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：2014
期号：ICIET
页码：1437
出版社：S&S Publications
摘要：Weld hardfacing is mainly employed forimproving wear, corrosion and heat resistant propertiesunder high pressure and high temperature condition. Theservice life of the hardfaced component is increased byachieving the desired surface hardness which isidentification to get the abrasive wear resistance. Themacrohardness is generally influenced by weldingprocess parameters such as welding current, weldingspeed, powder feed rate, plasma gas flow rate andoscillation frequency. Therefore, it is essential to developmathematical models for the selection of appropriatewelding process parameters that can predict the desiredweld macrohardness. This paper mainly focuses thedevelopment of mathematical models using five factor,five level factorial technique to predict macrohardness inhardfaced gate valve. Analysis of variance was used tocheck the adequacy of the developed models. Also theempirical models developed were checked by conductingconfirmation experiments. The effects of weldingprocess parameters on the macrohardness are presentedas graphs.
关键词：Plasma Transferred Arc Surfacing;Process; Stellite 6; and Macrohardness
