I have been struggling with TIG welding, sometimes it works, then I do another pass and its full of holes like a Swiss cheese
I have been practising on some hot rolled steel, removing a band of the oxide where I intend to weld, generally the first bead on one side of a T piece will be OK and then the other with holes. I was using scrap metal as given to me and many of the pieces were plasma cut, the rods I was given had rust on them in places which I tried to clean off with emery.
Anyhow once I run out of the 8 pieces of rod I went out looking for some, picked up off Ebay some A18 1.6mm 5Kg for just under £25 delivered. Bought some flap disks for the grinder and decided to give some 50 x 50 mm tube a good de-scale, used the new rods and a lot better time welding. Not perfect by any means but a step in the right direction.
Picked up a TIG torch holder, type with a big magnet in the base, should stop me picking the torch up off the floor!
Only when I get out of the garage and look at the welds after ,do I start wondering where I am going wrong, looking at these pics
I think either too hot or too slow moving as the weld metal is dropping down the gap and to much is on the inside.
Done with 80 Amps the tube is 2.2 mm thick.
Still looking for guidance or lessons in the Blackburn area.
Adrian
I have been practising on some hot rolled steel, removing a band of the oxide where I intend to weld, generally the first bead on one side of a T piece will be OK and then the other with holes. I was using scrap metal as given to me and many of the pieces were plasma cut, the rods I was given had rust on them in places which I tried to clean off with emery.
Anyhow once I run out of the 8 pieces of rod I went out looking for some, picked up off Ebay some A18 1.6mm 5Kg for just under £25 delivered. Bought some flap disks for the grinder and decided to give some 50 x 50 mm tube a good de-scale, used the new rods and a lot better time welding. Not perfect by any means but a step in the right direction.
Picked up a TIG torch holder, type with a big magnet in the base, should stop me picking the torch up off the floor!
Only when I get out of the garage and look at the welds after ,do I start wondering where I am going wrong, looking at these pics
I think either too hot or too slow moving as the weld metal is dropping down the gap and to much is on the inside.
Done with 80 Amps the tube is 2.2 mm thick.
Still looking for guidance or lessons in the Blackburn area.
Adrian