Definition of cemented carbide
Cemented carbide is made of W, Mo, Cr, Ti, Zr, Hf, V, Nb, Ta nine kinds of carbonization and Fe (Fe, Co, Ni) metal combined with the general name of the alloy, generally refers to the WC-Co alloy.
Usually when the material hardness is high, the wear resistance is high;
When the bending strength is high, the impact toughness is high.
However, the higher the hardness of the material, the lower the bending strength and impact toughness.
HSS is still the most widely used material, followed by cemented carbide, because of its high bending strength and impact toughness, as well as its good machinability.
The materials manufactured must have high high temperature hardness and wear resistance, the necessary bending strength, impact toughness and chemical properties, good technology (cutting, forging and heat treatment, etc.), and not easy to deformation.
The matrix of tungsten steel is composed of two parts: one is the hardening phase;
The other part is the bonding metal.
Bonding metal is generally iron group gold tail, commonly used is cobalt, nickel and titanium, so there are tungsten-cobalt alloy, tungsten-nickel alloy and tungsten-titanium drill alloy, tungsten-containing steel, such as high speed steel and some hot die steel, the steel containing tungsten has a significant increase in the hardness and heat resistance of steel, but the toughness will decline sharply.
material
The materials manufactured must have high high temperature hardness and wear resistance, the necessary bending strength, impact toughness and chemical properties, good technology (cutting, forging and heat treatment, etc.), and not easy to deformation.
Usually when the material hardness is high, the wear resistance is high;
When the bending strength is high, the impact toughness is high.
However, the higher the hardness of the material, the lower the bending strength and impact toughness.
HSS is still the most widely used material, followed by cemented carbide, because of its high bending strength and impact toughness, as well as its good machinability.
Polycrystalline cubic nitriding shan is suitable for cutting high hardness hardened steel and hard cast iron;
Polycrystalline diamond is suitable for cutting non-ferrous metals, alloys, plastics and FRP, etc.
Carbon and alloy tool steels are now used only for tools such as cutters, dies and taps.
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tungsten steel no magnetic plate hard metal superior quality precision Images
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