Cutting of tungsten and its alloys
Tungsten is a refractory metal with high melting point (up to 3400° C), high density (19.32g/cm3), good chemical corrosion resistance and high high temperature strength. The tensile strength of sintered tungsten-rich alloy can reach 1700MPa. Because of its good mechanical and physical properties, tungsten has become a popular structural material in engineering, which is used to make parts and components with high temperature resistance.
It can be used as tungsten alloy filament in lamp and electron tube, tungsten alloy anode material in X-ray tube, tungsten alloy heat conduction material in high temperature furnace, tungsten alloy rocket nozzle and tungsten alloy heat insulation material, military balance tungsten alloy parts and manufacture flywheel. And tungsten carbide based carbide tool materials. Tungsten can be made into ingots or sintered into products. But they have poor machinability. Its cutting has the following characteristics:
Tungsten ingot machining, because of coarse grain, easy to produce block and make machining surface rough.
Tungsten has great chemical activity and strong affinity, and it is easy to produce nodules in cutting process, and the spalling of nodules will lead to the instability of the process. Tungsten is brittle at room temperature, and when cutting its sintered products, the chips become powder, and the hardness is very high, which intensifies the tool wear.
Tungsten alloy with better physical properties can be produced by adding iron, nickel, copper and other metals into tungsten powder. Such as tungsten nickel iron alloy, tungsten nickel copper alloy,tungsten molybdenum alloy.
We can adjust the alloy proportion of tungsten alloy according to customer's demand to meet customer's application requirements.
