I have some conflicts. Normally we have to use higher grade material consumables to meet the tensile strength of higher gr material. If we use 70 series. Does it meet the required TS for 2 1/4 Cr?
From: Prabhu Kumar L <l.prabhukumar@saipem-india.com>
Subject: RE: [MW:5694] Welding Procedure
To: materials-welding@googlegroups.com
Date: Tuesday, 22 June, 2010, 10:09 AM
If code of construction as per ASME B31.3/ ASME Sec. VIII Div. 1, there is exemption for PWHT upto 13mm for material 2 ¼ Cr-1Mo materials. However, for materials 9Cr-1Mo, no exemption for PWHT.
For welding of A106 to 2 ¼ Cr-1Mo (without PWHT), as you mentioned you can use ER70S-2/3 and E7018 with following precautions since hardness may not meet the requirements without PWHT.
- Follow temper bead weld technique (carryout buttering of 3-5mm on 2 ¼ Cr-1Mo side and welding between buttered layer to A106) as suggested in QW-462.12 of ASME Sec. IX.
- Increased preheat of around 200-250 Deg. C
- Post heating of at 300 Deg. C for ½ hour
For welding of A106 to 9Cr-1Mo, PWHT is mandatory for 9Cr-1Mo materials for all thicknesses. You can use ER70S-2/ E7018 or ER80S-B8L/E8018-B8L, however after welding PWHT shall be carried out.
Alternative you can avoid PWHT on 9Cr-1Mo side provided buttering with E7018 and PWHT shall be completed. Final welding between A106 to 9Cr-1Mo with ER70-S2/ E7018 with temper bead technique.
Regards,
Sr. Principal Engineer,
Equipments & Materials Dept.,
Saipem India Projects Limited,
Nungambakkam High Road, Chennai - 600 034, India .
Tel:+91 44 43906588, Ext.: 588, Fax:+91 44 66840345,
Mobile Ph. No.: +91 9003010978.
From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Bhatti BM (Bashir) at Aera
Sent: Monday, June 21, 2010 10:45 PM
To: materials-welding@googlegroups.com
Subject: RE: [MW:5692] Welding Procedure
Sorry did mention that , its ASME V Section I, Steam Generator Tubes Turn, I'm aware of test requirements Like mention below.
Its welding P4& P5 and 410 Material to A-106, as per ASME, 2 ¼ cr PWHT is Optional but for 9 Cr is mandatory , What about welding 106 with 2 ¼ or 9 Cr with TIG root and E7018 cover pass and only carryout preheating to 300 F and eliminate PWHT.
Thanks,
From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Harish Kannepalli
Sent: Saturday, June 19, 2010 5:41 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:5658] Welding Procedure
Dear Bhatti,
What is code for Procedure? What is the job? Normally you require tensile,bend,charpy impact(conditional) and macroexamination.
Folks,
We doing Mockup procedure before actual welding, what type tests are required to qualify the welding procedure
I was looking for welding procedures for and filler metals
CS A-106-B and 2 ¼ Cr ,
CS A-106-B and 410
CS A-106-B and 13 Cr
CS A-106-B and 9CR
Thanks , Bashbhat
--
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.
--
K Harish Kumar
--
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.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
DISCLAIMER: The information contained in this communication is intended solely for the use of the individual or
entity to whom it is addressed and others authorized to receive it. It may contain confidential or legally privileged
information. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution
or taking any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If
you have received this communication in error, please notify us immediately by responding to this email and then
delete it from your system. Saipem India Projects Limited (SIPL) is neither liable for the proper and complete
transmission of the information contained in this communication nor for any delay in its receipt.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
--
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.
--
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:
Post a Comment