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Copper-based non-silver electric contacts with brazing filler metal coating and production thereof

A manufacturing method and layer structure technology, applied in the direction of contact materials, etc., can solve the problems of low welding efficiency, unstable welding quality, affecting the popularization and use of copper-based silver-free electrical contacts, etc.

Inactive Publication Date: 2005-07-27
哈尔滨东大高新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current production of copper-based silver-free electrical contacts does not have a solder layer, so that the copper-based silver-free electrical contacts cannot be directly brazed on the bridge of low-voltage electrical appliances, and must be placed between the copper-based silver-free electrical contacts and the bridge. Soldering can only be done by presetting the solder
Low welding efficiency and unstable welding quality affect the promotion and use of copper-based silver-free electrical contacts

Method used

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  • Copper-based non-silver electric contacts with brazing filler metal coating and production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1 box-type resistance furnace heating method: it is made of copper-based silver-free electrical contact material, brazing filler metal, brazing flux, and the brazing filler metal is evenly melted on the copper-based silver-free electrical contact material by a box-type resistance heating furnace. cost invented products.

Embodiment 2

[0013] Embodiment 2 high, intermediate frequency induction heating method: it is by copper-based silver-free electric contact material, brazing filler metal, brazing flux, by high-frequency, medium-frequency induction heating equipment, brazing filler metal is evenly melted on the copper-based silver-free electric contact material, Make the product of the present invention.

Embodiment 3

[0014] Embodiment 3 sintering method: it is made of copper-based silver-free electrical contact material, brazing material, brazing flux, and solder is evenly melted on the copper-based silver-free electrical contact material by hot-melt equipment to make the product of the present invention .

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Abstract

The invention includes following steps:The copper base non-silver contact material is taken as main material on which a layer of solder is coated; the thickness of the solder is 0.01-0.50; the solder with soldering flux is preplaced on the copper base non-silver contact, through bonding process, metal press work or heater work the solder is uniformly coated on the copper base non-silver contact.

Description

Technical field: [0001] The invention relates to a technical method for covering a copper-based silver-free electrical contact with a solder layer, which is applied to the field of low-voltage electrical appliances suitable for copper-based silver-free electrical contacts. technical background: [0002] The copper-based silver-free electrical contact material made by powder metallurgy method has almost the same electrical performance as silver-based materials with its unique formula and process. In some aspects, it is even better than silver-based materials. It is an electrical contact material that can not only ensure electrical performance but also reduce production costs, the market prospect is extremely broad. However, the current production of copper-based silver-free electrical contacts does not have a solder layer, so that the copper-based silver-free electrical contacts cannot be directly brazed on the bridge of low-voltage electrical appliances, and must be placed b...

Claims

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Application Information

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IPC IPC(8): H01H1/02
Inventor 刘立群刘金城孔琦琪杨丛涛李木林邹强
Owner 哈尔滨东大高新材料股份有限公司
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