Titanium sponge and intermediate alloys. Electron beam cold hearth melting is performed at a vacuum of 1.3X103Pa or higher: elements with high vapor pressure, such as aluminum, tend to evaporate in the high vacuum atmosphere of electron beam melting and must be added to compensate for their loss of volatilization. At present, the ingots produced by electron beam cold hearth melting can weigh up to 22.7t and can produce round and square ingots. The common ingot size of industrial pure titanium or unalloyed titanium is 660mm X1320mmX4000mm and the weight is 16t. The melting capacity of pure titanium and titanium alloy was 3.6t /h and 2.3/h respectively. The final yield of titanium plate is 71%. When the output is large and the plate is thick, the yield from ingot to titanium plate can reach 80%. Yield is an important parameter to determine final cost and final rolling price. The test results show that the tensile properties of the longitudinal and transverse specimens at the end of titanium plates exceed the mil-t-9046j ab-1 and mil-dtl 46077F standards. Generally, titanium plate for structural application needs solution treatment and aging treatment. However, for armor application, it is found that annealed structure has the best bulletproof performance. www.lcalti.com studied the influence of annealing temperature on the bulletproof performance of ti-6al-4v alloy, and evaluated the impact of different thermometers on the bulletproof performance of ti-6al-4v alloy. The results show that cross rolling is better than general rolling for the elastic resistance of plate. Being rolled better in a + beta zone than in a beta zone; Non-annealed is better than annealed, alpha + beta annealed is better than beta annealed, once the beta annealed, then in the alpha + beta annealed, can not restore the material properties; Better in rolled or annealed state than in solution or aging state.