Relay classified according to the use, must have the automobile relay, communication relay, relay, home machine relay four human, if the contact load classification, mainly has the micro power relay, weak power relays, power relays, power relays in four categories. Relay for electric contactHead material requirements for: excellent electrical conductivity, low and stable contact resistance, good electrical wear resistance and excellent resistance to welding. Contact material is the key material in relay, its relay in sichuan is: when some parameters (current, voltage, temperature, pressure, etc.) to the expected value movement, cause the control circuit connected or breaking.
The development history of contact materials and pure metal, casting enterprises, powder for the enterprise three phase interface. From good conductive thermal conductivity of pure enterprises belong to a single, development to the alloy has good conductive thermal conductivity, and good arc corrosion resistance and good welding resistance
Agsn02 contact material life and sichuan in Europe has been relatively mature and widely used in contactor, breaker and relay switch 1, and in the aspect of new additives and application is still in development. AgSnO2 contact material of our country's research and development, production and application is still in the primary stage of development, on the one hand, Ann learning art, with mature technology and T another. Ways to combine the actual situation of low voltage apparatus in China, the research developed a corresponding contact materials, give full play to our research institutes, universities and enterprises in their respective strengths, 1 knot is consistent, in order to make AgSnO2 contact materials in our country wide popularization Fried should be plain and as soon as possible with effort
