| The time now is Oct 15, 2008 - 11:54 PM |
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Post subject:low temp stainless welding
 Posted: Jul 12, 2008 - 05:28 PM #7729
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Joined: Dec 04, 2006
Posts: 10
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Fabricating 16 gauge stainless counters and hoods is a real chore because of all the effort that it takes to manage the heat. We have a top-notch Miller TIG welder, but to keep warping in line you cannot weld more than an inch at a time, then you need to air cool. Afterwards there's the nasty burn marks to deal with.
Is there a process out there wherein we can more easily keep the heat in check? Someone has mentioned laser, but I think that the cost is prohibitive. Any thoughts? |
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Post subject:RE: low temp stainless welding
Posted: Aug 14, 2008 - 04:53 AM #7759
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Joined: Feb 12, 2004
Posts: 2
Location: anchorage, ak
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you must be able to Tig like a machine faster the better.
Trick of the trade:
1.) For a counter tops butt weld shear the material "burr up" this will produce a slight turned up edge to ease your grinding and re-graining. In other words flip the material non exposed side up then shear.
2.) Use 3/32 2% thoriated tungsten shapened to a fine point.
3.) Tack weld the exposed side of the counter then tack weld the back side.
4.) Set your tig to a higher setting (I run about almost 100 amps)
5.) Adjust your tungsten so that the cup rests on the material to help keep the tip and your hand from moving around. You MUST be able to bury the tip as close to the seam (inside the crack) as possible with out fouling out.
6.) You must first weld the back side then the finished side as fast as possible. The quicker the weld the less heat will move around the welded area. Basically, a 36" deep counter top should be completely welded (both sides) in about 30 seconds.
If this is not possible some other options would be to weld a little at a time (3") and use a wet rag dipped from a bucket to cool the weld.
A corner to corner weld is the same idea except that I shoot the arch across the seam fusing the material together.
Hope this helps!!!! |
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Post subject:RE: low temp stainless welding
Posted: Sep 28, 2008 - 07:13 AM #7861
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Joined: Feb 17, 2007
Posts: 40
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| i posted some tips about this in the finishing metal sections.. |
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