钛和钛合金是近三十年迅速发展起来的一种新型工程材料。由于其比重轻,比强度高,在一定的温度范围内有良好的综合机械性能,以及在耐腐蚀方面的优异性能,因此不仅在军事工业中是不可缺少的结构材料,而且在民用工业领域内,如炼油、化工、冶金、能源、轻工、机械仪表、医疗器械、海洋工程等工业部门的应用也日趋广泛。近年来,随着钛及其合金的冶炼、加工技术的发展,价格的降低,以及综合机械性能、加工工艺性能和耐蚀性能的进一步完善,各工业部门使用的钛制设备也越来越多 Titanium and titanium alloy is a new type of engineering material that has developed rapidly in recent thirty years. Due to its light weight, high specific strength, good mechanical properties over a range of temperatures, and excellent corrosion resistance properties, it is not only an indispensable structural material in the military industry, but also in the field of civil industry , Such as oil refining, chemical industry, metallurgy, energy, light industry, mechanical instrumentation, medical equipment, marine engineering and other industrial sectors are also increasingly widespread. In recent years, with the smelting of titanium and its alloys, the development of processing technology, the reduction of price, and the further improvement of comprehensive mechanical properties, processing technology and corrosion resistance, more and more titanium equipments are used by various industrial departments