Electrical Tungsten Contact Rivets is a tungsten chemical product that can be found everywhere. With its excellent mechanical properties, thermal properties and electrical properties, it is often used as a switch for electrical equipment to connect or disconnect the circuit. China Tungsten Online provides high-quality tungsten contact products.
Tungsten Contact Properties
Iron Tungsten Contact Rivets is a contact point that uses metal tungsten as the main raw material, so it has the physical and chemical properties of metal tungsten. Tungsten contacts have the characteristics of high specific gravity (19.1g/cm3~19.3 g/cm3), strong hardness (71-74HRA), high melting point, good impact toughness, low steam pressure, low evaporation rate, good arc resistance and melting resistance. In addition, with the continuous development of the global manufacturing industry, users have higher and higher requirements for Electrical Contact Of Tungsten Copper, that is, it should also have a clean and tidy appearance, fine and uniform cross-sectional grains, high straightness, concentricity and roundness.
Tungsten Contact Production Method
Tungsten Contact Rivet is a layered composite with a three-layer structure: the first layer is a 0.1-10mm thick hydrophobic rubber layer, the second layer is a 0.01-1.0mm thick metal sheet layer containing magnesium, aluminum, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, niobium, molybdenum, silver, tin or gold, and the third layer is a 2^10-5~0.02mm thick tungsten alloy coating. Among them, the third layer of tungsten alloy coating is formed by immersing the composite of the first and second layers in a chemical plating solution containing a soluble tungsten compound, and depositing the tungsten alloy on the surface of the second layer of the composite of the first and second layers by chemical deposition; the third layer of tungsten alloy coating contains tungsten elements of not less than 30% by weight.
Factors affecting the performance of tungsten contacts
1. Metallurgical defects of tungsten billets;
2. Improper particle size control of tungsten billets;
3. Poor control of tungsten billet pressing and sintering;
4. Improper processing technology design; 5. Parameter design of rotary forging die and die repair problems, etc.
Uses of tungsten contacts
Tungsten contacts are commonly used in automobiles (distributors, voltage regulators, horns, alarms), machine tool electrical appliances, various automatic switches, various relays, various switches, various communication machines, various alarms and other electrical products.
Common problems with tungsten contacts
1. How to judge normally open contacts and normally closed contacts
Main contacts are mostly normally open contacts with large current carrying capacity, and are mostly used to control motor start-up and other controls. Auxiliary contacts are mostly normally open contacts, which can be used in self-locking, signal transmission and other circuits. Auxiliary normally closed contacts realize linkage in complex circuits and are sometimes used as motor interlocks.
2. Identification of active contacts and passive contacts
Active contacts are contacts that are electrically charged and easily generate induced electricity or loop electricity; passive contacts are contacts that isolate and transmit and control signals in different control paths.
3. Identification of silver contacts and tungsten copper contacts
Under normal circumstances, silver contacts appear silvery white, and Solid Tungsten Contact Rivets appear yellow.
Our Products
Electrical Contact Of Tungsten Copper is unique in the field of electrical connections with its excellent properties. Tungsten has an ultra-high melting point and can easily withstand high temperature environments. It can still work stably under extreme conditions and effectively ensure the continuous connectivity of the circuit. Its extremely high hardness greatly enhances the wear resistance and significantly extends the service life. Even after frequent operation and friction, it can maintain precise contact.
