Wednesday, November 12, 2008

[MW:1303] Re: max. Heat Input on WPS?

Also you will get more information from BS standards related to welding such as BS 288 ,BS 5135 etc gives more information on preheat and heat input requirements and even D1.1 Appendix M ?

 
Best Regards,

Francis lobo
 Original Message -----

From: Ali Asghari

To: materials-welding@googlegroups.com

Sent: Wed, 12 Nov 2008 15:42:31 +0530 (IST)

Subject: [MW:1298] Re: max. Heat Input on WPS?



hi


for c.s ,if the fabrication process is TMCP,the h.i must be less than 25kj/mm.









From: PREM SHANKARDUTT NAUTIYAL <prem_nautiyal@rediffmail.com>
To: materials-welding@googlegroups.com
Sent: Tuesday, November 11, 2008 5:55:17 PM
Subject: [MW:1294] max. Heat Input on WPS?



  Dear friends

How do we specify heat input requirements for a particular process / material as per ASME Sec IX.
Now i have seen many clients specifying max. heat input as 2KJ/mm for Carbon steel welding. Some clients like BHAVINI / NPCIL specify max. heat input as 1200 J/mm for stainless TIG welding.
DO we have to put this heat input requirement on the WPS as per ASME Sec.IX if the construction code calls for impact testing ?? If there is impact testing involved then heat input becomes an supplementary essential variable, then how do we specify the max.heat input on the preliminary WPS before conducting the PQR ??
Are there any guidelines / thumbrule / literature available ?
How to calculate the optimum heat input requirement for various materials like Carbon steel , LAS, Stainless steel ( i am not talking about basic formula HI=V*I*60/Travel speed)

Please share ur valuable advice / experience

.

Regards

Prem Nautiyal
Godrej, Mumbai

PREM S NAUTIYAL
CELL : 9820313278
















      



--
Hyundai to launch the i20 in India. Catch the exclusive preview on ZigWheels.com
--~--~---------~--~----~------------~-------~--~----~
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.
-~----------~----~----~----~------~----~------~--~---

By -

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

[MW:35346] Cast-iron welding

Any advice for cast iron welding Sent from Yahoo Mail for iPhone

  • Materails FAQs
    Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? ...
  • RE: [MW:5585] Buttering of weld joints
    Definition of buttering from ASME Section IX, QW/QB-492 Definitions:   Buttering:  the addition of material, by welding, on one or bot...
  • WELD AND WELDING SYMBOLS
    Section I. PRINT READING 3-1. GENERAL a. Drawings . Drawing or sketching is a universal language used to convey all necessary information to...
Rediff Shopping

Pages

Contributors

Blog Archive