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Re: [MW:12962] Pre heating

By Materials & Welding
complete atleast 25% of thick -weld deposit and do post heating, leave
to room temp. Again preheat and carry out welding
Pandithan

On 11/12/11, sedef pala <santasatana@gmail.com> wrote:
> According to standart requirement at least70% should be completed.In
> your situation P11 material is not much problem.you should mt or pt on
> the weld to check if the any cracks are inside.if there are cracks you
> need to remove them and get weld in inteepass temperature before
> welding.then complete the weld.
>
>
>
>
> On 11/10/11, venkat ramana <venkatgps.ramana@gmail.com> wrote:
>> Dear All,
>>
>> While welding of ASTM A335 Gr P11, what to do if welding was stopped after
>> Root
>> Pass ,Hot Pass and One Fill-Up done without completing the job? Can we do
>> immediately Post Heating for the un-finished job and continue welding next
>> day? or Should we cut and re-weld the joint?
>>
>> I have one more doubt... In the above situation what if welding and
>> Pre-heating(coil heating) was stopped due to power failure for 2 to 3 hrs
>> and the joint has to come to room temp. Should the joint be cut and
>> re-welded?
>>
>> Regards
>> Venkat (QC Inspector)
>> Qatar
>>
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>>
>
> --
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> 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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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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