Explanation

Generally, it contains 85% -98% tungsten. alloy elements mainly include nickel, iron and copper. It is generally divided into two categories: tungsten nickel copper alloy and tungsten nickel iron alloy. high density tungsten alloys is usually made by powder mixing, pressing and sintering. In the sintering process, the sintering temperature is higher than the melting point of the phase of the matrix in the alloy to produce a liquid phase, which accelerates the sintering process of the alloy and makes the alloy densification rapidly and close to the theoretical density. high density tungsten alloys has high density, high strength, good plasticity and machinability, good conductivity and thermal conductivity. It has low expansion coefficient, good corrosion resistance and oxidation resistance, and excellent ray absorption ability. It is mainly used as materials of gyroscope rotor, materials of balance weight, materials of armour piercing bullet core, materials of tool and die fixture, shielding materials, materials of instruments and meters, etc.

Classification