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Sliding electric contact material for low current

A sliding electrical contact, weak current technology, applied in contact materials, metal/alloy conductors, etc., can solve problems such as low hardness and wear resistance, reduced contact reliability, and unstable contact resistance.

Active Publication Date: 2008-08-20
CHONGQING CHUANYI AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is suitable for use as a sliding contact material under weak current working conditions, and the material can solve the problems of unstable contact resistance, reduced contact reliability, low hardness and wear resistance of weak electric sliding contact alloys at high temperatures

Method used

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  • Sliding electric contact material for low current
  • Sliding electric contact material for low current
  • Sliding electric contact material for low current

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Embodiment Construction

[0015] According to the configuration described in Table 1, take the material of the present invention, smelt in a vacuum induction melting furnace, use argon protective gas, smelt, cast ingot at 600-700°C / 3h, homogenize, hot-roll, surface treatment, medium Rolling, intermediate heat treatment at 500-700°C / 1h (vacuum), and finish rolling to obtain the sliding electrical contact material for weak current according to the present invention

[0016] Table 1 Example composition of the sliding electrical contact material for weak current of the present invention

[0017]

[0018]

[0019] Note: Here Re is a mixed rare earth element containing Ce and La

[0020] Table 2 Main properties of the sliding electrical contact material (processed state) for weak current of the present invention

[0021]

[0022] Compared with the Ag-Cu-Ni alloy comparative example finished product, the finished product of the material of the invention has improved hardness and tensile strength, an...

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Abstract

The invention relates to a slip electrical contact material for feeble current, the material is Ag-Cu-Ni-Re alloy, Ag-Cu-Zn-Ni-Re alloy or Ag-Cu-Pd-Zn-Ni-Re alloy, wherein Cu has a mass percentage of 0.1-10.0%, Ni has mass percentage of 0.01-0.6%, Re has a mass percentage of 0.01-0.5%, Zn has a mass percentage of 0.1-5.0%, Pd has a mass percentage of 0.1-105%,and the balance Ag. The invention solves the following problems of feeble current slip contact alloy under high: unstable contact resistance, low contact reliability, low hard and low wearing quality. The slip electrical contact material prepared by combining the material with copper or copper alloy has good quality and long life in a temperature scope ranging from -40 DEG C to 80 DEG C.

Description

technical field [0001] The invention relates to an electrical contact material, in particular to a sliding electrical contact material under the working condition of weak current (current≤1A). Background technique [0002] In recent years, in the above-mentioned fields of research and application technology, the research and production of new weak current contact materials are constantly developing to meet the growing needs of various types of small DC motors for weak current contact materials. [0003] Among various weak current contact materials, precious / cheap metal composite materials have been widely used in practical applications such as micro-motors, relays, and micro-switches due to their low precious metal content, good overall performance, and low price. Typical applications are as follows: Commutator and brush, etc. [0004] At present, the precious / cheap metal composite materials mainly include Ag-Cd / Cu, Ag-Cu / Cu, Ag-Ni / Cu, Ag-Cu-Ni / Cu and other series of two-la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02C22C5/08H01H1/02
Inventor 徐永红黄福详章应秦秀芳
Owner CHONGQING CHUANYI AUTOMATION
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