Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

PWHT Time Calculation

Status
Not open for further replies.

nabeel3

Mechanical
Joined
Dec 14, 2006
Messages
146
Location
SA
A Half inch thick plate is to be PWTH ed. The rate of heating and cooling shall be at a pace of 500 degrees F per hour per inch.What is the total time required for PWHT, if the material is heated from 600 degrees to 1350 degrees F , soak for 6 hours and cool from 1350 to 600 degree .?

 
Code of Construction is required. You state rate of heating/cooling to be 500F/hr per inch. This would mean 1000F/hr for 1/2". I know of no Construction Codes that will allow this much heating/cooling...maybe the farm code.
 
Sounds like an exam question to me...

Regards

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand
 
Dear David and SnTman
This was an exam question. If the heating rate is 500 degrees per hour per inch, how much time required for half inch.
Thanks
 
39 min + 6 hrs + 39 min

DHURJATI SEN
Kolkata, India


 
Dear

Can anyone tell what is the time required for half inch plate to heat 250F is the heat of rating is 500F per hour per inch
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top