Mr. Hrishikeshan,
CO2 purging to flush oil and other gases needs to be done prior to welding. Following flushing area needs be inspected to ensure that oil and and other gases are properly removed.
As the weld is a socket weld , CO2 purging could be maintained but at very reduced pressure. CO2 "purge"should not interfere with "Argon" shielding gas used for GTAW and causes porosity.
If the weld is critical, then the advise is to do a mock up prior to welding.
Thanks.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Vino Varghese
Sent: Wednesday, February 27, 2013 10:34 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:16892] CO2 purging during TIG welding of CS service line
Dear Sir,
-- What does your WPS states?
Regards, Vino
On Thu, Feb 28, 2013 at 5:52 AM, K.M Hrishikesan <hrishikm07@gmail.com> wrote:
Our safety team recommends CO2 purging during repair welding of a 2" socket weld joint of a CS line( consumable- ER 70S-2 process GTAW). Traces of oil and toxic gases have already been removed from the loop by flushing and CO2 purging. Still, as a precautionary measure, CO2 puging is being recommended during welding alsoDoes it have any impact on the weld quality?Thanks--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
No comments:
Post a Comment