From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Singh Rishi (TIPO - QA/QC)
Sent: Sunday, February 14, 2010 11:40 PM
To: materials-welding@googlegroups.com
Subject: RE: [MW:4314] AFFECT POLARITY IN HEAT INPUT
If one checks the heat input formula, there is no variable for the polarity.
Therefore , as per standard, Polarity doesn’t influence the H.I .
We all understand that actual H.I differs from calculated H.I as current / voltage/ travel speed are never a single value ( specially in manual welding )
Best Regards,
Rishi Raj Singh
From:
Sent: Saturday, February 13, 2010 9:59 AM
To:
Subject: Re: [MW:4297] AFFECT POLARITY IN HEAT INPUT
thank you
but my inyention is distribution of heat is differed by polarity , therefore H.I depend to polarity.is it true?
regards
On Sat, Feb 13, 2010 at 2:04 AM, <george.dilintas@gr.bureauveritas.com> wrote:
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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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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