Mig welding

[Ant]

Aussie Mike,

Thanks that information is helpful, that coupled with the welder setup, and a bit of practise.....! Getting that pool working right from experience is important.

[Ant]

Aussie Mike,

I had a go using your diagram pattern, on a test piece, and got very good penetration, in fact you could just see a mild melt on the other side,

As I am going vertical, but also will go vertical/across, does the same technigue apply, and I guess you need same sort of weave for flat welding?

[Aussie Mike]

You only need the christmas tree technique when going verticle up to provide a shelf to hold the weld pool up. When you go accross just go straight into it, I don't generally weave. Just watch the weld pool and control your speed to make sure it grabs both sides of the join and also gets right into the root of the fillet. On larger fillet welds it's often better to put a root run in and two capping runs on top. That way you get good root penitration which is where the real strength is. That's for heavy materials ie 10mm thick etc.

Cheers

edited for crappy spelling

[Jac Mac]

While we are on Migs, have any of you had experience with the Lincoln or other brands Migs AC/DC with pulse on pulse along with Tig, plasma,stick etc all in the one machine. With a mig weld that has the appearance of a tig weld bead ( alloy ) it would seem like the answer to our prayers. I am at the point where I either have to buy a new Tig or possibly one of these. The idea of tossing all the other individual machines out in favour of one appeals from a space point of view, but heaven help anything breakable if that one shiny machine was to fail & leave me high and dry without a backup.

Jac Mac