Cobalt Amount in Tungsten Carbide

Tungsten carbide is known as one of the most popular materials in modern industry, and it is also famous for its good properties such as high hardness, wear resistance, corrosion resistance, shock resistance, and durability.

In the manufacturing of tungsten carbide, operators have to add a certain amount of cobalt powder to the purified tungsten carbide powder, which may affect the grade of tungsten carbide. Then they need to put the mixed powder into the ball mill machine to mill into certain grain size. During the milling, some liquid such as water and ethanol, so the powder needs to be spray dried. After that, they will be compacted into different shapes and sizes. The compacted tungsten carbide is not strong enough, therefore, it needs to be sintered in a sintering furnace, which will provide high temperature and high pressure. Finally, tungsten carbide products need to be checked.

Usually, tungsten carbide products are composed of tungsten carbide powder and cobalt powder. According to the content of cobalt, tungsten carbide with cobalt powder as its binders can be divided into three types. They are high cobalt tungsten carbide with 20% to 30% cobalt, medium cobalt tungsten carbide with 10% to 15%, and low cobalt tungsten carbide with 3% to 8%. The amount of cobalt can’t be too high or too low. With too much cobalt in the tungsten carbide, it will be easy to break down. While there is too little cobalt in the tungsten carbide, it will be difficult to manufacture tungsten carbide products.

The tungsten carbide can be used to manufacture cast iron, non-ferrous metals, non-metals, heat-resistant alloys, titanium alloys, stainless steel, and so on. The tungsten carbide can also be manufactured into different kinds of tungsten carbide products, such as tungsten carbide wear parts, tungsten carbide buttons, tungsten carbide nozzles, tungsten carbide drawing dies, and so on.

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