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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 contact materials and other directions, can solve problems such as low production efficiency, and achieve the effect of reducing manufacturing costs

Inactive Publication Date: 2005-03-16
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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Embodiment

[0053] According to the AgNi-based contact material formula and preparation method of the present invention, contact samples were prepared, respectively assembled in 3TB-42 contactors produced by Suzhou Siemens Company, and tested at 660V, 16A, AC -4 conditions of electrical life test. The test results show that: 1. The electrical life of the new AgNi-based electrical contact material has reached 41814 times without failure, which is 5 times higher than the original contact material; 2. The trace additive used to diffuse the 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; Figure 6 Shows the surface morphology of the new AgNi-based contact magnified 1000 times after arcing, it can be seen that the same as figure 2 Compared with the new Ag...

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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. Technical field [0001] The present invention relates to a kind of electric device material, particularly relate to the silver-nickel (AgNi) base electric contact material with high anti-welding performance of small-capacity control electric appliance, in addition, the present invention also relates to this AgNi base electric contact material Ni fiber orientation And the preparation method of the contact material. 2. Background technology [0002] 16A and below small-capacity control electrical appliances, because there is no special magnetic blowing arc extinguishing device, so its working performance mainly depends on the performance of the contacts that directly perform the opening and closing operation. [0003] AgNi contact material has good electrical and thermal conductivity, low and stable contact resistance, excellent corrosion resistance, and is easy to process. It can be directly welded from wire or formed strip to the contact base. This material can be used ver...

Claims

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Application Information

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