Process of tungsten alloy

by Izzy X. Product specialist

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 all

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Powder ---- Mixing --- Pressing --- Sintering --- Heat treatment --- Plastic deformation (Forging, rolling) --- Annealing-Product
normally, the sintering temperature is higher than the liquid phase temperature by 20 to 60 .
quenching, rapid cooling, atmospheric dehydrogenation treatment and surface hardening treatment, the purpose is to reduce the segregation of P, S and other impurities at the interface, reduce hydrogen
Heat treatment can improve the mechanical properties of the alloy obviously.
In order to improve the mechanical properties of the alloy, various plastic deformation processes are carried out on the sintered high-density tungsten alloy.

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Review on Process of tungsten alloy

After dehydrogenation of high-density tungsten alloy by vacuum heat treatment, hydrogen embrittlement is weakened, phase boundary strength is improved, and the strength and plasticity of the alloy are greatly improved, which provides favorable conditions for high plasticization of the plastic deformation of the alloy. In the deformation strengthening process, the amount of deformation has a very important effect on the performance of the tungsten alloy. As the amount of deformation increases, the strength and hardness of the alloy increase, while the ductility decreases. In order to greatly improve the mechanical properties of the alloy, in recent years, a large deformation strengthening technology for high-density tungsten alloys has been developed. The strength of large deformation is increased by more than 300MPa than that of ordinary forging. For high-density tungsten alloy armor-piercing core materials with an aspect ratio of about 16 and a tensile strength of about 1200 MPa, one-time forging deformation strengthening can meet the requirements. For the new high-density tungsten alloy armor-piercing projectile in research and development, it must undergo multiple cycles of forging and deformation to meet the requirements.
Machining
After plastic deformation, the appropriate machining method can be selected according to the drawings, such as: turning, milling, cutting, drilling, polishing, etc.

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