What tools have both toughness and wear resistance
Ceramic tool is formed by oxidation of aluminum powder, adding a small amount of elements, followed by high temperature sintering, the hardness, heat resistance, cutting speed ratio of tungsten carbide is high, but because of the brittle, so it is not suitable for the non continuous or heavy turning, only suitable for high speed precision cutting.
Sintered carbide tool:Carbide tools for powder metallurgy products, tungsten carbide cutting tool is mainly composed of 50%~90% tungsten, and add titanium, molybdenum, tantalum and other cobalt powder as binder, and then completed by heating sintering. Carbide tool hardness than any other materials are high, three times the most hard of high carbon steel, suitable for cutting hard metal or stone, because of its hard brittle material, it can only be made into slices and then welded to handle more toughness, so cutting edge passivation or crack, can replace another knife or mouth a new blade, this tool is called disposable tool enough.
Non cast iron alloy cutter:This is the alloy of cobalt and chromium and tungsten, because it is difficult to machining, casting to manufacture, so called super hard alloy casting, the most representative is Stellite, its tool toughness and wear resistance is excellent, at the temperature of 8200C the hardness is not affected, far beyond the thermal high speed steel, suitable high speed and deep cutting work.
High-speed steel:High speed steel is a steel alloy tool and common white, adding W, Cr, V and Co alloy elements such as carbon carbon content in 0.7~0.85%. For example, 18-4-4 high speed steel material containing 18% tungsten, chromium and vanadium of 4% high-speed steel. High speed steel cutting tool in the friction heat can be as high as 6000C, suitable for the speed of 1000rpm and the following thread turning, commonly used in high speed steel tools such as SKH2, SKH4A, SKH5, SKH6, SKH9, etc..
High carbon steel:High carbon steel turning tool is a kind of carbon steel with carbon content of 0.8%~1.5%, which is used after quenching and hardening. Because of the friction in the cutting process, it is easy to be tempered and softened by four. Generally only suitable for cutting soft metal materials, commonly used SK1, SK2,,, SK7, etc..
