Technique method for improving density of injection molding high-speed steel columnar deposition blank
A process method and high-speed steel technology, applied in the field of material processing, can solve problems such as confidentiality, and achieve the effects of high strength, fine grain size and improved service life
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[0025] Example one
[0026] The composition of the high-speed steel master alloy material used is (wt%): C1.5; W12.3; Co4.66; V5.2; Cr 4.16; Mo 0.22; Fe.
[0027] The main operation process of spray forming is: Put the high-speed tool steel master alloy material into a vacuum induction furnace, heat and melt; keep it at a temperature of about 180℃ higher than the melting point of the alloy for 10 minutes to make the composition and temperature of the high-speed steel melt in the induction furnace Achieve uniformity; the alloy melt is slowly poured into the heated tundish at a certain speed, and the temperature of the tundish is higher than the melting point of high-speed steel by ~100℃. High-pressure and high-purity N is used in the atomization chamber through the atomization nozzle 2 The alloy melt flowing out of the draft tube is atomized into fine droplets, where N is used for atomization 2 The pressure is about 2.4MPa, the spray distance is about 350mm, and the gas / melt (G / M) ...
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