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Re: [MW:33999] PWHT time

By Materials & Welding
The rate of Heating / Cooling to be considered.
Approximately  250 Deg Celsius per hour for Carbon steel. 


Regards
V.Kingsly Geo

On Mon, 10 Oct 2022 at 10:26, Muhammed Aaftab Khan Pathan <aaftab.khan2222@gmail.com> wrote:
Soaking time 6 hours + 1 hr heating time + 1 hr cooling time = 8 hours total PWHT Cycle time.

On Sat, 8 Oct 2022, 14:15 Student, <nabeel233@gmail.com> wrote:
The following is an exam question. Please guide how to do it

A  one and Half inch of material has to be PWHTed from 600 F to 1350  and shall be kept at 1350 F for 6 hours. It has to be cooled down back to 600 F. If the rate of heating and cooling is 500F per hour per inch  , what is the total time for PWHT.  Do not consider heating the material up to 600F in the calculation

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