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Author: Subject: MIG welding stainless - !!NOW WITH AWESOME MS PAINT DIAGRAM!!
Benzine

posted on 4/7/08 at 12:55 PM Reply With Quote
MIG welding stainless - !!NOW WITH AWESOME MS PAINT DIAGRAM!!

Is a 75% argon / 25% CO2 mix okay for welding stainless or should I get a bottle of pure argon?

I'm trying to weld some 1.5mm thick stainless at the moment and I just can't get the hang of it, any tips? Wire feed/power etc?

Cheers

[Edited on 4/7/08 by Benzine]

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tegwin

posted on 4/7/08 at 01:42 PM Reply With Quote
I found I had to whack up the power really high, increase the feed rate to prevent the wire welding to the tip...Even then the weld quality was poor!...

U should really use pure argon, but a mix ith some co2 would make the welding a lot easier....

Its not easy or pretty....Dont think I will try it again with a hobby welder!





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Benzine

posted on 4/7/08 at 01:46 PM Reply With Quote
I've just lowered the feed rate and power and I'm getting better results but still not great. With a higher power it was distorting/blowing holes.
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Benzine

posted on 4/7/08 at 02:14 PM Reply With Quote
Here's a diagram of what I've been welding. Figure A is when two sheets meet, this I can weld really well, v happy with it. But when I'm welding in a 90 degree angle it all goes down the pan What am I doing wrong?



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Ivan

posted on 4/7/08 at 02:23 PM Reply With Quote
I seem to recall reading something about swapping the +ve and -ve leads for stainless welding - or was it for some other metal?






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02GF74

posted on 4/7/08 at 02:35 PM Reply With Quote
quote:
Originally posted by Ivan
I seem to recall reading something about swapping the +ve and -ve leads for stainless welding - or was it for some other metal?


alumiumium I think.

here are some tips I wrote especially for ya






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UncleFista

posted on 4/7/08 at 02:46 PM Reply With Quote
quote:
Originally posted by Ivan
I seem to recall reading something about swapping the +ve and -ve leads for stainless welding - or was it for some other metal?


I don't think so, but I do know you have to swap +ve and -ve when you switch between gas and gasless wire.





Tony Bond / UncleFista

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Which suddenly flips, pinning you underneath.
At night the ice-weasels come...

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Benzine

posted on 4/7/08 at 03:22 PM Reply With Quote
quote:
Originally posted by 02GF74


here are some tips I wrote especially for ya


^__^ thanks for the link, picked up some great tips. I'm really getting the hang of it now and I'm getting some excellent welds! I think I was just rushing it to much and I wasn't really concentrating on the bead. Also I've set up the work piece in a much better position to work on.

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Volvorsport

posted on 4/7/08 at 04:36 PM Reply With Quote
nozzle needs to be poking out of the shield , to prevent spatter , you need to work quickly with high settings . youre not looking for penetration !





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cjtheman

posted on 4/7/08 at 04:44 PM Reply With Quote
i would use astec 5 gas we use it in work
it gives an awesome finish
a little bit more expensive but well worth it
cheers
colin

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kango

posted on 13/7/08 at 06:06 AM Reply With Quote
With regard to the gas used.

Is there a gas that you can use for mig and tig.

It looks like one gets a better result using tig on SS. Also nice once migged to go over it with the tig to neaten it up, but don't have space for another bottle of gas?

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