(1) Cemented carbide is made of hard compound of refractory metal and bonding metal by powder metallurgy process. It is an alloy material with very high hardness. High quality 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 500 ° C temperature is basically unchanged. It still has high hardness at 1000 ° C. A ceramic having certain properties of a metal.
(2) Tungsten steel is also called tungsten titanium alloy or high speed steel or tool steel. The hardness is Vickers 10K, second only to diamond. The term "sintered composite" refers to a sintered composite material composed of at least one metal carbide. Tungsten steel and cemented carbide have high hardness, wear resistance, strength and toughness, heat resistance and resistance. A series of excellent properties, such as corrosion. The advantage of tungsten steel lies in its high hardness and wear resistance. Even at 1000 ℃, it still has high hardness. Yi people can be called the second diamond. The grain size of carbide composition (or phase) is usually between 0.2-10 μ M.
(3) Tungsten steel is made by adding ferrotungsten to molten steel through steelmaking. It is made from raw materials for smelting tungsten, also known as high speed steel or tool steel. Its tungsten content is generally 15-25%. Cemented carbide is sintered with cobalt or other bonded metals by powder metallurgy. Tungsten content is usually higher than 80%. That is to say, all alloys with hardness higher than HRC65 can be called cemented carbide.
