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Tips, Techniques, and Questions -- Technical questions or tips |
2013-03-10, 8:34am
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Senior Member
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Join Date: May 27, 2008
Location: Albion NY
Posts: 517
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Melting mandrels help
I have a customer who was haveing problems with the small 1/16 316l stainless mandrels melting and bending.
Wondering if I have a bad batch of stainless or if something else may be going on.
I using mandrels from the same lot with my hot head on propane with out issue, as most oxy/fuel setups produce a lot more BTUs expecialy working hard glass.
What might be going on?
I send a message to the customer and am waiting to hear back on what setup they are useing and other details.
At this point I'm trying to trubble shoot the problem.
This is the first time I have hear of this problem, after selling nearly 30lbs from the same material, batch number and everything.
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2013-03-10, 9:20am
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honorary bead lady
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Join Date: Jan 14, 2008
Location: Mostly the doghouse
Posts: 5,180
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User error plain and simple! It doesn't take much to burn thru a 1/16 mandrel
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2013-03-10, 9:32am
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I'm a lilac!
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Join Date: Jun 09, 2005
Location: Portland, Oregon
Posts: 8,793
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I used to burn through 1/16" mandrels all the time. My guess is the same as David's, but... a few years ago I got a different type of steel and I could hardly get it near a flame without it bending. So it's possible that your supplier slipped something in by mistake.
If that's the only complaint you've gotten, though, odds are that it's user error.
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-Kalera
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2013-03-10, 11:10am
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Senior Member
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Join Date: May 27, 2008
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Could be but, but ASME are fairly high for metal.
I'm hopeing its an isolated accuramce.
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2013-03-10, 2:33pm
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Senior Member
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Join Date: Apr 08, 2011
Location: NC
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I bought some from a very reputable seller here, and they melted straight through! I have had absolutely no problems with other stainless mandrels.
My experience was not user error - I doubt these were of a good grade of stainless steel.
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Barbara
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2013-03-10, 3:33pm
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Ass-kicking Cephalopod
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Join Date: Jun 19, 2006
Location: Duh, Squidville
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If your complainer is from San Diego, CA, then it's probably someone known for complaining to try to get stuff for free.
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2013-03-10, 3:52pm
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Senior Member
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Join Date: May 27, 2008
Location: Albion NY
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It was a Florida sale, from my research people use a number of alloys.
308 & 316 are the most common.
I realy doubt it was someone trying to scam me for a sale.
410 is a stronger alloy with higher melting temp but it's more likely to rust, and sizes are limited.
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2013-03-11, 12:38am
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one day at a time
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Join Date: Jun 27, 2005
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You can melt a mandrel using a Hothead if you let it get glowing hot for too long. I know, because I've done it, and they were definitely 316L. More than likely it's user error.
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You live in a world of money. Money means choices. No money, no choices. Welcome to reality.
Melody (Marlee Matlin) from Switched at Birth
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2013-03-11, 1:26am
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Alaska Boro
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Join Date: Dec 10, 2009
Location: Anchorage, Alaska
Posts: 1,065
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Stainless alloys are in the range of 100 C from the lowest to the highest. They melt in the range of 1400 - 1500 C. Carbon steel is in the same temperature range.
Would guess that the person is new to the art and has not mastered the use of smaller mandrels. Perhaps the use of 3/32 or 1/8 would help to get the technique down before moving to thinner and more difficult to work with mandrel sizes
Agree with the other statements that is it "user error".....
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