GB4237 0Cr18Ni10Ti stainless steel pipe has lots of elements, but some elements has an important role. Such as Mn element, it has impact the quality of GB4237 0Cr18Ni10Ti stainless steel pipe. Katalor as a professional GB4237 0Cr18Ni10Ti stainless steel pipe exporter, we can solve your any requirements.
Three kinds of cold worked GB4237 0Cr18Ni10Ti stainless steel pipe 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. The effect of different manganese contents in GB4237 0Cr18Ni10Ti stainless steel pipe on weld quality was studied. The results showed that under the same welding conditions, the metallographic performance of the girth weld for the GB4237 0Cr18Ni10Ti stainless steel pipe 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 GB4237 0Cr18Ni10Ti stainless steel pipe.
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