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[MW:12912] RE: 12899] Furnace temperature for PWHT

By Materials & Welding

Hi,

Only temp recording is only the mistake in your case, ie as 385 Deg C, but you had placed the material at 300 Deg as per code provision – so there is no issue of the mechanical properties change in the material;

Further mechanical properties will not affect with change in temperature while placing the material in the furnace.

 

Thanks and Regards................?

 

Lakshman Kumar.B|Manager |Lanco Infratech Limited

Plot No 1255 | Sanjeevani chowk | Mahanadi vihar | Cuttack 753004

Phone : + 91 671 2445033 | Mobile : +91 9937286851 |www.lancogroup.com

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of manpreet
Sent: Wednesday, November 09, 2011 4:09 PM
To: materials-welding
Subject: [MW:12899] Furnace temperature for PWHT

 

Hi,

 

PWHT procedure for a unit (Pig Traps) made of API 5L Gr 65 material specify temp of furnace 300 Deg C when unit is placed on it, unfortunately Furnace temp was recorded at 385 Deg C....

 

As i know max. recommended temp of furnace while placing unit should be 315 Deg C, please share your view whether exceeded temp would effect mechanical properties in some way...

 

Regards

Manpreet Singh


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