Too tired to follow this up, but there was work at Brunel University in the 1990's using an ultrasonic beam shining under/through the melt pool under tungten electrode (a TIG torch) and telling the torch traverse what to do - including backstep to melt out penetration defects.
Richard Smith
This seems to good to be true. Have a look at
True - but these guys were doing research - they could and did backstep, but I am sure they must have tried current control also.
Richard Smith
My technical dutch is a bit rusty, but this appears to be exclusive to orbital or robotic welding. Nothing my mother in law does.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required