What are the common kinds of cemented carbides?
The grade by "YW" ("hard", "million" Pinyin prefix) and sequence number, such as YW1. (2) grade, composition, performance and application of commonly used hard alloy (see table below) categories of chemical composition of W/% grade performance scope of tungsten cobalt alloy YG3X 96.5 - < 0.53 for cast iron, nonferrous metals and alloy fine boring, fine car, can also be used for fine machining of alloy steel, Quenched steel and tungsten and molybdenum materials; high tungsten carbide content, binder content is low, its high hardness, flexural strength is low; therefore, YG3 is suitable for finishing; whereas the YG15 can bear larger load, suitable for roughing. Suitable for cast iron, nonferrous metals and alloys and non metallic materials roughing during continuous cutting, interrupted cutting of the semi refined car, fine car for percussive rotary drilling machine drilling hard rock, containing coal cutter teeth, hard rock drill, well drilling hard rock percussion drill bit, stamping die, planer and knife for percussive rotary drilling machine and other chisel hard and extremely hard rock, in the epidermis processing great work under stress perforation and stamping tools tungsten titanium cobalt alloy YT5 855 - 10 for carbon steel, alloy steel, forging, stamping, casting, uneven section, rough turning, discontinuous cutting the rough plane semi finishing.
Cemented carbide is a hard particle of refractory metals (tungsten, tantalum, titanium, molybdenum, etc.) that is mixed with one or more iron elements (cobalt, nickel, or iron), pressed and molded, and then sintered. Types and properties of cemented carbides: (1) classification and grade of cemented carbides. Tungsten carbide cobalt carbide is mainly composed of tungsten carbide (WC) and binder cobalt (Co). The brand is from "YG" ("hard cobalt" Pinyin prefix) composition and percentage of average amount of cobalt. For example, YG8 is a tungsten cobalt carbide that represents an average WCo = 8% and the remainder is tungsten carbide. Tungsten carbide cobalt carbide is mainly composed of tungsten carbide, titanium carbide (TiC) and cobalt. The grade by "YT" ("hard ti" Pinyin prefix) and the average content of titanium carbide. For example, YT15 represents an average WTi = 15%, while the others are tungsten titanium cobalt carbide with tungsten carbide and cobalt content. The tungsten titanium tantalum (NB) hard alloy is the main component of tungsten carbide, titanium carbide, tantalum carbide (or niobium carbide) and cobalt. This kind of hard alloy is also called universal cemented carbide or universal hard alloy.
