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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Sweat Brazing?
On 09/13/2010 06:52 AM, Winston wrote:
On 9/12/2010 3:16 PM, Tim Wescott wrote: Needed to join two pieces of mild steel today, with minimal bead and as strong or nearly so as the parent metal. (...) My understanding is that one must provide a lap surface that is some largish multiple of the material thickness. Ferinstance I would go with say, 0.5" wide lap, joining 0.03" thick material. Yes, I was going off my soldering instincts, so there's about 1 square inch of area to stick some 1/8" plate onto a 1/16" wall tube. See, for example lugged frame construction in bicycles. Actually I've seen frames that are brazed with no lugs. The claim was that if you're hand brazing you can do a fillet to get all the strength you need. (Lugs were for hairy-knuckled factory workers in England and Italy who stuck whole frames into furnaces). I don't know if that's for real, but they were certainly the bees knees for a while back in the 1980's. -- Tim Wescott Wescott Design Services http://www.wescottdesign.com Do you need to implement control loops in software? "Applied Control Theory for Embedded Systems" was written for you. See details at http://www.wescottdesign.com/actfes/actfes.html |
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