Oxy-Acety Welding Aluminum

I've seen this process and in the 20+ years of welding I've only seen it done on a motorcycle show welding Gas tanks. What do you know about this art of welding? I've mastered the tig,mig and arc processes and would like to learn this proceedure. I've even welded pop cans together and steel to aluminum. Can you Help?

 

i have used oxy-hydrogen to gas weld aluminum. It is not as pretty as tig but it does work. Oxy Acet. is a little to hot. Get some flux and filler rod and have fun, but don't sell your tig.

 

[sonamor]

I have welded using this method just once in my training. you will need the right flux and filler rod. I found that I created more holes than I should have. This was on 1.6mm sheet.
Aluminium brazing, now that was difficult.

 

[0theblacksmith0]

Hi there Weld Dr.
Oxy-acetylene welding of aluminum can be very rewarding once you start to get the hang of it,but you need high quality consumables.I can give you a few good tips-I used
have to demonstrate how it was done.I used the same filler rod for o/a and tig,so get a good flux.Always endeavour to have a carburising flame.We all know that "Ali" tends to collapse quicker than your usual steel/alloy so drop the angle of your torch right down so most of your heat deflects
away from the plate/job if the pool starts to get a bit big.With fillet welds on 1.6mm plate I found that a little preheat around the start point of your weld,and constant heat on the filler rod (front of weldpool) rather than the joint istself achieved an attractive,smooth run.Sold too!Make sure your not trying to weld Magnesium Alloy as this needs yet again a special filler & flux.Try contacting specialist suppliers of repair and maintainance welding alloys.Hope this helps in anyway-Cheers,Tref - North Wales UK

 

[rinso]

Goodday Weld Dr.
Oxy-Acet welding of aluminium is a lot of fun, as is all oxy welding. I have welded from thin body metal (Land Rover),to motor cycle engine castings to the Magnesium Alloy of VW engine crankcases. It is a must to use top quality flux and the correct filler. I find it usually is helpfull to preheat and when starting to weld, keep dipping into the weld area with the filler rod to ascertain when correct temperature has been reached. This is necessary because surface "skins", making it difficult to see when pool temperature is right. If you miss this temp. it is very easy to get your job too hot and have the whole piece collapse. No Fun. High magnesium contents can cause the piece to catch fire. If this occurs, don't panic, just throw flux onto the flame to extinguish it.
Lots of luck
Rinso NSW Australia