Cemented carbide used for drilling is mainly tungsten carbide (WC)-cobalt (Co) type pressed alloy. Its main component is tungsten carbide. It uses tungsten carbide powder as the skeleton and cobalt powder as the cementing agent. It is pressed and sintered into various types through powder metallurgy methods, and is inlaid and welded on the drill bit body to make various types of drill bits. This type of cemented carbide is collectively called YG cemented carbide, also known as tungsten-cobalt alloy.
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