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ROOT PASS IN PIPE NOT PENETRATING 100%

by CHRIS
(SOUTH CAROLINA)

HEY JODY! NICE SITE MAN, ALOT OF GOOD INFO. I HAVE RAN INTO A PROBLEM PUTTING A TIG ROOT PASS IN 6IN SCH 40 CARBON STEEL PIPE. IM RUNNING ABT 105 AMPS WITH STRAIGHT ARGON WITH A DRY TIG RIG. TUNGSTEN PEN POINT SHARP. USING 3/32 FILLER TIG ROD. I HAVE TRIED A 3/32 AND 1/8 GAP WITH A FEATHER EADGE. THE APPEARS ON THE OUTSIDE LOOKS GOOD, BUT THE INSIDE LOOKS LIKE I TOOK A GRINDER AN CUT A GROOVE IN MIDDLE OF, NOT PENETRATING. IM USING THE FORWARD AN BACK MOTION. ANY IDEAS? THANKS JODY IF YOU CAN HELP ANY.

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some things to look at....

make sure the bevel is right...it should be around 35-37 degrees give or take...too tight a bevel is like too big a land or too tight a gap.


make sure your electrode is extended enough to hold a pretty tight arc length.

also pay attention to angle of electrode...too much angle is bad.

good luck,

jody

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