Hardness And Toughness of Tungsten Carbide Cutting Tool

Tungsten carbide is the most widely used type of high speed machining (HSM) cutting tool material, this kind of material is produced by powder metallurgy process, and consists of hard carbide particles (usually a tungsten carbide WC) and the soft metal bond. At present, there are hundreds of different composition of WC cemented carbide, where cobalt (Co) are used as the binder, nickel (Ni) and chromium (Cr) is also a common bond element. In addition, you can also add other alloying elements. Why there are so many carbide grades? Cutting tools manufacturers how to select the right cutting tool material for a certain cutting machining?

The hardness and toughness WC-Co tungsten carbide has the unique superiority in both hardness and toughness. Tungsten carbide (WC) itself has the very high hardness (more than corundum or aluminum oxide), and its hardness is rarely drop when work temperature become higher. However, it lacks enough toughness, which is essential for a cutting tool performance. In order to use the high hardness of tungsten carbide, and improve its toughness, people will use metal bond tungsten carbide together, so that the material has far more than the hardness of high speed steel, at the same time, it can withstand cutting force in most machining. In addition, it also can withstand the cutting heat generated by high speed machining.

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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