In today's industrial field, carbide tools such as cutting tools, oil well drill bits, impact rock drill bits, etc. are gradually replacing traditional tool materials due to their excellent thermal, mechanical, and chemical properties. This high-quality tool is made from tungsten carbide powder (WC powder) as its core material, which is produced through a special process of powder metallurgy.
Compared with conventional tools, carbide tools exhibit significant advantages, including high hardness and strength, excellent red hardness, wear resistance, toughness, heat resistance, and corrosion resistance. What is particularly noteworthy is that even at high temperatures of 500 ℃, the hardness and wear resistance of hard alloy tools can still remain stable; At 1000 ℃, its hardness is still quite high. These outstanding performances are attributed to the unique properties of WC powder.
Tungsten carbide powder is a black hexagonal crystal powder with a metallic luster, a melting point of up to 2870 ℃, and a boiling point of up to 6000 ℃. Its hardness is comparable to diamond, and it has good electrical and thermal conductivity. At room temperature, the relative density of WC powder is about 15.63g/cm ³, and it is insoluble in water, hydrochloric acid, and sulfuric acid, but can easily dissolve in mixed acids such as nitric acid hydrofluoric acid.
The key raw material for manufacturing tungsten carbide powder is tungsten powder. In order to ensure the quality of hard alloy tools, there are strict requirements for the purity, particle size, and particle size distribution of tungsten powder.