Technical Study for Improvement of Axial Density Uniformity of Doped Tungsten Rods after Vertical Melting Sintering AITranslate

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Chinese Library Classification Number:TG146.411[金属学及工艺—金属材料]

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After vertical melting sintering, the axial density of large unit-weight doped tungsten rods is low at the two ends and high in the middle, which leads to cracks and splits on the end surface of tungsten rods after rotary forging.Therefore, the scheme of reducing the local diameter of both ends of doped tungsten rods was proposed, and the optimal diameter reduction amount was determined.When the diameter of the two ends of doped tungsten rods decreases by 1.2~1.8 mm, the end density of tungsten rods after vertical melting sintering increases, the difference of the overall density distribution decreases, and the grain size of the restricted area is almost the same as that of the non restricted area.At the same time, the surface cracks after rotary forging are reduced, and the comprehensive processability of tungsten rods is improved.