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Silver tin-oxide zinc-oxide alloy electric contact and its production process

A silver tin oxide and production process technology, applied in the field of electrical contacts, can solve the problems of high cost, poor production and processing characteristics, and lack of reprocessing performance of bimetallic composite rivets, so as to achieve the effect of avoiding pollution and good processing performance

Inactive Publication Date: 2003-09-24
章景兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Silver, tin oxide, and indium oxide electrical contact materials are another type of alloy electrical contact materials. Although there have been 20 years of research, development and application history, this process has continued to this day. The key problem is its high cost. (Indium is more expensive than silver), poor production processing characteristics and poor reprocessing performance
Therefore, this product is currently still in the production of sheet contacts with simple shapes and does not require any mechanical processing during assembly and use, and does not have the reprocessing performance for manufacturing bimetallic composite rivets

Method used

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  • Silver tin-oxide zinc-oxide alloy electric contact and its production process

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:

[0023] Example 1: Weigh 14.27Kg silver ingot, place it in a medium frequency induction furnace to melt, then add 0.8Kg tin and 0.48Kg zinc in turn, after homogenization, clear the slag and cast it into a round ingot, cut off the gate and remove surface impurities, cut Break it into pieces, put it into a high-pressure container and heat it to 760-820°C, inject 6Kg / cm2 of oxygen, keep it warm for 36 hours, then process the oxidized pieces into small pieces with a punching machine, put them into a steel mold and pressurize them into Φ68mm For a round ingot with a length of 250mm, the formed round ingot is extruded at a high temperature of 820-860°C into a Φ4.0 rod, and then hot-drawn into a wire product of Φ1.12-3.9mm.

[0024] As above, 1.6Kg tin and 0.96Kg zinc were added respectively, and the same result was obtained.

[0025] Example 2: Weigh 14.64Kg of ...

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Abstract

The present invention relates to a silver tin oxide zinc oxide alloy electric contact, its composition contains 3.5-10.5% of SnO, 1.5-7% of ZnO and the rest is Ag. Said material also contains 0.1-0.8% of Ni, perfectly, 0.1-0.5%. As Compared with existent electric contact, the necessary other element components are added in the raw material, and an unique production process is adopted, the invented bimetal composte rivet contact with excellent performance can be made, so that it can implement the production of the silver tin oxide zinc oxide alloy wire material. Said invention can meet the requirements of high-power relay for using bimetal composite rivet contact.

Description

1. Technical field [0001] The invention relates to an electric contact made of silver-based silver, tin oxide and zinc oxide alloy and its production process. Especially the silver, tin oxide and zinc oxide alloy materials used to prepare electrical contacts. The electrical contacts prepared by this alloy include electrical contacts used in various relays, contactors and other electrical switches and bimetal composite rivet electrical contacts, sheet etc. 2. Background technology [0002] Although silver and cadmium oxide electrical contact materials widely used at present have excellent performance and low material cost, especially high cadmium oxide content, the manufacturing process is also very stable and mature, as described in Chinese patent 95111070 , but use more metal cadmium, the product contains cadmium oxide, and cadmium salt will remain in the environment in the future. Because metal cadmium and cadmium salt have a great toxic effect on the human body and are n...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C5/06C22C32/00H01H1/02
Inventor 章景兴
Owner 章景兴
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