Cemented carbide blades are made of cemented carbide. Cemented carbide is an alloy material made from hard compounds of refractory metals and bonding metals through powder metallurgy.
Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which remain basically unchanged even at a temperature of 500°C , It still has high hardness at 1000℃.
Cemented carbide blades are mainly made of solid cemented carbide as the matrix, which is processed through multiple production processes.
Cemented carbide, also known as tungsten steel, is made of high-quality tungsten carbide + cobalt powder, mixed with a formula, and then pressed and sintered. 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, cemented carbide tools play a fundamental role in promoting the development of manufacturing.
Cemented carbides are distinguished by grain size, and can be divided into ordinary cemented carbides, fine-grained cemented carbides, sub-fine and ultra-fine-grained cemented carbides, and the newly launched double-crystal cemented carbides. 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 rare carbide (YW). They have their own advantages and disadvantages. The main components are tungsten carbide (WC) and titanium carbide ( Tic), niobium carbide (NbC) and other commonly used metal bonding phase is Co. Titanium carbide-based cemented carbide is a cemented carbide with Tic as the main component, and the commonly used metal bonding phases are Mo and Ni. Cemented carbide has high hardness (86~93HRA, equivalent to 69~81HRC), second only to diamond, good thermal hardening (up to 900~1000℃, maintain 60HRC); high bending strength (MPa5100), good impact toughness And the chemical inertness with high corrosion resistance and other characteristics that ordinary alloy blades do not have.
