WCu Switching Contacts

WCu Switching Contacts

Description

Tungsten copper alloy is a common raw material for electrodes, electrical contacts, welding processing, and high-temperature processing. The copper content of commonly used alloys is 10%-50%. They have excellent electrical conductivity, thermal conductivity, and plasticity, at very high temperatures, such as above 3000 ° C, the copper in the alloy is liquefied and evaporated, absorbing a lot of heat and reducing the surface temperature of the material. So this kind of material is also called metal sweating material.

Processing technology

WCu Switching Contacts are mainly made of high-quality tungsten-copper alloy materials after powder metallurgy processing, which has gone through grinding and mixing, injection molding, degreasing sintering, surface treatment, and other processes.

There is also a melt infiltration method that can be used to produce contact materials. First, the tungsten powder is pressed into shape and sintered into a tungsten skeleton with a certain porosity, and then infiltrated with copper. Copper has good plasticity and fills the pores between the sintered tungsten. Some copper infiltrates into the tungsten particles, thereby improving the plasticity and service life of the alloy.

Characteristics

• High strength, good plasticity, high density
• Good arc-breaking performance, good electrical and thermal conductivity, good heat dissipation performance
• Low contact resistance, good resistance to welding, excellent arc ablation resistance
• High-temperature resistance, excellent thermal stability, good high-temperature strength
• Excellent processing performance, high processing precision, and high quality

Application

WCu Switching Contacts are often used as contacts for high and low-voltage electrical switches and are widely used in various high-voltage load switches, SF6 circuit breakers, on-load tap changers, and large-breaking capacity disconnectors or earthing switches. They can load the current in the circuit, connecting and disconnecting the circuit.

It should be noted that the staff should regularly inspect the quality of the contacts, and replace them in time if they are worn or break failure.

WCu Switching Contacts Specifications:

WCu Switching Contacts Pictures

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