Influence of Mn contents in 0Cr18Ni10Ti thin wall stainless steel tube on TIG girth weld quality

17th IUMRS International Conference in Asia

Liu, Bo^1

CNNC Jianzhong Nuclear Fuel Co. Ltd., Sichuan

644000, China^1

关键词: Element contents;    Girth welding;    Manganese content;    Stainless steel tube;    Weld penetrations;    Weld quality;    Welding conditions;    Welding defects;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012018/pdf
DOI  :  10.1088/1757-899X/182/1/012018

来源: IOP

【 摘 要 】

Three kinds of cold worked 0Cr18Ni10Ti thin wall stainless steel tubes with the manganese contents of 1.27%, 1.35% and 1.44% and the cold worked 0Cr18Ni10Ti stainless steel end plug with manganese content of 1.35% were used for TIG girth welding in the present investigation. The effect of different manganese contents in stainless steel tube on weld quality was studied. The results showed that under the same welding conditions, the metallographic performance of the girth weld for the thin wall stainless steel tube with the manganese element content 1.44% welded with end plug was the best. Under the appropriate welding conditions, the quality of the girth weld increased with the increase of the manganese content till 1.44%. It was found that in the case of the Mn content of 1.44%, and under the proper welding condition the welding defects, such as welding cracks were effectively avoided, and the qualified weld penetration can be obtained.. It is concluded that the appropriate increase of the manganese content can significantly improve the TIG girth weld quality of the cold worked 0Cr18Ni10Ti stainless steel tube.