由于比强度高和耐蚀性好,钛及钛合金是航空、宇航工业上十分重要的结构材料。随着加工、焊接技术的发展,钛及其合金在国民经济各个领域里的运用,正越来越广泛。我国钛矿资源比较丰富,在钛及其合金的生产、应用方面已有一定的基础,但与国际先进水平比,差距还较大,因此,研究钛及其加工技术是一项极其重要的任务,而在钛加工中,焊接是一 Due to its high specific strength and good corrosion resistance, titanium and titanium alloys are very important structural materials for the aerospace and aerospace industries. With the development of processing and welding technologies, the use of titanium and its alloys in various fields of the national economy is becoming more and more widespread. Titanium resources in China are abundant, and there is a certain foundation for the production and application of titanium and its alloys. However, the gap with the international advanced level is still relatively large. Therefore, research on titanium and its processing technology is an extremely important task , While in titanium machining, welding is one