Friday, February 12, 2010

[MW:4291] AFFECT POLARITY IN HEAT INPUT

Hi All
all know that heat input is independent from polarity.but  i see in GTAW that in DCEN ,70%HEAT generated in arc concentrated in parent metal & in DCEP 30% HEAT concentrated in base metal.
can anybody clarify it?
regards.

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[MW:34919] Welder qualification certificate

Dear All     anyone can share a format for welder certificate and card format        Thanks & Best Regards Saleem manhappulath Mob:+9665...