Re: [MW:18252] I need a clarification, is FCAW process comes under gas metal arc welding process?

Sec. IX (2010) have only "listed" the essential variables of GMAW and
FCAW together.
Essential variables for Procedure Qualifications (both FCAW and GMAW)
are listed together under QW-255, while those for performance
qualifications are listed under QW-355.

But the point is even according to new ASME, If you change the process
from GMAW to FCAW, it means that you have changed the filer metal
product form (QW-404.23) and changed the shielding (QW-408.2) and
sometimes transfer mode changes (QW-409.2) to globular that all of
them are essential variables and need a new PQR.

This categorization will not do any good for anyone, neither for the
engineer nor the inspector (except for the publisher who will have
less pages to print). So Why bother...?
It doesn't change anything in the real world. If you go for FCAW then
you have to go through the qualification process all over again.

Unless one wants to win the "I know SAME Sec. IX word by word" contest
that is certainly not our case...!!!

For the sake of listing the welding variables, you can accept this
reasoning to categorize FCAW as a gas metal arc welding but it doesn't
mean that those are same process.

These are two different processes with different settings and
features. Their applications are quite different in many cases. Not
only Flux does provide shielding but it also refines the molten metal
and in some cases has an alloying function. The slag gives FCAW many
features and the list goes on...


Personally, with all respect that I have for ASME, I think it is
making confusion between users. Many people argue about this issue I
believe ASME should get back to the old system.

Regards
Ramin Kondori
IWE AT0070

------------------------------------------------------------------------------------------------
On 7/22/13, prem nautiyal <prem_nautiyal26@yahoo.com> wrote:
> YES.
>
> QW-492 gives the definition:
>
> welding, flux-cored arc (FCAW): agas metal-arc welding
> process that uses an arc between a continuous filler metal
> electrode and the weld pool. The process is used with
> shielding gas from a flux contained within the tubular
> electrode, with or without additional shielding from an
> externally supplied gas, and without the application of pressure.
>
> Regards
>
> Prem Nautiyal
> 9769316004
>
>
>
> ________________________________
> From: Tarek Yehia <t.yehia2009@gmail.com>
> To: materials-welding@googlegroups.com
> Sent: Monday, July 22, 2013 10:09 AM
> Subject: Re: [MW:18236] I need a clarification, is FCAW process comes under
> gas metal arc welding process?
>
>
>
> Dear Raghuram Bathula,
>
> what is in QW-492?!!
>
>
>
> On Mon, Jul 22, 2013 at 7:23 AM, Ravikumar, Thattekere Siddappa
> <travikumar@flowserve.com> wrote:
>
> Yes it is under gas metal arc welding , which will with flux wel be coated
> for continuous shielding , weld parameters are slightly variable to GMAW
> and the gas consumption will be less compared to GMAW
>>Regards
>>TSRK
>>
>>From:materials-welding@googlegroups.com
>> [mailto:materials-welding@googlegroups.com] On Behalf Of Raghuram Bathula
>>Sent: 22 July 2013 09:49
>>To: materials-welding@googlegroups.com
>>Subject: Re: [MW:18232] I need a clarification, is FCAW process comes under
>> gas metal arc welding process?
>>
>>Yes, refer QW 492
>>On 21 July 2013 21:12, PK M <pkmqaqc@gmail.com> wrote:
>>Dear Experts,
>>I need a clarification, is FCAW process comes under gas metal arc welding
>> process?
>>
>>Thank you.
>>
>>Pkm..
>>
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>
>
> --
>
> Best regards,
>
> Tarek Yehia
>
>
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