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What material does cutting tool use, huatian will answer

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  The material of manufacturing cutter needs to have higher high temperature hardness and wear resistance, flexural strength, impact toughness and chemical inertia, good technology, and not easy to deformation.Usually when the material hardness is high, wear resistance is also high;When bending strength is high, impact toughness is also high.But the higher the hardness of the material, the lower its bending strength and impact toughness.Due to its high bending strength, impact toughness and good machinability, high speed steel is still widely used as tool material in modern times, followed by hard alloy.
  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 reinforced plastics, etc.Carbon and alloy tool steels are now used only as file, die and tap tools.
  Carbide indexable blades are now coated with hard layers of titanium carbide, titanium nitride, aluminum oxide or composite hard layers by chemical vapor deposition.The physical vapor deposition method is being developed not only for carbide tools but also for high speed steel tools such as drill bits, hobs, taps and milling cutters.As a barrier to chemical diffusion and heat conduction, the hard coating slows down the wear rate of the cutting tool, and the service life of the coated blade is about several times longer than that of the uncoated one.
  Due to the high temperature, high pressure, high speed, and corrosive fluid in the work of accessories, its application of more and more difficult to process materials, cutting automation level and machining accuracy requirements are becoming higher and higher.In order to adapt to this kind of situation, the development direction of cutting tool will be the development and application of new cutting tool materials, tool vapor deposition coating technology further development, on the high toughness of high strength concrete deposition coating high hardness, good solve the contradiction between the cutting tool material hardness and strength, the further development of indexable tool structure, improve the manufacturing precision of the cutting tool, reducing the difference of product quality.
  Tool materials can be roughly divided into the following categories: high speed steel, hard alloy, cermet, ceramics, polycrystalline cubic boron nitride and polycrystalline diamond.


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