Explanation of the meanings of the six letters P, M, K, N, S and H in cemented carbide

       The cutting range of P-type products refers to carbon steel, cast steel, including 0.25-0.25% C quenching and quenching and tempering, free-cutting steel including annealing and quenching and tempering, low-carbon alloy steel containing less than 5% of gold elements, high Carbon alloy steel, cast iron and tool steel, which contain annealing and quenching and tempering series
M type: The range is smaller in the M type. The stainless steel material includes ferrite/martensite, and the cast steel material includes martensite and austenite.
Class K: Hard alloy hardness in the K-class cutting range includes ferrite, pearlite gray cast iron, ductile cast iron, pearlite ferritic malleable cast iron. Type N: Type N refers to uncured aluminum, refined alloys, cast alloys, and copper alloys including free-cutting steel, brass, and electrolytic copper.
S category: S category refers to iron-based high-temperature alloys, superalloy materials containing nickel-based, cobalt-based; titanium-based, titanium alloys.
Class H: Class H refers to the blade cutting hardness range in hardened hardened steel, cast chilled cast iron, hardened cast iron, etc.

Cemented carbide classification: commonly used cemented carbides have WC as the main component. According to whether other carbides are added, they can be divided into the following three categories: (1) Tungsten-cobalt (WC+Co) cemented carbide (YG) (main Processing pig iron)
It is composed of WC and Co. It has high bending strength, toughness, good thermal conductivity, but poor heat resistance and wear resistance. It is mainly used for processing cast iron and non-ferrous metals. Fine-grained YG cemented carbide (such as YG3X, YG6X), when the cobalt content is the same, its hardness and wear resistance are higher than YG3, YG6, and the strength and toughness are slightly worse. It is suitable for processing hard cast iron and austenitic stainless steel. , Heat-resistant alloy hard bronze, etc.
2) Tungsten-titanium-cobalt (WC+TiC+Co) cemented carbide (YT) (mainly for processing wrought iron) Since TiC has higher hardness and melting point than WC, compared with VG, its hardness, wear resistance, redness The hardness increases, the bonding temperature is high, the oxidation resistance is strong, and TiO