Tungsten carbide is the most widely used type of high-speed machining (HSM) tool material produced by powder metallurgy, consisting of hard carbide (usually tungsten carbide WC) particles and a softer metal bond. composition. At present, there are hundreds of WC-based tungsten carbides with different compositions, most of which use cobalt (Co) as a binder. Nickel (Ni) and chromium (Cr) are also commonly used binder elements, and other additives can be added. Some alloying elements.
Why are there so many carbide grades? How do tool manufacturers choose the right tool material for a particular cutting process? To answer these questions, let us first understand the various properties that make tungsten carbide an ideal tool material.