Brass Pan

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A print showed up at the shop the other day along with a note when could it be picked up Good customer soooo Oh chit here we go. I dropped Zap a line about his helpful hints on tig welding brass.Thanx Zap. I have done small things shafts bearing surfaces ect.. but nothing on this scale. The pan is 1/8in 48x47 2in lip and 5 handles. Iam not showing this because of my brass welding not so good skills. I thought it turned out ok but maybe it will help someone out that may be tig welding brass what to kinda expect. 200 Amps. A/C 3/32 Pure tungsten.Silicon bronze 1/16 rod Argon 25-30 on the gas flow meter. Notes. It takes alot to get the puddle started like 200 amps then I rocked the pedal as I went using less amps.It twists and moves like crazy I clamped,held down with everything I had.After I removed the torch I could physicaly see it change shape and move and go back to normal state while cooling I only welded in short 2-3in increments to keep from warping.The stuff smokes bad I used a mask and plenty of ventalation. In the pic you can see what it looks like white powder and black ring unlike a good normal tig weld should.but seem to wet in nice with good penetration. I found the cleaning control didnt seem to make much dif so I set it at 50 middle.I will say it welds alot like aluminum and yet not really. I tried dc settings and 2% tung no luck spitting making a mess.Maybe I was doing something wrong?? Open for suggestions.Hope I have not left anything out ask away. Dale Attached ImagesMiller 250DX HTP 221 DV AC/DCHenrob O-A Miller 180 MigMiller 150 Inverter   Hobart 10,000 Welder-Generator   Have a good day!!!
Reply:The pics of the welds are brushed and unbrushed to show the white powder and black ring. The pan is for a manufacture to catch slag and filings from a machine that will not cause a electrical hazard.Last edited by power; 05-29-2013 at 11:58 PM.Miller 250DX HTP 221 DV AC/DCHenrob O-A Miller 180 MigMiller 150 Inverter   Hobart 10,000 Welder-Generator   Have a good day!!!
Reply:Looks good. Too bad you couldn't have folded the tray and just welded the corners. After welding did the brass work well or did it harden?
Reply:Better you than me. Looks good from here! City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:Originally Posted by forhireLooks good. Too bad you couldn't have folded the tray and just welded the corners. After welding did the brass work well or did it harden?
Reply:Originally Posted by powerI agree, could not find a brass sheet large enough. The brass stayed in a nice state did not seem to harden. I was concerned with that myself the way I understand it it will be cleaned daily I will follow up and see what the future holds after it has had hot slag dropped in it after awhile what condition it stays.It is going to take some husky guys to move this if it has slag and filings in it. Thanx Dale
Reply:Neat.  White powder could be zinc oxide, coming from the zinc in the brass.  Good move on the mask and ventilation.Wonder why the customer spec'ed brass instead of something like stainless.  Maybe for better thermal conductivity?
Reply:Was soldering an option?
Reply:Originally Posted by powerThe pics of the welds are brushed and unbrushed to show the white powder and black ring. The pan is for a manufacture to catch slag and filings from a machine that will not cause a electrical hazard.
Reply:Looks like you have a winner!Looks good to me..Glad I could help.By The Way..400 series stainless is  magnetic....zap!Last edited by zapster; 05-31-2013 at 09:42 AM.I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Thanks for all the replys!! I do not know why the company picked brass for a material? I was told they were using a steel tray and it would somehow short out a welder Iam thinking it must be a robotic unit? Idk but will see if I can get a pic and more info to clear things up Iam curious myself. Thanks again everyone I learned alot by doing this and from everyones input.Miller 250DX HTP 221 DV AC/DCHenrob O-A Miller 180 MigMiller 150 Inverter   Hobart 10,000 Welder-Generator   Have a good day!!!
Reply:Originally Posted by powerThanks for all the replys!! I do not know why the company picked brass for a material? I was told they were using a steel tray and it would somehow short out a welder Iam thinking it must be a robotic unit? Idk but will see if I can get a pic and more info to clear things up Iam curious myself. Thanks again everyone I learned alot by doing this and from everyones input.
Reply:Originally Posted by MondoIf a steel tray causes a welder to short out so will any metallic tray.  Seems they need something molded from plastic or fabbed up from fiberglass.- Mondo
Reply:Great job bud, came out sweet!I hate being bi-polar it's awsomeMy Heroes Have Always Been Cowboys
Reply:Originally Posted by weldermikeGreat job bud, came out sweet!
Reply:Looks just as I remember, from 40 years ago.  I would imagine it has something to do with magnetic fields.   Mac
Reply:Brass was likely spec'd because it is a non-sparking material.  Brass/ bronze is regularly used for tools and parts in flammable environments, like a refinery or offshore. My guess.