Tungsten Copper Contacts Spares
Tungsten Copper Contacts Spares
Tungsten copper contacts spares is an alloy composite of tungsten and copper which has the combination s of the excellent properties of tungsten and copper, such as heat resistance, aberration resistance, high density, excellent thermal and electrical conductivity.
Tungsten copper contacts spares are subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Only tungsten copper materials will stand these high temperature & aberration.
Tungsten Copper Contacts Spares Application
Tungsten copper contacts spares are best suitable material for electrical discharge machining (EDM) applications. It has excellent wear resistance, good metal removal rate and ability to retain good detail. It is used where speed and wear resistance are most important.
Tungsten copper contacts spares has good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the tungsten copper with a high copper content may give the lowest erosion. As arcing severity increases, the tungsten copper with the higher refractory content withstand arc erosion better. Tungsten copper contacts spares are also used as arcing edges of selector switchblades in transformer tap changers.
Tungsten-copper is popular because of its combination of unique material properties. A high level of temperature resistance is one of the most important advantages of tungsten, while the copper content increases the electrical and thermal conductivity. Tungsten copper contacts spares materials made of WCu are also characterized by the following properties:
High arc erosion resistance
Good electrical conductivity
Very good machinability
Good thermal conductivity
Low thermal expansion
Tungsten Copper Contacts Spares No Arc Erosion
By choosing the right mixture of tungsten and copper, we are able to influence the product's arc erosion properties. At a tungsten content of 80 %, we achieve the lowest arc erosion rates. Depending on the voltage and current intensity as well as on economic considerations, we can vary the tungsten content between 60 and 90 % to meet the exact needs of your application.
Tungsten Copper Contacts Spares Good Conductivity
The denser the material, the better it is at conducting electricity and heat. One trick for producing WCu in higher densities is to add nickel during the sintering process. However, too much nickel has a negative influence on the conductivity of the material. Take advantage of our employees' experience and benefit from an optimum balance between material density and conductivity.
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