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Copper-chromium alloy and preparation method thereof

A copper-chromium alloy and alloy material technology, applied in the field of copper-chromium alloy and its preparation, can solve the problems of low tensile strength, limited application, low tensile strength, etc., and achieve the effect of high tensile strength

Active Publication Date: 2014-04-02
江苏鑫美特金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tensile strength of conventional copper alloy materials is low, usually only 400Mpa to 600Mpa, due to the low tensile strength of conventional alloy materials, its application is limited to some extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The preparation method of the copper-chromium alloy comprises the following steps: (1) the temperature of the high-temperature melting furnace is raised to 1000° C.; (2) adding 85 kg of Cr, 4 kg of Al, and 5 kg of Sn into the high-temperature melting furnace; After heating up to 1400°C, add 0.6kg of Co, 1kg of Sr, and 904.4kg of copper, and smelt for 11 hours; (4) Cool down the smelted alloy material at a cooling rate of 30°C / s, drop the temperature to 600°C, and keep it warm for 2 hours , and then cooled to room temperature to obtain a copper-chromium alloy.

Embodiment 2

[0010] The preparation method of the copper-chromium alloy comprises the following steps: (1) the temperature of the high-temperature melting furnace is raised to 950° C.; (2) 75 kg of Cr, 2 kg of Al, and 3 kg of Sn are added to the high-temperature melting furnace; After heating up to 1400°C, add 0.4kg of Co, 0.5kg of Sr, and 919.1kg of copper, and smelt for 8 hours; (4) Cool down the smelted alloy material at a cooling rate of 30°C / s to 600°C and keep warm 2h, and then cooled to room temperature to obtain copper-chromium alloy.

Embodiment 3

[0012] The preparation method of the copper-chromium alloy comprises the following steps: (1) the temperature of the high-temperature melting furnace is raised to 950° C.; (2) 80 kg of Cr, 3 kg of Al, and 4 kg of Sn are added to the high-temperature melting furnace; After heating up to 1400°C, add 0.4kg of Co, 0.5kg of Sr, and 912.1kg of copper, and smelt for 8 hours; (4) Cool down the smelted alloy material at a cooling rate of 30°C / s to 600°C and keep warm 2h, and then cooled to room temperature to obtain copper-chromium alloy.

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Abstract

The invention discloses a copper-chromium alloy and a preparation method thereof. The copper-chromium alloy comprises the following components in percentage by weight: 7.5%-8.5% of Cr, 0.2%-0.4% of Al, 0.3%-0.5% of Sn, 0.04%-0.06% of Co, 0.05%-0.10% of Sr and the balance of copper. The preparation method disclosed by the invention can be used for preparing the copper-chromium alloy by carrying out the steps of high-temperature smelting, temperature reduction, cooling and the like on the components; the prepared copper-chromium alloy has relatively high tensile strength.

Description

technical field [0001] The invention relates to an alloy and a preparation method thereof, in particular to a copper-chromium alloy and a preparation method thereof. Background technique [0002] Metal alloy materials are widely used, among which copper alloy occupies a large proportion in the use of metal alloy materials. Having good tensile strength is the basic condition for the application of copper alloys in some key fields. If it has high tensile strength, it can be used in some professional directions that have high requirements for the tensile properties of metal alloys. The tensile strength of conventional copper alloy materials is relatively low, usually only 400Mpa to 600Mpa, due to the low tensile strength of conventional alloy materials, its application is limited to some extent. Contents of the invention [0003] Technical problem to be solved: the problem of low tensile strength of conventional copper alloys. [0004] Technical solution: The invention disc...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/02
Inventor 王惠张松岩钱忆张陈新燕
Owner 江苏鑫美特金属科技有限公司