期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
期号：NCIIME
页码：167
出版社：S&S Publications
摘要：Tungsten inert gas (TIG) welding is the most popular gas shielding arc welding process used in manyindustrial fields. Other arc welding processes have limited quality when they are compared to TIG welding processes.However, TIG welding also needs improvements regarding spatter reduction and weld quality of the bead. Shieldinggas in TIG welding is desirable for protection of atmospheric contamination. TIG welding process has the possibility ofbecoming a new welding process giving high quality and provides relatively pollution free.A387 Grade 12 chromemoly steel is a boiler plate steel according to the ASTM/ASME standard A387/A387M.A387 Grade 12 is designed foruse in pressure vessels and heat exchangers where there is an elevated temperature.it is described as an alloyed hightemperature pressure vessel steel. The addition of chrome and molybdenum in the steel making makes this platesuitable for use at high temperatures whilst also giving them some corrosion resistant properties. whilst not as corrosionresistant stainless steels, chrome moly plates in the A387 family are often a cost effective substitute in lower risk areas.
