Post weld heat treatment

By vudinhcong Date 10-13-2016 13:21 Edited 10-14-2016 06:56

hi Gents,
pls help me,
Do paragraphs 6.4.4(b) and (e) permit heating and cooling rates less than 55°C/h (100°F/hr) when applying postweld heat treatment? ASME V III DIV 2 - 2015,

By Patel006 Date 10-24-2016 13:00

Hi gents,

Why we can't perform pwht for <19 mm (pipe) / <38 mm (plate)?

Your reply is highly appreciated.

Thank you

By eduardo sales Date 01-26-2017 12:30

According to item UHT 82 (C), if the welds are not subjected to tempering and tempering heat treatment, the weld metal and the ZTA shall meet the impact test requirements in accordance with UG-84.ok

Now if the impact test requirements as described in UHT 6 are met for the base metal, it is not necessary to perform the impact test on the weld metal and on the welding procedure ?.
Is this correct for me?

ASME VIII DVI.1 ED.2010

By princek95 Date 05-09-2017 16:53

Hey gents...,

I want know about post weld heat treatment.
Is this necessary in welding. If yes so where will we use.

By welderbrent (*****)

Date 05-09-2017 18:38

Depends upon what you are trying to accomplish, what your welding procedures state, what material you are working with, and what your Contract Documents say.

PS, don't worry about it this time, but try to start your own thread when you have a question.

By christopherj Date 05-12-2017 06:15 Edited 05-16-2017 09:31

Plate thickness is 38mm (Material Grade is IS 2062 E250 Gr BR,Pno: 1 and Grno:1).
Customer told us to refer ASME SEC VIII Div1 for the PWHT . what would be hold time for the 38mm thickness plate???

I have refereed UCS-56. it tells that 1hr/inch=25mm, 15mins min.

38mm-25mm=13mm
13/25=0.52x15=7.8min+60min=67.8min=1.13 hours

Holding hour is 1.13 hours.

Is it right sir.

Please Confirm and reply soon

By christopherj Date 05-12-2017 06:38 Edited 05-16-2017 09:30

Plate thickness is 20mm (Material Grade is IS 2062 E250 Gr BR,Pno: 1 and Grno:1).
Customer told us to refer ASME SEC VIII Div1 for the PWHT . what would be hold time for the 20mm thickness plate???

I have refereed UCS-56. it tells that 1hr/inch=25mm, 15mins min.

25mm-20mm=5mm
5/25=0.2x15=3min+60min=63min=1.05 hours

Holding hour is 1.05 hours.

Is it right sir.

Please Confirm and reply soon

By lombok123 Date 05-16-2017 03:24

Interpass temperature for different P no. material as per ASME

Hi All,

I have been searching requirements of Interpass temperature for material with P No. 5A, i want to know what is the max. interpass temperature, what i could find in asme section 1 is PHWT and preheat....

and how about max. interpass temperature for other materials (other P No.), what i could find in the ASME is only P. No. 10,,, appreciate your reply.

By 803056

Date 05-16-2017 13:50

Do not double post.

Al

By welderbrent (*****)

Date 05-16-2017 14:56

Especially in someone else's thread.

By Dana A. Jerjis Date 12-30-2017 20:07

Hello everyone
Please I need your advices of PWHT procedure for ASTM A335 P5 pipe 3” diameter 160 sch
Bye wall thickness 11.53 mm
Heating temperature amount/ time amount=?
Holding time in amount temperature=?
Cooling temperature amount / time amount=?
And thank you for your efforts