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Preparation method of CuNiSi series alloy wire for electric connector

A technology for electrical connectors and alloy wires, which is applied in the field of preparation of CuNiSi alloy wires for electrical connectors, can solve the problems of uncertainty, high cost, weak supply, weak research and production forces, etc., and achieve good thermal conductivity and high purity High, high-strength effect

Active Publication Date: 2020-10-16
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Over the years, my country has been weak in research and production in this field, so that there is no independent production capacity of this product in China, and a large number of connector contact materials are imported from the United States and Japan, resulting in high cost and supply uncertainty.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A kind of preparation method of CuNiSi series alloy wire material for electric connector, specifically comprises:

[0025] 1) Ingredients: according to weight percentage: Cu-1.5wt.%Ni-0.2wt.%Si ingredients; Ni element is added in the form of 99.99% high-purity metallic nickel, Si element is added in the form of high-purity CuSi master alloy, Cu element is added in the form of 99.999% electrolytic copper plate and CuSi master alloy; wherein, the preparation method of CuSi master alloy is: put 99.999% electrolytic pure copper plate and 99.9% high-purity silicon into vacuum according to the weight ratio of 16:7 The degree is 3*10 -3 In the smelting furnace equipment of Pa, keep warm at 1600°C for 1 hour, fully melt and let it stand, fill it with 99.99% high-purity argon, cast it into an ingot with a diameter of 160mm and a length of 2m; then peel off the riser and cut it into a circumscribed circle A small block with a diameter not greater than 50 mm and a l...

Embodiment 2

[0033] Embodiment 2: A kind of preparation method of CuNiSi series alloy wire material for electrical connector, specifically comprises:

[0034] 2) Ingredients: according to weight percentage: Cu-3wt.%Ni-1wt.%Si-0.5wt.%Mn-0.3wt.%Cr-0.2wt.%Mg ingredients; Ni element is 99.99% high-purity metal nickel The Si element is added in the form of high-purity CuSi master alloy, the Mn element is added in the form of 99.99% high-purity metal manganese, the Cr element is added in the form of 99.99% high-purity metal chromium, and the Mg element is added in the form of 99.99% The form of high-purity metal magnesium is added, and the Cu element is added in the form of 99.999% electrolytic copper plate and CuSi master alloy; wherein, the preparation method of CuSi master alloy is: the electrolytic pure copper plate of 99.999% and 99.9% high-purity silicon according to 16 : The weight ratio of 7 into the vacuum is 3*10 -3 In the smelting furnace equipment of Pa, keep warm at 1600°C for 1 ho...

Embodiment 3

[0042] Embodiment 3: A kind of preparation method of CuNiSi series alloy wire material for electrical connector, specifically comprises:

[0043] 3) Ingredients: according to weight percentage: Cu-5wt.%Ni-1.5wt.%Si-0.6wt.%Mn-0.5wt.%Cr-0.4wt.%Mg ingredients; Ni element is 99.99% high-purity metal Add in the form of nickel, Si element is added in the form of high-purity CuSi master alloy, Mn element is added in the form of 99.99% high-purity metal manganese, Cr element is added in the form of 99.99% high-purity metal chromium, and Mg element is added in the form of 99.99% The form of high-purity metal magnesium is added, and the Cu element is added in the form of 99.999% electrolytic copper plate and CuSi master alloy; wherein, the preparation method of CuSi master alloy is: 99.999% electrolytic pure copper plate and 99.9% high-purity silicon The weight ratio of 16:7 put into the vacuum is 3*10 -3 In the smelting furnace equipment of Pa, keep warm at 1600°C for 1 hour, fully me...

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Abstract

The invention provides a preparation method of a CuNiSi series alloy wire for an electric connector. The preparation method specifically comprises the following steps of proportioning the following components of, in percentage by weight, 1.5wt.%-5wt.% of Ni, 0.2wt.%-1.5wt.% of Si, 0wt.%-0.6wt.% of Mn, 0wt.%-0.5wt.% of Cr, 0wt.%-0.4wt.% of Mg and the balance Cu; smelting; casting; machining a copper alloy bar meeting the requirement of the hot extrusion process by a sawing machine, a lathe and a forging machine; carrying out hot extrusion deformation; drawing and intermediate annealing; and straightening, cutting and slitting. According to the method, the CuNiSi alloy wire is prepared on the basis of the processes of vacuum melting, forging, extruding, straight pulling and disc pulling, theCuNiSi alloy wire high in strength, good in heat conductivity and electrical conductivity and high in purity can be stably prepared in batches on the premise that the requirements of copper alloy rawmaterial wires for electric connectors are met.

Description

technical field [0001] The invention relates to the technical field of manufacturing copper alloy materials, in particular to a method for preparing CuNiSi alloy wires for electrical connectors. Background technique [0002] Aerospace micro-pitch electrical connectors have strict requirements on product reliability and weight level. Therefore, in the case of meeting the requirements of the transmission performance index, the contact piece is light in weight, small in size, and small in size, which is an important development direction of the macro-pitch rectangular electrical connector for aerospace. This requires the high-strength copper alloy elastic material used to have excellent mechanical properties and maintain good electrical and thermal conductivity. [0003] At present, domestic copper alloy materials cannot meet the high standard requirements of aerospace-grade contacts, and the core wire conductor materials rely heavily on imports, resulting in a weak foundation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22F1/08B21C1/00B21C23/00B21C29/00B21J5/00C22C1/03
CPCB21C1/003B21C23/002B21C29/003B21J5/002C22C1/03C22C9/06C22F1/08
Inventor 李小阳庾高峰张航马明月吴斌王聪利靖林侯玲张琦
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD