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High antifusion weding performance silver nickel base electric contact material and its preparation method

An electrical contact material, silver-nickel-based technology, applied in the direction of contact materials, etc., can solve the problems of low production efficiency and achieve the effect of reducing manufacturing costs

Inactive Publication Date: 2004-03-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation method of this material is only suitable for small-scale production, and the production efficiency is low

Method used

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  • High antifusion weding performance silver nickel base electric contact material and its preparation method
  • High antifusion weding performance silver nickel base electric contact material and its preparation method
  • High antifusion weding performance silver nickel base electric contact material and its preparation method

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Effect test

Embodiment

[0054] Contact samples were prepared according to the AgNi-based contact material formulation and preparation method of the present invention, respectively assembled in 3TB-42 contactors produced by Suzhou Siemens, and tested at the National Low-Voltage Electrical Appliance Quality Supervision, Inspection and Testing Center for 660V, 16A, AC -4 condition electrical life test. The test results show that: 1. The electrical life of the new AgNi-based electrical contact material reaches 41814 times without failure, which is 5 times higher than that of the original contact material; 2. The trace additive used for the diffusion arc root - alkali metal ( Lithium carbonate powder), its content must be strictly controlled; 3. The addition of wetting agent (germanium dioxide) delays the deterioration process of the contact matrix, Figure 5 The surface morphology of the new AgNi-based contact after arcing is shown; Image 6 shows the surface morphology of the new AgNi-based contact aft...

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Abstract

An AgNi-base electric contact resisting fusion welding contains Ni (0-10%), W (0-5%), GeO2 (0-1%), Li2Co3 (0-100 ppm) and Ag (rest), and is made up through die pressing, sinter and squeezing. Its advantage is long service life elongated by 5 times or more and low cost.

Description

1. The technical field [0001] The invention relates to an electrical device material, in particular to a silver-nickel (AgNi)-based electrical contact material with high welding resistance for small-capacity control electrical appliances. In addition, the present invention also relates to the Ni fiber orientation of the AgNi-based electrical contact material. And the preparation method of the contact material. 2. Background technology [0002] For small-capacity control appliances of 16A and below, since there is no special magnetic blowing arc extinguishing device, the working performance mainly depends on the performance of the contacts that directly perform the opening and closing operations. [0003] AgNi contact material has good electrical and thermal conductivity, low and stable contact resistance, excellent corrosion resistance, and easy processing. In addition, its manufacturing cost is low and it is suitable for mass production. These properties make AgNi materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C5/06H01H1/02
Inventor 荣命哲王小华
Owner XI AN JIAOTONG UNIV
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