The carbonized cutting tool is a powder metallurgy product. The main component of the tungsten carbide cutting tool is 50%~90% tungsten, and titanium, molybdenum, niobium, etc. are used as the binding agent for the cobalt powder, which is then heated and sintered. Carbonized cutters are harder than any other material, and they are three times harder than high carbon steels. They are suitable for cutting hard metals or stone materials. Because they are hard and brittle, they can only be made into sheets and then welded to be more flexible. On the tool shank, when such a blade is dulled or cracked, another blade or a new blade can be replaced. This enough tool is called a discarded turning tool.

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