On 7/23/09, rajagopal kannan <rajagopal.kannan@gmail.com> wrote:
> Hi,
> Have you done PWHT. These materials normally releases the stress in HAZ
> after subjecting it to atleast 3 1/2 hours soaking.
> Thanks and Regards,
> K.RAJAGOPAL
>
> On Tue, Jul 21, 2009 at 5:33 PM, shiva <luvshiv2002@gmail.com> wrote:
>
>>
>> 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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