Hardmetals are mainly used in high abrasive, diffusion and adhesive wear conditions as tools and wear resistant parts. To save expensive hardmetals (cermets) and simplify the design of complicated tools and wear parts for improving their reliability (and a decrease in manufacturing costs), bimetallic compounds "hardmetal + steel" and "cermet + steel" can be used. Fair durability of these bimetals depends on the quality of the joint between hardmetal and steel. So far bimetallic tools have been most widely produced by the brazing process. In many complicated working conditions - fluctuating and dynamic loads, diffusion welding or bonding is used [1,2]. Diffusion welded or brazed with steel WC-based bimetals have high strength and durability. In many cases, products working in wear with prevalence of adhesion wear hardmetals or cermets on the basis of titanium carbide with Ni-Mo or steel binder are used as well. Cermets on the basis of chromium carbide with Ni-binder have good corrosion and wear resistance and low density.
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