Process of high-density tungsten alloy
High-density tungsten alloy, also known as tungsten-based heavy alloy, is a type of alloy made of tungsten as the matrix element (85% ~ 99% mass fraction) with the addition of Ni, Cu, Fe and other alloy elements by liquid phase sintering. The density is up to 16.5 ~ 19.0g / cc. The most commonly used are tungsten nickel copper and tungsten nickel iron alloy with tungsten content of 90% -97%. Tungsten nickel copper alloy is a non-magnetic alloy, while tungsten nickel iron is a magnetic alloy. W-Ni-Fe series alloys are widely used because they have better mechanical properties than W-Ni-Cu series alloys. High-density tungsten alloy is traditionally prepared by powder metallurgy, and its sintering process is as follows: Powder ---- Mixing --- Pressing --- Sintering --- Heat treatment --- Plastic deformation (Forging, rolling) --- Annealing-Product Some products can also be directly obtained by sintering. Sintering The sintering of high-density tungsten alloys mostly adopts liquid phase s...