Method for preparing low-oxygen high-quality hydrogenated and dehydrogenated titanium powder

Abstract

The invention discloses a method for preparing low-oxygen high-quality hydrogenated and dehydrogenated titanium powder, and belongs to the field of powder metallurgy titanium. The method comprises thefollowing steps of by taking sponge titanium, waste titanium, titanium chips or residual titanium leftover materials and the like as a raw material, performing hydrogenation dehydrogenation, adding TiCl2 as a deoxidant, uniformly mixing TiCl2 and titanium powder, and performing annealing treatment, so that the TiCl2, the hydrogenated and dehydrogenated titanium powder and an oxidation film on thesurface of the powder are subjected to oxidation-reduction reaction, gaseous TiClxOy is generated, and the oxygen is removed from the titanium powder, so that the effects of greatly reducing the oxygen content of the titanium powder and purifying the powder are achieved; and in addition, due to the addition of TiCl2, other impurities cannot be introduced to change the characteristics of the titanium powder. The preparation process is simple, extra equipment is not needed, the price of the deoxidant is low, preparation of high-quality and low-cost titanium powder is facilitated, the recyclingrate of residual titanium is greatly increased, and the method has great significance in low-cost preparation and green recyclable generation of titanium industry.

Description

technical field [0001] The invention belongs to the field of powder metallurgy titanium and provides a method for preparing low-oxygen and high-quality hydrodehydrogenation titanium powder. Background technique [0002] Titanium metal has a series of advantages such as low density, high strength, good corrosion resistance, and high biocompatibility, and has great application prospects in aerospace, marine, medical, and chemical industries. However, the expensive production cost of traditional fused-cast titanium alloys limits its large-scale application, mainly due to the complicated thermal processing process (accounting for about 50% of the total cost) and low material utilization rate (20-50%). At the same time, in order to obtain titanium products with complex shapes, further deep processing is often required, resulting in a large amount of waste of titanium materials, and a large amount of titanium shavings, waste titanium, and residual titanium scraps. At present, the...

AI Technical Summary

Problems solved by technology

Although this method can reduce the oxygen content of hydrogenated dehydrogenation titanium powder from several thousand ppm to hundreds of ppm, the equipment and process are complicated, and the use of active metals has certain safety hazards, and further increases the cost of powder making