By -
Date 05-07-2006 17:58
Ok first off,,,this is gonna be cut with a beveling machine right? If so, lay your nipples flat, with your spacer in dead center. I use a 1/16 tied down and as my spacer. For the 2' id use a 1/16 with a small landing due to the fact your stinging it with a 32nd. When youve got your nipples tact up, be dead sure theirs no Hi/Low,,because your stringer will favor one side or the other,,,as im sure you know. after the first tack, its usually just an eyeball alignment after that,,,unless your workbench is level. You might take a couple levels just in case. My main concern in your test is everything after the stringer,,i think youll be fine on the tack up. Be sure to remember that from about 4 oclock to 8 oclock on your hot pass and filler,,,your rod angle is up,,,and which does heat travel? Dont forget to turn your machine down about 10-15 amps so as not to blow a hole, and keep your rod burried,,,no long arc on the bottom because you'll do nothing but gouge. Another thing is, in the past,,,ive seen lots of welders pass an X ray,,,but the bend proves everything. When your traveling down the pipe,,,MAKE DEAD POSITIVE that you do not long arc at all, because what this does is produce in the weld what inspectors call a silver streak,,,and you will break staps. Ive seen it all too often. Its broken many welders. On the 6g take anything you need to be comfortable, its not illegal and you wont fail. Others may laugh but youre not there to impress,,your there to pass. I usually take a piece of pipe,,,2" usually and run it through the nipples. Tack you a couple of pieces of strap or angle iron on the ends of the nipple so as to suspend the nipple around the pipe. Put it in any position that you feel comfortabl with,,,and go to work. Just remember not to long arc,,,and good luck
