Monday, March 19, 2012

Re: [MW:13936] Clarification on Step Cooling Test

please , i want to know ... 34crmo4 , 30crmo4 for cng cylinder. thanks

On 3/18/12, Prakash Hegde <pb.hegde@yahoo.com> wrote:
> Reforwarding
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> Dear Siva
> Attaching the How the PQR of CrMoV and CrMo material is qualified with tests
> and PWHT require to be qualified. Which may help you
> Test require for 2.25Cr 1Mo and CrMoV are same only PWHT temp is different
> i.e. For CrMo generaly it is 690 C and For CrMo V it is kept 700-705
> Also refer ASME Sec VIII Div I mandatory eppendix 31
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> Regards
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> Hegde P.B.
> +91 8805593046
>
> --- On Sun, 18/3/12, Siva Kumar <mailmrsiva@yahoo.com> wrote:
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> From: Siva Kumar <mailmrsiva@yahoo.com>
> Subject: [MW:13916] Clarification on Step Cooling Test
> To: "materials-welding@googlegroups.com"
> <materials-welding@googlegroups.com>
> Date: Sunday, 18 March, 2012, 9:30 AM
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> Dear Experts,
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> We need to make a manifold for heater of size 60" and 40" diameter of P22
> material. It has been decided to use A387 plate for making the manifold.
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> 1. Can anyone give details of What is Step Cooling test connected with this
> material and what are the requirements of the step cooling test relating to
> qualification of WPS/PQR.
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> 2.Can we use ER90B3 and E9018B3. Also the Joint configuraiton is Double V
> groove with backgouging as per client requirements.
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> 3.How much length of plate to be used for preparing the PQR to perform the
> step cooling test.
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> 4. Further, we have a extruded branch connection of size 4", 5" and 6" of
> material A 335 Gr.P9, thickness around 7.11. What electrode can we use for
> this purpose? Do we need to perform the same Step cooling test for this
> WPS/PQR?
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> Kindly suggest.
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> Thanks and regards,
> Siva
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> w.r.t. applicable code/standard/contract documents.
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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