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Discussion Starter · #1 ·
So having trouble using my welder, it was fine last time it was used 5 years ago!! Keeps burning down the electrode and getting deposits on it, tried more gas/less gas and altering power but still the same. Any ideas?
 

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Welding Guru
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Search for gas leaks and make sure all the rubbers around the torch are not split.
Also make sure the collet and collet holder are in good condition , if they are disorted in any way ( including elongated holes) it can cause disruption issues ( it speeds gas flow up into a nozzle jet and this can draw in air due to formation of a low pressure zone near the ceramic nozzle periphery.
I have had all the above conditions over the years and also had the ac/dc switch on older machines break down and track across terminals which lead to interference on the dc side and would burn tungsten points away. ( local specialists replaced the switch and that solved the issue)
Let us know how you get on.
 

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Legs and heels subscriber
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What kind of equipment ? Can you reverse the earth and the torch polarity ?
sounds like you were on AC setting but then you mentioned DC welding steel
 

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Discussion Starter · #6 ·
Its a dc only set, cheap snap on 20+ years old but worked okay . Welded my lads drag bikes fine, need to order some new electrodes so what sort . Also will be making up a stainless exhaust.
 

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I use thoriated (red tip) as they retain the tip the best, you can get ceriated and lanthanated (purple and grey respectively) but they tend to lose the tip after a while and suffer more if contaminated. ( but dont contain the radioactive thorium )
 

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I'm a grown up drunk!
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I use thoriated (red tip) as they retain the tip the best, you can get ceriated and lanthanated (purple and grey respectively) but they tend to lose the tip after a while and suffer more if contaminated. ( but dont contain the radioactive thorium )
I’ve tried and dont rate the grey ones at all,
Agreed the reds are good but i’ve used the Blue 2%? Lathanated ones for quite a while now that i find work well on both ac and dc and hold their point well.
 

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Cheers, will give them a go.
Once had some very high quality (almost pure tungsten ) in the late 80s we used on Nuclear work and they where brilliant and would not contaminate and kept sharp points up to 450 amps ( 3.2mm dia) much heavier than standard tungstens.
Tried to find them since but no joy.
Used to use 6mm zironiated on a bakelite water cooled torch when welding big ally castings serving my time in the early 80s, the high frequency would blitz the radio every time. Used a 15 EW lense in my screen which saved my eyes!!!
 

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its a bit late now , but you have your earth lead in the wrong hole !!!
 

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Discussion Starter · #12 ·
Its fixed so yes it is correct, anyway new tungsten's sorted it along with a big gas bottle.
 
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