Hey guys. I've been reading for awhile,first time thread.
Need to repair an equipment roller made of cast iron. Any suggestions?
I have some hobart 99 but I read somewhere else it should only be used as a single pass. Use 99 for the root and Hobart 55 for the cover passes. Also should I preheat the whole thing or just around the weld area. The ground out area was a crack and on the broken side I want to replace with hot roll.What can I do to attach hot roll to cast?
TJ
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Thread: Cast Iron Repair
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08-14-2006, 01:10 PM #1
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Cast Iron Repair
Miller Syncrowave 250
Miller CP 200 w/S21-E & Spoolmatic 3
Miller Bobcat 225
Hobart R-300
"There are two kind of people in this world. Those who can weld and those who can't." Jesse James
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08-14-2006, 02:12 PM #2
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If you are sure its cast iron just use a good Ni cast iron rod. If it is cast steel use 7018. Be sure to give it a little preheat before welding...Bob
Bob Wright, Grandson of Tee Nee Boat Trailer Founder
Metal Master Fab Salem, Oh 44460
Birthplace of the Silver & Deming Drill
1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
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08-14-2006, 06:06 PM #3
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Kinda looks like steel to me. Shiney bluish tint where it's clean ground. Maybe a forged steel or cast steel part. If it is iron and you have to pre and post heat make sure you isolate those rollers if they have bearings in them.
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08-15-2006, 07:38 AM #4
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I think you guys nailed it. Cast steel. Did a spark test and sparks just like steel. What about tig on cast steel? TJ
Miller Syncrowave 250
Miller CP 200 w/S21-E & Spoolmatic 3
Miller Bobcat 225
Hobart R-300
"There are two kind of people in this world. Those who can weld and those who can't." Jesse James
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