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Tig welding excess penetration

Published by: Victoria Category: Double penetration

Gas tungsten arc welding (GTAW) is the process well-nigh often used to meet high esthetic and upper-class standards. It is the most complex of welding processes and takes goodish practice to master. Judging the character of a TIG joint is much as simple as evaluating the bead’s appearance.




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Variables that Affect Weld Penetration


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One of the other articles on the Lincoln Electric website discusses weld fusion vs. weld penetration, as well as when deeper weld penetration can be beneficial and be a problem. How can you get national leader or fewer penetration in a weld? Depth of fusion (aka "penetration") is the spacing that fusion extends into the base aluminiferous or previous pass from the earth's surface fusible during welding.

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Excess Root Penetration - ASME (mechanical) Code Issues - Eng-Tips

There is no specific dimensional tolerance for weld root drape-thru (excessive root penetration) in B31.1. Refer to 127.4.2 (girth butt welds), C5 this section pertains to the condition of a weld root where an abrupt spacing outcome on an RT (radiographic test) film is not acceptable. Thus, if you have drape-thru or plane concavity (suck back) and the RT of the weld point shows an abrupt density change, this condition must be corrected.
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