tig steel with silicon bronze wire

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when  you weld with this stuff, how can it mix with parent metal when you feed the puddle with it? arent steel and the copper/tin -based alloy so different that they shouldnt be able to mix?
Reply:Think of it as braze welding. The sb filler does not actually penetrate the steel. Th ejoints are not as strong as a fusion weld, but you can make leak proof seams without distortion, and can travel very quickly.
Reply:Used some on cast iron, first time I started puddle on iron then added si bronze. The result was so hard it could not be machined. I now start arc on rod and a drop will melt off. Keep heating drop when hot enough it will wet out, then add in puddle and run it. Works great just took a couple times for me to figure it out. Works well on thin steel.PeterEquipment:2  old paws2  eyes (that don't look so good)1  bad back
Reply:Originally Posted by castweldUsed some on cast iron, first time I started puddle on iron then added si bronze. The result was so hard it could not be machined.Peter
Reply:ihave been playing with it.it works nice either way.. i can melt the filler onto the steel and then heat it up and get a flow, or i can make a puddle and feed it with the filer...so if the metals dont actually mix it is not really welding...?
Reply:3 ? would this work for thin walled stainless. Are migs able to do this this kind of weld. How narly is the final seam. Thinking of considering using this for stainless steel fermenters for beer.
Reply:Originally Posted by Teljkon3 ? would this work for thin walled stainless. Are migs able to do this this kind of weld. How narly is the final seam. Thinking of considering using this for stainless steel fermenters for beer.
Reply:I would imagine that the chromium oxide film on the surface would not allow for any brass or bronze fusion. The only joining methods I have used have been with stainless and silver solder.
Reply:dont want to hi jack a thread but as i dont know if a hobart 175 is capable of making a globular transfer arc or short circuit arc on stainless with walls as thin as i would be using for making fermenters. I am considering other options. When welding stainless for brewing purty is everything. low pitting & porasity to create staril welds is para mount. so i thought this may be a option to avoid all the problems of welding thin walled stainless using a mig  without purchasing a more expensive system or back gassing set up . structural sound welds are not as important as smooth welds with little discoloration that are water tight with no heat warping of the metal and copper allows are brew safe metals.If you look at Pro- Fabs first post I am 2 for three figured i see if i had the trifecta so thats why i would want to do it.    if I catch your drift Pro-fab I may be able to use silver wire on stainless??Last edited by Teljkon; 03-27-2011 at 05:54 PM.
Reply:Stainless can be silver soldered, but extreme care must be taken so that the base metal does not become over heated. I have used it a number of times on small pieces, but would hesitate to using on a long joint. Without specialized equipment to control the heat input, it is very easy to oxidize the surface. Once you do that, you have to stop, remove the oxides and start over. This is strictly for lap joints not butt welds.
Reply:i guess that silver wire would be another option but probably a bad one. Is the answer on using bronze wire definative?? Does it fall into the your nuts to try area or the wtf take a crack at it could work area?Guess what im asking is are you a world class metalurgist Pro - FabLast edited by Teljkon; 03-27-2011 at 06:01 PM.
Reply:Originally Posted by Teljkoni guess that silver solder would be another option the low heat is why the bronze wire really intrests me. Is the answer on using bronze definative?? Does it fall into the your nuts to try area or the wtf take a crack at it area.
Reply:flux=toxins=no good for beer.
Reply:According to this source, you can solder and/or braze stainless.  They suggest using high silver content brazing material, not silicon bronze.http://www.brewingtechniques.com/lib....6/palmer.htmlHow thin is the wall?  You might be able to MIG it with small wire.   Practice on scrap before you weld the real thing.If you have a TIG, why don't you just TIG weld it?  I probably missed part of the story somewhere in the thread.As far as I know, you can TIG, MIG, Stick or even oxy-acetylene weld stainless, you just need to look at the project, your available equipment, and your skills  I know that stainless is not commonly oxy-acetylene welded, but Kent White does it.http://www.tinmantech.com/html/stain...ing_suppli.phpRichardSculptures in copper and other metalshttp://www.fergusonsculpture.comSyncrowave 200 Millermatic 211Readywelder spoolgunHypertherm 600 plasma cutterThermal Arc GMS300 Victor OA torchHomemade Blacksmith propane forge
Reply:None of this makes any sense.You can MIG weld them together too. I live in wine country and it is done all the time.As far as structural requirements it has to be because sound because of all the weight of the liquid.TIG weld or MIG weld, and it is stronger than brazing. Less work and less time spent.Go visit a winery and look at the tanks and plumbing.AWS certified welding inspectorAWS certified welder
Reply:honestly has more to do with equipment capabilites than it does with best process. I am aware of the abilities of mig when properly configured to do the job i just dont know the limitations of my machine so I am collecting other feathers for my cap. Maybe you guys can tell me can a hobart handler 175 do globular transfer arc or short circuit arc. I am not really sure how thick it is raferguson but friends of mine have them and I will be getting a metal guage soon so i will mesure the gauge and get back to you on that one. I would venture to say thinner than cardboard and thicker than paper. The wieght requirments should be no more the 85 lbs.I started a spin off thread as the conversation has diverged from tig steel with silicone bronze.New thread http://weldingweb.com/vbb/showthread.php...594#post491594