Saturday, February 13, 2010

Re: [MW:4294] AFFECT POLARITY IN HEAT INPUT

It is because of the difference of the electrons flow I think

  From: Ali Asghari [asghariali@rocketmail.com]
  Sent: 11/02/2010 23:44 PST
  To: materials-welding@googlegroups.com
  Subject: [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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