RE: [MW:23115] Normal duplex and super duplex

Hello Pravin,

 

What's the  grade of DSS involved.What's the consumable used and what's the ferrite readings in consumable MTR? What's the thickness involved?

 

Meeting ferrite is only one part of DSS procedure qualification.

 

All those information would be worth looking at.

 

Thanks.

 

 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Engineer/Specialist

Ontario, Canada

pgoswami@quickclic.net

pradip.goswami@gmail.com

 

---

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Pravin G
Sent: Wednesday, April 15, 2015 10:04 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:23105] Normal duplex and super duplex

Dear Sir,

We used ferrite meter equipment.

Pravin Poornachandran

Sent from my iPhone

On 15 Apr 2015, at 15:15, meisam shokri arfaei <meisamshokri@gmail.com> wrote:

Which test did you implement for measuring the ferrite content?

Ferrite meter equipment or metallography?

On Wed, Apr 15, 2015 at 5:39 AM, Pravin G <htcispravin@gmail.com> wrote:

Dear expert,

I'm having to weld normal duplex plate for vessel, SMAW process with following requirements:

I.v -40degC
FN: 35-65
CPT 22deg C @24 hrs
Corrosion 4g/mm

I'm unable to achieve FN even after several test.

Can anyone guide me how to achieve FN ?

Pravin
Singapore

Sent from my iPhone

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M. Shokri Arfaei

ISA-ISTS - Metallurgy Lab. Manager

ASNT NDT Level III

International Welding Engineer

Tel.: +98 21 66282127

Fax: +98 21 66282779

Mob.:+98 912 1394023

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