jonah
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| posted on 8/12/07 at 07:58 PM |
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Tig Welding
Hi All,
Just bought a tig and need to know a few basics if possible.
What's the reason to let gas start before weld and end longer after a weld?
Do you bush the torch towards welding area or face area already welded?
Do you treat the torch like gas on butt welds and overlap? eg. directon of heat?
Please if I can have all your tips and advise that you were offered when starting too please that would be great.
Thanks
Jonah
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Gav
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| posted on 8/12/07 at 08:02 PM |
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hi,
Have a look at the PDF's here their is a VERY good tig movie that you can download via torrents, im
sure someone will tell you what to search for shortly but i think it was callled Tig Welding Basics.avi about 500meg or so.
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madteg
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| posted on 8/12/07 at 08:46 PM |
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GAS
Pre gas is to get a shield of gas before arc to stop perosity and post gas is to let the pool of molten metal to cool so that gas shield is still
present, also slop in and out, slop in ,is increase in power to the set amps and slop out is decrease from set amps to cut out point.Slop out is to
stop small holes appearing when finishing a run. hope this helps.
[Edited on 8/12/07 by madteg]
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short track 123
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| posted on 8/12/07 at 11:42 PM |
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Pre gas also helps the arc to start.
And Practice Practice Practice.
I used to practice for 3 hours a day but be aware you will go though gas like no tomorrow.
Pic of tig welded wishbone
Jason
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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