Some TIG welding machines have crater current settings. Is there any affect of these crater current on weld quality i.e. morphological features while using this machine in Autogenous mode?
Grzegorz Cios
Check figure 5A and 5B, even during remelting of one piece of metal it matters:
https://www.millerwelds.com/resources/article-library/ten-common-tig-problems-a-visual-guide
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Nimeshkumar Suthar
I don't know much about it. But, we have checked the effect of crater current at constant main current. The results shows, as we increase crater current, the arc will become intense and the sound will become harsh. Penetration will also increase. I don't know the reason behind it.
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