Laminated silver-copper-brazing-filler-metal composite electrical contact material prepared by coating method and preparation method thereof

An electrical contact material and three-composite technology, which is applied in the field of alloy materials, can solve the problems of high cost of electrical contact materials, declining economic benefits of enterprises, and inconsistency with development trends, etc., and achieve excellent soldering resistance and arc resistance. Burn resistance, improve service life, and avoid the effect of additive segregation

Pending Publication Date: 2016-10-26
WENZHOU LONGSUN ELECTRICAL ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, today's silver resources are very limited. With the increase of the amount, the price of silver will rise soaring, so that the cost of producing electrical contact materials will remain high, the economic benefits of enterprises will decline, and the social benefits will also be greatly reduced.
Moreover, another metal element of this type of product, cadmium, is more polluting to the environment, which does not conform to the current development trend of environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] Preparation of three-layer composite electrical contact material of silver alloy / copper alloy / solder by coating powder

[0042] The silver alloy powder is obtained by the coating method. The method is to pour a certain proportion of silver nitrate into one or two or more elements or substances containing added metals, non-metals, non-metal compounds or metal oxides, or add rare earths In a container containing one or more elements of copper alloy, diamond micropowder, zirconium, yttrium, and dysprosium alloy, add ammonia water to adjust the PH value to 9.5. After stirring, add a certain amount of hydrazine hydrate to completely precipitate silver nitrate. The precipitate is filtered, cleaned and dried.

[0043] The copper alloy powder is prepared by mechanical powder mixing. The method is to mix 97.6% of copper powder, 1.5% of diamond micropowder, 0.2% of tungsten powder, 0.5% of lanthanum oxide powder, and 0.2% of nickel powder. The mixed powder is evenly mixed in a ball mi...

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Abstract

The invention discloses a laminated silver-copper-brazing-filler-metal three-composite electrical contact material prepared by a coating method. Silver alloy powder is prepared by a coating method and copper alloy powder is prepared by a mechanical method; the silver alloy power, the copper alloy power, and a brazing filler metal material are prepared into a band material; and compounding is carried out to obtain a three-composite electrical contact material. Therefore, an electrical contact material having advantages of low material costs, excellent integrated electrical performances, and environmental protection is provided to replace the traditional copper-alloy contact material, silver-alloy contact material, and silver-copper-alloy contact material.

Description

Technical field [0001] The invention relates to an alloy material, more specifically to a layered silver-copper-brazer three-composite electrical contact material prepared by a coating method and a preparation method thereof. Background technique [0002] The core components of relays, contactors, and circuit breakers are electrical contacts (points), which are responsible for the heavy task of making and breaking currents. The pros and cons of the contact components depend on the performance of the electrical contact (point) material and scientifically effective Combination, it is an important guarantee for electrical safety. [0003] Currently, the most widely used contact materials on the market are silver alloys and copper alloys. Copper alloy contact materials are partly used in circuit breakers and high-voltage switches. Although copper alloy contact materials are low in price, copper alloy electrical contacts have poor oxidation resistance. The length of time to commercial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H11/04H01H1/04
CPCH01H11/048H01H1/04
Inventor 冯如信郑元龙蒋源何高明
Owner WENZHOU LONGSUN ELECTRICAL ALLOY CO LTD
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