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The Development Of Carbide Cutting Tools
Jan 03, 2019

In 1969, Sweden successfully developed a titanium carbide coated tool. The base of the tool is tungsten-titanium cobalt hard alloy or tungsten-cobalt hard alloy. Compared with the same grade alloy tool, the thickness of the surface titanium carbide coating is only a few microns with service life is extended by 3 times and the cutting speed is increased by 25% to 50%. The fourth generation of coating tools appeared in the 1970s for cutting difficult materials. Coated cemented carbide has also been available for nearly two decades.

There are more than 50 countries in the world producing hard alloys and the main producing countries are the United States, Russia, Sweden, China, Germany, Japan, the United Kingdom, France, etc.

Cemented carbide is a compound metal material produced by powder metallurgy of carbides and binder metals of one or more refractory metals.

The cutting speed of new cemented carbide tools is now several hundred times that of carbon steel. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which remains basically unchanged even at a temperature of 500 °C. Carbide is widely used as a tool material, such as turning tools, milling cutters, planers, drills, boring tools, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel, can also be used for cutting hard-to-machine materials such as heat-resistant steel, stainless steel, high manganese steel, and tool steel.

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