Cobalt tungsten carbide series is widely used as one of the most important wear-resistant coating materials with excellent properties at medium and low temperatures. Many developed countries such as the United States, Russia and the United Kingdom have carried out a lot of research work in this direction. They have formed many kinds of materials preparation methods, such as electrofusion crushing, sintering crushing, polymerization, coating and so on. Cobalt tungsten carbide coatings with different grades and different applications have been designed and prepared.

With the development of science and technology, the research trend of self-lubricating technology is that solid lubricating materials without environmental pollution, long wear-resistant life, low friction and self-repairing are more and more widely used in high-tech fields such as electronics, biology, communications, aerospace and aviation. Future research mainly focuses on the research of new solid self-lubricating materials, new self-lubricating methods, new material structure design and other aspects.

Tungsten copper based alloy is a pseudo-alloy composed of high melting point, high hardness tungsten and high conductivity and thermal conductivity copper. It has good arc erosion resistance, fusion resistance, high strength and high hardness. Contact materials for various types of ultra-high voltage, high voltage, medium voltage circuit breakers, transformer changeover switches, vacuum contactors, load switches.

Stamping die is an indispensable technological equipment for stamping production and a technology-intensive product. The quality, production efficiency and production cost of stamping parts are directly related to die design and precision quality of die parts.