Cemented carbide is a kind of powder metallurgy product which is mainly composed of carbide (WC, TIC) micron powder of high hardness refractory metal, with cobalt (CO) or nickel (Ni), molybdenum (MO) as binder and sintered in vacuum furnace or hydrogen reduction furnace.
Classification of cemented carbide
1.Tungsten cobalt cemented carbide
The main components are tungsten carbide (WC) and binder cobalt (CO)
2.Tungsten titanium cobalt cemented carbide
The main components are tungsten carbide, titanium carbide (TIC) and cobalt
3.Tungsten titanium tantalum (niobium) cemented carbide
The main components are tungsten carbide, titanium carbide, tantalum carbide (or niobium carbide) and cobalt. This kind of cemented carbide is also called universal cemented carbide or universal cemented carbide.
Why choose cemented carbide
Cemented carbide is a kind of alloy material which is made of hard compound of refractory metal and bonding metal by powder metallurgy process. Cemented carbide has a series of excellent properties, such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc., especially its high hardness and wear resistance, even at 500 ℃, it is basically unchanged, and still has high hardness at 1000 ℃.
Cemented carbide is widely used as cutting tool materials, such as turning tools, milling cutters, planers, drills, boring cutters, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fiber, graphite, glass, stone materials and ordinary steel, as well as for cutting heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult materials. Now the cutting speed of new carbide tools is hundreds of times that of carbon steel.
