A Sintering Process High Density Tungsten Nickel-iron Alloy Preparation

The present invention discloses a method for preparing high density tungsten nickel-iron sintering process includes the following steps: 1) preparation: W content of tungsten powder> 99.95%; Ni content of nickel powder> 99.8%; Fe content iron of> 99.5% ; 2) Separator: Using a 200 mesh sieve, filtering the raw material powder; 3) with flour; 4) Die: The above mixed alloy powder filled in molded rubber bag; 5) cold isostatic pressing ; 6) Sintering: two-step sintering in hydrogen IF induction furnace sinter pass protection, divided into pre-sintered, solid-phase sintering, liquid phase sintering stages. Using the production process of the present invention, the processing of high-density tungsten nickel alloy has the following properties: tungsten nickel-iron alloy does not deform, even internal chemical composition and microstructure, relative density ≥99%; no internal cracks, bubbles and large crystals, machining excellent performance.


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