Weld Cracking
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Freshman User
Joined: Dec 2001
Posts: 34
Likes: 0
From: Mesa, AZ
Weld Cracking
I'm trying to replace part of a post on my 48 F1 bed. I have a new section of post about 8" long. The section I'm replacing is in the middle of the post. When I (butt) welded it in place the bottom section keeps cracking as soon as it cools off. I tried to increase the area I was welding, but it still cracked. I am using a gas/acetylene setup. It's called a Henrob 2000. (a small diameter welder made for sheetmetal which uses 4 lbs of pressure on both oxy and ace). I'm using 1/16 copper coated rod. Obviously I am doing something wrong but I can't seem to find out what. Any ideas??
Posting Guru
Joined: Aug 2002
Posts: 1,214
Likes: 2
From: Minneapolis, MN
Weld Cracking
Try welding a bead (or 2 or 3 or more) across the butt joint perpendicular to the original weld. That way when the weld cools it'll pull the joint together and it spreads the heat out so there's less stress on the weld.
Thread Starter
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Freshman User
Joined: Dec 2001
Posts: 34
Likes: 0
From: Mesa, AZ
Weld Cracking
When the original weld broke, I ground off the area and used a coat hanger to redo it. It's been a week now and it's still holding.
I'll keep your idea in mind for the next weld break. With as much welding as I have to do on this bed there will be more breaks (I'm sure). Thanks for the tip
I'll keep your idea in mind for the next weld break. With as much welding as I have to do on this bed there will be more breaks (I'm sure). Thanks for the tip
