Experimental Research on Modern Methods of Welding Pipelines Using Base Materials X60 and X70

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Abstract:

The aim of the research is to highlight the properties of the welded joints of the steels that are used for mains X60 and X70. X60 and X70 steels were welded by automatic welding procedure (STT) at the root and also by automatic MIG procedure for the filling layers. Thereby an increase between 6 15 [%] of the weld bead hardness was obtained in the case of the X 60 steel welding. An increase of bead fracture strength was also noticed from 570 [N/mm2] X 60 steel to 646 [N/mm2] X70 steel.

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Solid State Phenomena (Volume 216)

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298-303

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August 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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