Monday, May 18, 2009

[MW:2209] Re: 2198] Full Penetration Weld Test On Assemble Valve

As manufacturer already says it will increase tension and material structure, pwht is advisable. But if its a test and the customer pays, execute and report.

regards,

AJ


Date: Mon, 18 May 2009 14:13:15 +0800
Subject: [MW:2199] Re: 2198] Full Penetration Weld Test On Assemble Valve
From: arlie327@gmail.com
To: materials-welding@googlegroups.com

Customer require Full Penetration Weld on Valve. However, manufacturer response as below..
 
To carry out the FPW on the valve with ASTM A351CF8C is not advisable. This is because during the process the material will expose to the temperature around 900 deg C.
When the material (ASTM A351CF8C)  expose to the temperature above  700 deg C it will transform or out of shape especially on the  parts like valve disc or valve stem,seat, etc.
This valve also required PWHT and the PWHT is carry out prior to assembling and because of welding bonnet , disassembling , machining and polishing cannot be done.
Therefore we wish to inform you again that it is NOT ADVISABLE to do the FPW.
 
But customer still insist on the test. Please advise.
 

Rgds,
alee

 
On Mon, May 18, 2009 at 2:04 PM, Yeleswarapu, Ravi <Ravi.K.Yeleswarapu@c-a-m.com> wrote:
Mr. Lee – Could you post your question more in detail, as I understand the question – RT can be carried out on weld joint of assembled valve to test the weld full penetration.
 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of a lee
Sent: Monday, May 18, 2009 9:57 AM
To: materials-welding@googlegroups.com
Subject: [MW:2198] Full Penetration Weld Test On Assemble Valve

 

Can Full Penetration Weld test on assembled valve ( ASTM A351CF8C ) ?

 

Please advise.

 

Rgds,

alee


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information of Cameron and its Operating Divisions. Any unauthorized use or disclosure is prohibited. If you are not the intended recipient, please contact the sender by reply email and delete and destroy all copies of the original message inclusive of any attachments.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~





Heb jij de nieuwe Messenger nog niet?! Download 'm hier
--~--~---------~--~----~------------~-------~--~----~
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/
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.
-~----------~----~----~----~------~----~------~--~---

No comments:

Re: [MW:34832] Inquiry about Single Bevel with Back Grinding

Dear Uday, As per your question that one is called with backing only,Simple both side you are welding it is backing with strip or without st...