Titanium alloy has high strength and low density, good mechanical properties, good toughness and corrosion resistance. In addition, titanium alloy process performance is poor, cutting difficult, in the hot processing, very easy to absorb hydrogen, oxygen, nitrogen, carbon and other impurities. There are poor wear resistance, the production process is complex. The industrial production of titanium began in 1948. The need of aviation industry development, the titanium industry at an average annual growth rate of about 8%. At present, the annual production of titanium alloy processing materials in the world has reached more than 40,000 tons, with nearly 30 grades of titanium alloy. The most widely used titanium alloys are Ti-6Al-4V(TC4),Ti-5Al-2.5Sn(TA7) and industrial pure titanium (TA1, TA2 and TA3).