I am looking for an AWS instruction, if one exists, that specifies the required/allowed cup size when using 1/8" Tungsten while welding aluminum. I am trying to change an instruction for performing structural maintinence on LCACs. Our procedure calls for the usage of a 1/2" cup with a gas lense (a #8) while using 1/8" Tungsten. This makes our job incredibly hard while doing repairs out of position and in confined spaces and inhibits seeing the puddle. But when using a #5 cup our job becomes much, much easier. Any help or insight would be greatly appreciated.
Who is telling you that you can't use a smaller cup in order to gain access to difficult places?
What is their reasoning?
What is an LCAC?
Are your current procedures based on a welding code? if yes which one?
Below are two AWS publications they might apply.
AWS C5.5 RECOMMENDED PRACTICES FOR GAS TUNGSTEN ARC WELDING
AWS D1.2/D1.2M:2003, Structural Welding Code-Aluminum
HTFNLAND,
Hello fellow HT! What code are you welding to? Are you welding IAW Mil-Std-1689A? You have to look at your weld procedure and see what code it refers you to and then you can find out what information you need. Also you can seek giudance from your weld engineer.
Chris
Topic American Welding Society Services / Technical Standards & Publications / Looking for an AWS instruction, any help appreciated
