Re: [MW:23468] WPS REVISION // Impact test temperature

In addition to what Alan stated here

Impact test requirements are not governed by ASME IX, you need to refer your code of construction, and not the referencing code

for e.g. if your code of construction is ASME BPV VIII div1, then  The test temperature for welds and heat affected zones shall not be higher than required for the base materials. of course there are several exemptions stated in the code (refer earlier post from Dr. Georgios Dilintas )

On 12 September 2015 at 22:25, Alan Denney <alan@denney1.freeserve.co.uk> wrote:

As a professional you are required to use engineering judgement as well and read the code to you advantage. I understand the question to be can you use a welding procedure qualified on one consumable at minus 30 deg C to qualify where you are required to meet an impact requirement in the specification at minus 45 deg C. Regardless of what the code says this can hardly be considered a correct thing to do. Are you aware of the transition behaviour of steel and have you seen a catastrophic brittle fracture? If this is a pressure system or a structure seeing low temperatures you need to take care to ensure the product will not fail in a brittle way.

 

Alan Denney

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Anup N K E
Sent: 11 September 2015 15:41
To: materials-welding@googlegroups.com
Subject: Re: [MW:23459] WPS REVISION // Impact test temperature

 

Yes  the same PQR can be used. Please go through  QW 404.12 part e of Section IX.

Regards,

Anup

On 11 Sep 2015 06:50, "Raghuram Bathula" <raghurambathula@gmail.com> wrote:

No, you need to follow your code of construction and support with new PQR qualified at or below MDMT

 

On 11 September 2015 at 09:12, Mahesh Mirje <mahesh.mirje41@gmail.com> wrote:

Hi expert's,
I have PQR with electrode E7018, AND IMPACT tested at -30deg. Lets say Observed energy values 20J
Can I make wps with E7018-1, FOR IMPACT REQUIRMENT at -45 deg.required energy values 20j,
AS per ASME weld metal produced by 7018-1,  will provide 20j at -45 deg.
And HAZ ENERGY VALUES CAN BE CONTROLLED BY RESTRICTING HEAT INPUT.
Pls, clarify can I prepare wps for 7018-1 at -45 by restricting heat input as same used in 7018 PQR.

Regards
Mahesh

--
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CADxVubnSezYoaZraAh%2BOfA%2BvgxqXkPu4ArZ3HnDvW%2Bwnfwe%3D5g%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.