Hi
In your case when you are welding SA240 Type 310 which has nil ferrite, its very important that you use the correct grinding wheel.
If you use Silicon carbide grinding wheels for this material, there are chances of Si pickup which affects the Ferrite Number by increasing the Cr equivalent. Hence grinding with silicon carbide wheels is not permitted in urea service.
Regards
Prem Nautiyal
9769316004
On Monday, December 16, 2013 3:38 PM, "george.dilintas@gr.bureauveritas.com" <george.dilintas@gr.bureauveritas.com> wrote:
check this
(See attached file: Iron contamination and rust staining on stainless steel.doc)
best regards(See attached file: Iron contamination and rust staining on stainless steel.doc)
Dr. Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
API 510 Inspector
I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS
Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)
Hrushikesh Sangamnerkar ---16/12/2013 06:31:37---A sort of iron contamination. I am not sure in this case. That's why I want some references or yourFrom: Hrushikesh Sangamnerkar <hrushi612@gmail.com>
To: materials-welding@googlegroups.com
Date: 16/12/2013 06:31
Subject: Re: [MW:19617] Effect of grinding on ferrite content in urea service
Sent by: materials-welding@googlegroups.com
A sort of iron contamination. I am not sure in this case. That's why I want some references or your experiences in this matter.
On Dec 15, 2013 6:16 PM, <george.dilintas@gr.bureauveritas.com> wrote:
Do you mean Iron contamination?best regards
Dr. Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
API 510 Inspector
I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS
Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)
Hrushikesh Sangamnerkar ---15/12/2013 09:47:43---Dear all I would like to know what is effect on ferrite due to grinding. I haveFrom: Hrushikesh Sangamnerkar <hrushi612@gmail.com>
To: materials-welding@googlegroups.com
Date: 15/12/2013 09:47
Subject: [MW:19598] Effect of grinding on ferrite content in urea service
Sent by: materials-welding@googlegroups.com
Dear all
I would like to know what is effect on ferrite due to grinding. I have heard and also practically observed it that grinding tends to increase the ferrite content. Also its not permitted on job. But I dont have any references. Kindly share your experience if any.
Base metal- SA 240 type 310
Filler metal - 25.22.2 LMn
Process - GTAW
Thickness - 5mm
Filler metal - 25.22.2 LMn
Process - GTAW
Thickness - 5mm
Thanks and regards
Hrushikesh H Sangamnerkar
Hrushikesh H Sangamnerkar
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