DEG C; cold processing until the processing deformation is from 70% to 98%; and time aging for 2 to 6 hours at 320 DEG C to 580 DEG C. The method can be used for accurately controlling the chemical components of the alloy; the tensile strength of the prepared alloy is from 450 MPa to 550 MPa by a test; the conductivity is from 85% to 95% IACS; and the alloy has higher strength and conductivity.

Description

technical field [0001] The invention relates to a copper-chromium-zirconium alloy and a preparation and processing method thereof, belonging to the field of metal materials. Background technique [0002] CuCrZr alloy is a high-performance functional material widely used in the field of high-strength and high-conductivity materials. Widely used in electric power, electronics, machinery and other industrial fields, can be used as electrical engineering switch contact bridge, continuous casting machine crystallizer lining, integrated circuit lead frame, high-power asynchronous traction motor rotor, electrified railway contact wire, thermonuclear experimental reactor (ITER) divertor vertical target heat sink, high pulse magnetic field conductor material, etc. [0003] High-strength and high-conductivity CuCrZr alloys can be strengthened by means of solid solution strengthening, precipitation strengthening, deformation strengthening, fine grain strengthening, work hardening and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08
Inventor 米绪军高宝东尹向前李艳锋解浩峰
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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