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Question about using a 1/4 inch backing plate on a 3/8 inch weld joint
I was working on a boiler repair in Toledo last week and the spec called for a 3/8 inch fillet. I was short on material and tried using a 1/4 inch backing plate instead of the proper thickness, thinking it would be fine for the root pass. The weld cracked under stress testing after 48 hours. Has anyone else run into this and found a workaround that actually holds up?
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brooke48416d ago
That Toledo boiler job sounds like a real headache...
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brown.reese15d ago
Thinner plate can't handle the heat or stress. It warps and pulls the weld apart. Seen it happen on truck frames all the time. You gotta match the thickness or go thicker. No real shortcut for that.
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