Wednesday, March 2, 2011

Re: [MW:10093] PWHT

Dear Mr IIan,
I did not understand your question?
 
You can calculate the Rate Of Heating / Rate Of Cooling from ratio of change in temp(DegC) to change in time (Hrs)...same as u calculate the slope of a straight line dy/dx.
 
Just calculate the total time taken in hours to reach 720DegC from 300DegC/ 400DegC
and calculate the ROH.
On Tue, Mar 1, 2011 at 7:46 PM, k.ilangkumaran ilangkumaran <k.ilangkumaran@yahoo.com> wrote:
Dear experts,
 
                  As per the ASME B 31.3 table 331.1.1 the temperature range is 704-746 deg C. How do we find out the rate of raising and cooling temperature?
 
Regards
Ilan

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[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...