Tungsten steel punching needle (hard alloy) has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, even at a temperature of 500 ℃ The bottom is basically unchanged, and the hardness is still very high at 1000°C. Cemented carbide is widely used as materials, such as turning tools, milling cutters, planing cutters, drill bits, boring cutters, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fibers, graphite, glass, stone and ordinary steel. It can also be used for cutting resistant Hard-to-process materials such as hot steel, stainless steel, high manganese steel, tool steel, etc. The cutting speed of the new cemented carbide is hundreds of times that of carbon steel. tungsten carbide punching pin use the quenching heating temperature of general tools, so the crystal grains have grown, the amount of dissolved carbon and alloying elements in the matrix increased, the hardness increased after tempering, and the toughness decreased, which caused fractures. root cause.
The matrix of the tungsten steel punch pin consists of two parts: one part is the hardening phase; the other part is the bonding metal. The bonding metal is generally iron group metals, and cobalt, nickel and titanium are commonly used. So there are tungsten-cobalt alloys, tungsten-nickel alloys and tungsten-titanium-cobalt alloys.
Tungsten-containing steels, such as high-speed steel and certain hot-work die steels. Tungsten in the steel can significantly improve the hardness and heat resistance of the steel, but the toughness will drop sharply. The main application of tungsten resources is also cemented carbide, that is, tungsten steel. tungsten carbide punching pin are called the teeth of modern industry. Tungsten steel products are widely used.
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