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Moderator
I had to weld a brass acorn nut to a brass tubing fitting today. This is a part for a new waste oil burner for my foundry. This was done with no filler. I know it isn't too pretty (well actually ugly) but it is welded and won't be coming off. I am still trying to master the TIG.
Dan
Units owned
Longevity WeldPro LS200PI (IGBT)
Force Cut LP80 plasma cutter
Longevity auto dark welding helmet
Atlas 10x36" lathe
Craftsman 5HP 30 Gal compressor
Home made CNC router/plasma/hot wire foam cutting table powered by Longevity Force Cut LP80
Home built aluminum foundry, HF 4x6 bandsaw, O/A torch
Senior Member
that looks alright!
actually, I tried to weld a brass air fitting and it was nasty, soon as I started the arc it got blackened and smokey.
brass is an alloy of copper and zinc, so the zinc causes trouble when welding.
copper has a melting tempurature higher than the boiling temp. of zinc, and some people consider TIG welding brass impossible because the zinc boils and burns by the time the copper starts melting.
I hear that starting with lots of heat and very good fume management make welding brass feasible.
personally, after two tries, I soldered a fitting with regular plumbing flux and lead-free solder. the parts were a little thin to try welding again, and far more toxic smoke than I can tolerate!
good work.
Last edited by henrym; 06-12-2009 at 06:34 PM.
LONGEVITY M200 IGBT MIG Welder
CT-520D
Chiry Welder (previously owned)
1/25,000 sec. adjustable Auto-darkening filter cartridge (from Hong-Kong)
C.H. compressor + extra tank
Ryobi 6" bench grinder
Black & Decker this & that, Chinese drill & angle grinder, lots of odd tools,
a big old vice I got for free,
John Deere CS40 chainsaw and several Axes... they can be very useful!
Senior Member
Dan:
I'm with you. If it works, it's good!
Art r.
Cheers,
Art R.
Longevity LS200-PI multi-purpose cutter/welder,
Miller 180 Auto-Set MIG,
Custom 5hp compressor,
Moderator
Henrym,
I used the foot pedal and did use a lot of heat at the start. As soon as it started fusing I backed off. I also did it in four passes letting it cool between passes.
Dan
Units owned
Longevity WeldPro LS200PI (IGBT)
Force Cut LP80 plasma cutter
Longevity auto dark welding helmet
Atlas 10x36" lathe
Craftsman 5HP 30 Gal compressor
Home made CNC router/plasma/hot wire foam cutting table powered by Longevity Force Cut LP80
Home built aluminum foundry, HF 4x6 bandsaw, O/A torch
Moderator
I have not tryed brass yet, but plan to do so. Looks good Dan.
keith
The older the Boys, the more expensive the TOYS
Previously Owned equipment;
lot's
Current equipment;
3HP Speedair air compressor, Wilton drill press, Craftsman 10x36 lathe, 10 ton hydrolic press, Portaband band saw, OA torch, Small home brew CNC machine, powered by my 200PI
2 Longevity autodarking helmets
160d MIG
WeldAll 200PI
Senior Member
When you have to do brass to brass, I have always used silver solder which is clean, quick, makes great joints and is an extremely solid joint. Silver solder is much harder than regular solder and holds a much higher pressure.
jbman45
Longevity 200PI
Longevity Pro Blue Helmet
Century AC/DC 225Amp Stick/Tig
Victor 2 Stage Oxy/Acetylene w/cut
5HP 2 Stage Compressor
Porter Cable Band Saws
DeWalt Hand Stuff
Shop with +40 years of Gadgets....
Moderator
jbman,
I considered silver solder but since this going to be a burner nozzle I wanted something with a higher melt point.
Dan
Units owned
Longevity WeldPro LS200PI (IGBT)
Force Cut LP80 plasma cutter
Longevity auto dark welding helmet
Atlas 10x36" lathe
Craftsman 5HP 30 Gal compressor
Home made CNC router/plasma/hot wire foam cutting table powered by Longevity Force Cut LP80
Home built aluminum foundry, HF 4x6 bandsaw, O/A torch
Junior Member
Looks darn good to me. It's better than anything I could do. (Which isn't saying much)
What are you planning on melting in your foundry?
Moderator
Mostly aluminum, possibly some brass. I just posted a few pics of the completed burner and furnace in the off topic forum.
Dan
Units owned
Longevity WeldPro LS200PI (IGBT)
Force Cut LP80 plasma cutter
Longevity auto dark welding helmet
Atlas 10x36" lathe
Craftsman 5HP 30 Gal compressor
Home made CNC router/plasma/hot wire foam cutting table powered by Longevity Force Cut LP80
Home built aluminum foundry, HF 4x6 bandsaw, O/A torch
Member
Looks good. Keep up the good work.
Metal is for men and wood is for wussies!!!!
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