[MW:2760] Re: 2742] Weld Crack at Root trough weld metal

Hi Varmazyar,
Yes we can use 6010 or 7018 at root.But i our
case , why it happened , why crack came ??
Regards,
YC.Shiva,
QA/QC Engg,
Doha Qatar,
+974 6166465.
On 7/22/09, Ali Varmazyar <av-ssg@msa.ir> wrote:
>
> Surry, I forget to talk about your service. if your service is sour then you
> must consider Nace MR0175/ISO15156-2 requirements too.
>
> Best Regards
>
> A. Varmazyar
>
> MSA -Welding Engineering Department
> Msa,Arak,Markazi,IRAN - P.O. 148
> Tel.: +988612172725~6
> Fax: +988612172702
>
>
> -----Original Message-----
> From: materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com] On Behalf Of shiva
> Sent: Tuesday, July 21, 2009 6:04 PM
> To: Materials & Welding
> Subject: [MW:2742] Weld Crack at Root trough weld metal
>
>
> We are using API 5L X65 grade material for sour environment. With
> reference to our WPS we used (Ador electrodes) e 8010 for root and
> 8018 for hot fill pass.
> We took NDT and its okay. But after 1 month 4 weld joints crack. We
> checked the macro hardness for existing and cracked joint . There was
> a high hardness eg 351, 329 on root and in weld metal cap side 280
> above. Which is very high.
>
> Can you please tell me for this material what type of electrodes to be
> used? And why this occoured ?? And what may be possible reason for
> this occourance?
>
> Regards,
> Y.C.Shiva,
> QA/QC Engineer,
> +974 6166465
> Doha Qatar.
>
>
>
> >
>

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