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Old September 3rd, 2013, 08:53 PM   #15
chadcooper55
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Default Welding Cast Iron Advice

Quote:
Originally Posted by HVYRTFT View Post
Why are we peening it? Please explain.
The metal is brittle and any added tension can cause cracks as it cools. You peen it when it is hot to de-stress the weld so it isn't as prone to cracks.
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