2" sch 80 tig root 7018 cap 6g test help
I am 35 years old and done some stick and mig welding over 10 years ago back when I done paint and body. I have been an operator at a coal fired power plant for the last 4 years and I transfered to a boiler mechanic at the first of the year at the same plant. They want me to get my state license here in Oklahoma (steam card) so I can take all their tests and be a welder for them. The bad news is I never done any tig welding before. So I started going to a night welding school to learn how. The school started around the first of the year and is now almost over and I am still having trouble with the root pass. I can do the hot pass and the cap but I need help with the root. I know practice makes perfect. At first I was doing it with a tight 3/32 gap, 3/32 wire and around 75 amps with the keyhole dip technique. The problem I was having was not getting in far enough. After practicing every day I am now using a loose 1/8 gap, 1/8 filler rod and 90 amps. With the lay wire technique. But I have just gone the complete opposite. Now I have way to much root inside. I am using a feather edge with 37 1/2 bevel. I will try to post pics. Any info on gap and amps or technique would help. Thanks.
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