Yes I agree that induction heating is used for making pipebends and Apart from that for PWHT also it is being used. gerab and piping gulf confirm that they do take piping spool fabrication contracts and they use shop induction heating machines for PWHT and it is cost effective. portable induction heating devices are used by CCC and other big contractors for PWHT at field along with electric blankets.
With regards,
Kannan
| Raghuram Bathula <raghurambathula@gmail.com> Sent by: materials-welding@googlegroups.com 28/08/2008 18:38
|
|
as far as i know it is true to some extent induction heating is used
for bending in the preffabrication shops, but i am not aware of any
for PWHT of welds at site by induction heating.
In particular how it will effect in higher thickness (>30mm) over
conventional method, what is the advantage?
On 28 Aug, 21:32, Kannan.Sunda...@Linde-LE.com wrote:
> I understand that in projects like Borouge, Ruwais the main construction
> contractor CCC is using and are prefering the induction heating. As per
> my conversation the same as you have highlighted of the prefabrication
> spooling had been found to be more efficient and less time consuming and
> very acurate control of temperature, in comparision.
>
> With regard to portability as per the contractor, they are using both
> portable and as well as fabrication shop stationed machine. It is
> available on lease by quite a no. of suppliers in the gulf region in
> particular. I havn't checked out the names of manufacturer nor the leasing
> agents, but can find out.
>
> CCC also does have its own facility in the region in catering to various
> project sites of them. So in that sense it could be more efficient and
> cheaper solution on the run though the initial investment is high.
>
> With regards,
> Kannan
>
> Raghuram Bathula <raghurambath...@gmail.com>
> Sent by: materials-welding@googlegroups.com
> 28/08/2008 16:51
> Please respond to
> materials-welding@googlegroups.com
>
> To
> "Materials & Welding" <materials-welding@googlegroups.com>
> cc
>
> Subject
> [MW:1069] PWHT by Induction Heating Method
>
> Dear members
>
> Please share your experience on the subject method for pipe welds
> (PWHT to be carried at site), one of our client insisting for
> Induction heating instead of PWHT by conventional resistance coil
> heating.
>
> tho' i have seen literature on this I need info on availability (first
> hand experience) of the equipment, portability etc..
>
> I understand it is faster but advantageous in mass production, and may
> not be easier for site activities. i don't see any reason for this
> method over resistance heating
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