Hey Guys, this is my first of many posts hopefully.

Ive just started Tig'ing and ive not got a clue at the moment, ive been reading the posts on this board for a year or so on and off and finally bought a 2nd hand tig off a friend when he was moving unit. Its a cebora TIGSTAR150, its not got a pedel its on the button.

Ive been mig welding for a good few years now for a living and i fancy giving tig a go.

Ive only been welding for a few hours over the past week or so with the stuff i got with the welder, today i realised that the gas i had wit the set is argonshield not pure argon.

The tungstens are Red stripped and the gas cup measures 8mm accros the opening. (is that a number 8 then?)

The pipe is shd40 1.5 inch 316. Filler rod was 316, welded at 50amps gas at 20cfh.

A couple of questions, i cleaned the pipe with a new wire brush and petrol (all i had to hand, is that ok?) when i did a root run it was all shiney and had the colour going through it but as soon as i started to add filler rod it just went to a shitty gray colour with some scale on it, i took the heat upto about 80amps in 10amp jumps but it never made a difference, any ideas?

A couple of pics,sorry there not great.

 

a number 8 cup here would be 8/16" so 1/2" diamter wise.

IDK how it is in the UK though

 

Clean your filler wire off as well, and make sure you keep the end of it inside the gas coverage.