- Thread starter Rick
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Dont you just hate a smart ****
, nice to beat simondrains to the award every once in a while
Drains
Yeah, nah.
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matt1978
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Drains
Yeah, nah.
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Back to normal then eh, Simon
Oh, God. I thought i'd calmed down. Obviously spending too much time looking at UKW
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I think it does have that effect
Iv been stoveing pipes from 3 years old, I could run a downhand root, with 2 fingers missing an arm shot off and blind in 2 eyes... MIGS are for girls, and whatch'a looking at outside now.....
How am I doing???....
matt1978
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I'm not laughing in a bad way though Snowy, I am not being disrespectful, I don't want any trouble!!!
Ah right, well looks like i'm on the right setting.
Well, I sorted a Y fitting and can now back purge my welds.
I also got a number 5 Ceramic and a thinner 1, it wasn't numbered for doing the tricky bits.
The last thing and the most important was some new 2.4mm red band tungstens, these sorted my problem with melting etc nearly straight away, infact i've probably done about 1 foot of welding and 10 start's without regrinding the tungsten 1's since installing the new tungsten, and it still looks perfect.
It seem's the other must have been rubbish quality or something slightly different, i don't know but all is well now
Many thanks lads.
Here's a couple of pic's because i don't seem to be getting it right.
Basically my weld seems to look black and dirty. Rather than the normal "burnt" look. What cause's this?
It was very clean, i tried more gas flow and that didn't help. Is it not enough heat? (current) Or 2 much heat?
And from the penetration.
What it's for
Basically my weld seems to look black and dirty. Rather than the normal "burnt" look. What cause's this?
It was very clean, i tried more gas flow and that didn't help. Is it not enough heat? (current) Or 2 much heat?
And from the penetration.
What it's for
matt1978
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The blackness is caused by oxidation, which in turn can be caused by too much heat, not enough gas coverage, dirty (oily) parent material........
Try turning your current down and when you dip the rod in the pool, try to get used to keeping the rod in the coverage of gas from the tig torch, people make the mistake of bringing the wire right out of the pool and a few cm away from the gas coverage, so the end of the tig wire oxidises and then you end up dipping the shi**y end back into the weld pool and so on.
It also looks like you dont have sufficient purge on the inside of the pipe, so thats oxidising too, even if your amps are right and your doing everything right on the outside, if it is 'cokeing' up on the inside its almost impossible to keep the outside clean.
Try turning your current down and when you dip the rod in the pool, try to get used to keeping the rod in the coverage of gas from the tig torch, people make the mistake of bringing the wire right out of the pool and a few cm away from the gas coverage, so the end of the tig wire oxidises and then you end up dipping the shi**y end back into the weld pool and so on.
It also looks like you dont have sufficient purge on the inside of the pipe, so thats oxidising too, even if your amps are right and your doing everything right on the outside, if it is 'cokeing' up on the inside its almost impossible to keep the outside clean.
Right, i'l need a new reg then, as i'm using 12lpm at the moment. I guess my reg isn't very accurate.
Randomly about 50% of the weld's came out nice, The 1 i took a picture of is the worse 1.
The black didn't rub off or anything like you'd expect, baised on MIG experience.
Randomly about 50% of the weld's came out nice, The 1 i took a picture of is the worse 1.
The black didn't rub off or anything like you'd expect, baised on MIG experience.
12 is for both though, the purge and the torch.
Do you mean 7-10 per side?
I purged with a pipe through a bit of sponge and taped the other end of the pipe up. Same with all the pipe's. I tried as little as 50 amp's but the problem didn't get any better.
The welds appear to be very strong. I.e. I couldn't break them when they were just tacked in place, but it just doesn't look as pretty as it could.
matt1978
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12lpm for both? Maybe that could have something to do with it, but I don't think it would make your welds that black, especially if the others turned out ok.
Are you sure that the purge, was airtight on the inlet side? Did you give it sufficient time to expel all the air before you started welding?
Are you sure that the purge, was airtight on the inlet side? Did you give it sufficient time to expel all the air before you started welding?
