Monday, January 21, 2013

Re: [MW:16556] PWHT TEMP.RANGE IN CODES

Dear friend ,
 
    AS per code if u refer TWI-3.2 swnior welding inspector
 
UCT= Annealing ,Normalising And Hardening
Normally heating 50 degree beyond its A3 or Upeer Critical Temperature then soaked for 1 hour for every 25 mm of thickenss..
 
LCT= Tempering,Stress Relieving and Pre-heating...
 The temperature between 200 degree to 650 degree..

Regards
shankar
Welding Inspector
saudi arabia

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