A guy in Omaha told me my weld prep was all wrong for 1-inch plate

I was tacking up a big pressure vessel section and this older welder, Frank, walked by and said my bevel angle was way too shallow. He said at 30 degrees I was asking for lack of fusion in the root pass, and that for plate that thick I needed a tighter 22.5-degree bevel with a smaller land. I switched it up on the next joint and the X-ray came back clean. Anyone else had a basic technique they thought was fine until someone called them out on it?

3 comments

3 Comments

the_anthony22d ago

Yeah that "bevel angle too shallow" thing... I ran into that on some 3/4 inch. My old boss saw my setup and just shook his head. Had me close it up to a real sharp angle and the difference was night and day.

ray_webb622d ago

Real sharp angle" is the key. Learned that the hard way too.

jesse_barnes3722d ago

Actually it's more about the bevel angle being too wide.