Re: [MW:4300] AFFECT POLARITY IN HEAT INPUT

Agree with George. At DCEP the electrone will flow from tungsten to base metal and at DCEN will flow from base metal to tungsten. This electron flow will affect to the penetration.

Regards,
Endri

Sent from my BlackBerry®

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From: george.dilintas@gr.bureauveritas.com

Date: Fri, 12 Feb 2010 23:34:31 +0100

To: materials-welding<materials-welding@googlegroups.com>

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

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

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  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.