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Re: [MW:27578] AWS D1.1- Measuring Preheat and Interpass Temperature location

By Materials & Welding
Interpass temperature is measured on the weld bead.
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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