Preheat temperature is measured at a distance of min. 75mm from weld bead on parent metal and opposite direction of burner.
Prem Nautiyal
PREM S NAUTIYAL
CELL : 9769316004
From: Kristian Lund Jepsen <KUJ@ramboll.com>
Sent: Sun, 25 Mar 2018 15:58:23 GMT+0530
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Subject: Re: [MW:27567] AWS D1.1- Measuring Preheat and Interpass Temperature location
Hi,
Working with European and/or ISO standards, the locations are stated in ISO 13916.
For thickness (t) less than 50 mm, interpass and preheat should be measured at a distance of 4 x t from the grove, however max. 50 mm from it.
For thickness (t) of more than 50 mm, you may end up with a distance of 75 mm
Yours sincerely
Kristian Lund Jepsen
M. Sc. Mech. Eng.
Senior Chief Consultant
Piping, Mecanical and Layout
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Nallavan
Sent: 25. marts 2018 04:34
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:27564] AWS D1.1- Measuring Preheat and Interpass Temperature location
Dear Experts
Pls refer appl codes/standards and advise correct measuring location for Preheat and Inter-pass Temperature
| Question | |||||||
| How far groove joint, preheat and inter-pass temperature shall be measured? | |||||||
| My understanding:- | |||||||
| 1-Preheat Temperature shall be measured minimum 3"(75mm) from groove joint | |||||||
| 2-Interpass Temperature shall be measures maximum 10mm from groove joint | |||||||
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