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A kind of heat treatment method of copper chromium alloy for high voltage switch

A heat treatment method, copper-chromium alloy technology, applied in the field of heat treatment of alloy materials, can solve problems that affect product quality and performance, and performance parameters are difficult to greatly improve, and achieve the effect of improving quality and performance and considerable economic benefits

Active Publication Date: 2017-02-08
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the literature, the hardness of the copper-chromium alloy treated by the traditional process is up to about 110HB, and it is difficult to greatly improve the performance parameters, which affects the quality and performance of the product.

Method used

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  • A kind of heat treatment method of copper chromium alloy for high voltage switch

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Effect test

Embodiment 1

[0017] The heat treatment method of copper chromium alloy for high voltage switch in the present embodiment comprises the following steps:

[0018] (1) Copper-chromium alloy (see Table 1 below for specific composition) profiles are subjected to solid solution treatment after blanking, kept at a temperature of 1035°C for 60 minutes, then quickly quenched into flowing clear water and cooled to room temperature for later use;

[0019] (2) Take the material after solid solution treatment and carry out aging treatment immediately, keep it warm for 120 minutes at a temperature of 470° C., and cool it naturally in air to room temperature.

Embodiment 2

[0021] The heat treatment method of copper chromium alloy for high voltage switch in the present embodiment comprises the following steps:

[0022] (1) Copper-chromium alloy (see Table 1 below for specific composition) profiles are subjected to solid solution treatment after blanking, kept at a temperature of 1040°C for 50 minutes, then quickly quenched into flowing clear water and cooled to room temperature for later use;

[0023] (2) Take the material after solid solution treatment and perform aging treatment immediately, keep it warm for 130 minutes at a temperature of 460° C., and cool it naturally in the air to room temperature.

Embodiment 3

[0025] The heat treatment method of copper chromium alloy for high voltage switch in the present embodiment comprises the following steps:

[0026] (1) Copper-chromium alloy (see Table 1 below for specific composition) profiles are subjected to solid solution treatment after blanking, kept at a temperature of 1030°C for 70 minutes, then quickly quenched into flowing clear water and cooled to room temperature for later use;

[0027] (2) The material after solid solution treatment was taken to be subjected to aging treatment immediately, kept at a temperature of 480° C. for 110 minutes, and naturally cooled to room temperature in air.

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Abstract

The invention discloses a heat treatment method of a copper-chromium alloy used for a high-voltage switch and belongs to the technical field of a heat treatment technology of an alloy material. The heat treatment method comprises following steps: (1) performing a solution treatment to a copper-chromium alloy profile, maintaining the temperature at 1030-1040 DEG C for 50-70 min and rapidly cooling the alloy profile to room temperature for later use; (2) instantly performing aging treatment to the alloy profile after the solution treatment, maintaining the temperature at 460-480 DEG C min for 110-130 min and naturally cooling the alloy profile to room temperature. The heat treatment method of the copper-chromium alloy can effectively improve hardness of a copper-chromium alloy part. A hardness upper limit in a conventional technology is overcome and the hardness can finally reach higher than 130 HBW so that quality and performances of a product is greatly enhanced. The copper-chromium alloy is suitable for a copper-chromium alloy contact part used for the high-voltage switch, wherein the copper-chromium alloy contact part comprises a moving contact, a fixed contact, a sliding contact, a self-operated contact and the like, thereby achieving a significant economic benefit.

Description

technical field [0001] The invention relates to a heat treatment method for a copper-chromium alloy used in a high-voltage switch, and belongs to the technical field of heat treatment of alloy materials. Background technique [0002] CuCr alloy refers to a series of alloys formed by taking Cu as the matrix and adding Cr and other trace alloying elements. Because of its high strength and hardness after heat treatment, good electrical and thermal conductivity and corrosion resistance, it is currently mainly used for the preparation of resistance welding electrodes, contact parts, integrated circuit lead frames, motor collector rings, etc. High strength product. Chromium has a small amount of solid solution in copper, which is beneficial to improve high temperature plasticity. The maximum solubility of chromium in copper is 0.65% at 1076.2°C. During solution treatment, below the solidus line, the solubility of chromium in copper increases significantly as the temperature inc...

Claims

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Application Information

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IPC IPC(8): C22F1/08C22C9/00
CPCC22C9/00C22F1/08
Inventor 王安平张丹丹陈延辉刘建权
Owner STATE GRID CORP OF CHINA
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