Then what is the difference between post heating and pre heat maintenance.--On Friday, June 27, 2014 at 12:02:24 PM UTC+5:30 george....@gr.bureauveritas.com wrote:Preheat maintenance, according to ASME IX, is not post heating
Preheat maintenance means that you do not cool down before perform PWHT
B31.1 requires preheat maintenance for Pno15E unless engineering provides differently
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(See attached file: Dilintas_George.vcf)Kannayeram Gnanapandithan ---27/06/2014 08:01:37---since max welding is taken place SMAW, it is better to go for POST Heat . temp 50degree above ur pre
From: Kannayeram Gnanapandithan <kgpan...@gmail.com>
To: materials-welding <material...@googlegroups.com>
Date: 27/06/2014 08:01
Subject: Re: [MW:21275] QW 406 , preheat maintenance
Sent by: material...@googlegroups.com
since max welding is taken place SMAW, it is better to go for POST Heat . temp 50degree above ur preheat temp and time for minimum 30minutes
THANKS & BEST REGARDS
KG.PANDITHAN, AWS-CWI, CSWIP 3.1
CONSULTANT-WELDING & QUALITY
On Thu, Jun 26, 2014 at 11:09 PM, Mahantesh Loni <mahan...@gmail.com> wrote:
Post heating. Not requiredOn 21-Jun-2014 9:18 AM, "rajesh s. mhaske ,Engineer Welding ,PUNE,INDIA" <rajesh....@gmail.com> wrote:
Dear sir
thickness and OD : 323 od* 70 mm thk
welding process : GTAW+SMAW
Material : SA106 Gr B
Preheating : 100 deg c
weld deposition : for GTAW : 4 mm, SMAW : 66 mm
Question :
1) Is the preheat maintenance (post heating ) is required for above material
2) If YES, what is time and temp plz send the back up
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