Tool mold materials need to be resistant to high temperature and wear

Knives are tools used for cutting in mechanical manufacturing, also known as cutting tools. It is an important tool for mechanical manufacturing.

Materials for making tools must have high high temperature hardness and wear resistance, necessary bending strength, impact toughness and chemical inertness, good manufacturability (cutting, forging, heat treatment, etc.), and not easy to deform.

Usually when the hardness of the material is high, the wear resistance is also high; when the bending strength is high, the impact toughness is also high. But the higher the material hardness, the lower its flexural strength and impact toughness. Due to its high bending strength, impact toughness, and good machinability, high-speed steel is still the most widely used tool material in modern times, followed by cemented carbide.

Polycrystalline cubic boron nitride is suitable for cutting high hardness hardened steel and hard cast iron, etc.; polycrystalline diamond is suitable for cutting non-ferrous metals, alloys, plastics and glass steel, etc.; carbon tool steel and alloy tool steel Now it is only used as tools such as files, dies and taps.

Cemented carbide indexable inserts have been coated with titanium carbide, titanium nitride, aluminum oxide hard layer or composite hard layer by chemical vapor deposition. The physical vapor deposition method under development can be used not only for cemented carbide tools, but also for high-speed steel tools, such as drills, hobs, taps and milling cutters. The hard coating acts as a barrier to hinder chemical diffusion and thermal conduction, which slows down the wear rate of the tool during cutting, and the life of the coated blade is approximately 1 to 3 times longer than that of the uncoated blade.

China has become the world's most potential tool market, and many multinational tool groups are also in the development strategy of the post-crisis era, without exception, the expansion of tool sales in China is the first choice. Headquarters, Ru0026D centers, training centers, logistics centers, etc. have settled in China, so that China is the center of Asia, serving customers more directly and conveniently, and better meeting the special needs of customers in the Asia-Pacific region.