Cemented carbide inserts are mainly made of solid carbide as the base body, and are finished by multiple production processes.
Cemented carbide, also known as tungsten steel, is made of high-quality tungsten carbide + cobalt powder after mixing by formula and sintering. It has high hardness, high strength, high wear resistance and high elastic modulus. It belongs to the powder metallurgy industry. . As the teeth of modern industry, carbide cutting tools play a fundamental role in promoting the development of the manufacturing industry.
Cemented carbides can be divided into ordinary cemented carbides, fine-grained cemented carbides, sub-fine and ultra-fine-grained cemented carbides, and newly introduced twin-crystal cemented carbides according to the grain size. According to the main chemical composition, it can be divided into tungsten carbide-based cemented carbide and titanium carbide-based cemented carbide. Tungsten carbide-based cemented carbides include tungsten-cobalt (YG), tungsten-cobalt-titanium (YT) and added rare carbides (YW). The commonly used metal bonding phase such as Tic) and niobium carbide (NbC) is Co. Titanium carbide-based cemented carbide is a cemented carbide with Tic as the main component, and the commonly used metal bonding phases Mo and Ni. Cemented carbide has high hardness (86~93HRA, equivalent to 69~81HRC), second only to diamond, good hot hardness (up to 900~1000℃, maintaining 60HRC); high flexural strength (MPa5100), good impact toughness and chemical inertness with extremely high corrosion resistance and other characteristics that ordinary alloy blades do not have.
