What is the coefficient of thermal expansion of cemented carbides?
[classification of cemented carbide]1, tungsten cobalt carbide: the main component is tungsten carbide (WC) and binder cobalt (Co). The brand is from "YG" ("hard cobalt" Pinyin prefix) composition and percentage of average amount of cobalt.2, tungsten titanium cobalt carbide: the main components are tungsten carbide, titanium carbide (TiC) and cobalt. The grade by "YT" ("hard ti" Pinyin prefix) and the average content of titanium carbide.3, tungsten titanium tantalum (NB): hard alloy is the main component of tungsten carbide, titanium carbide, tantalum carbide (or niobium carbide) and cobalt. thisThis kind of hard alloy is also called universal cemented carbide or universal hard alloy. The grade by "YW" ("hard", "million" Pinyin prefix) and sequence number.
Carbide is also divided into many grades, so the coefficient of thermal expansion is not exactly the same.
[cemented carbide] an alloy material made from powder metallurgy by hard metals and bonded metals of refractory metals. Hard alloy with high hardness, strength and toughness, good wear resistance, heat resistance, corrosion resistance and a series of excellent performance, especially high hardness and wear resistance of it, even at a temperature of 500 DEG C also remained unchanged, at 1000 degrees C still have high hardness. Hard alloy is widely used as a tool material, such as turning, milling, planing, drilling, boring, used for cutting cast iron, non-ferrous metals, plastics, chemical fiber, graphite, glass, stone and steel, can also be used for cutting steel, stainless steel, high manganese steel, tool steel and other hard processing materials.
The thermal expansion coefficient of cemented carbide is about 6*10^ (-6) / C, and there is a slight difference according to the type of cemented carbide
