Re: [MW:25775] reg: Maximum interpass temperature in a WPS

As far as non essential variable is concern and impact is not required interpass is ok but if client have some requirement mention in their specifications then that should be followed and as thk range 1.5 to 14.22 mm is concerned interpass can be 150 degree also.

Regards,
Mohit Aggarwal.

On Nov 29, 2016 8:04 AM, "Prince C thomas" <princecthomas@gmail.com> wrote:

Dear Sir's,

Kindly reply to  my below query:

We have project approved WPS with following details:

Material Spec: ASTM A106 Gr.B

P no:1/Group no:1

Material thickness: 1.5 -14.22 mm

Welding process: GTAW+SMAW

GTAW-Filler wire : ER 70S-2

SMAW-Electrode: E 7018

Preheat - 10 deg minimum

Interpass temp: 200 Deg C Maximum

In the PQR: pre heat temperature:38 deg C

                  Interpass temperature: 68 deg C maximum

Since interpass temperature is not a essential variable (Impact test is not applicable); but still our client is asking to recheck the max.interpass temperature value ( 200 Deg C) in the WPS. How to convince client to get approval on the same?

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