Use ER90S-B9/E 9015-B9 welding consumable and use Induction method for pre-heat or Interpass temperature maintenance,,Set minimum 200C temperature and After welding do Intermediate post weld heat treatment. i.e after welding keep temperature minimum 250C and hold it minimum 1hour then cool down by 75C/h then allow free cooling under insulation.
-- Hope for the best,,,,
Wishes
Izhar.
On Wed, Jul 27, 2011 at 7:14 PM, sudhakar kuppuswamy <mechsudhakar@gmail.com> wrote:
dear all,
please share your experience in repair welding of P91 or P92 ? please post your valuable welding tips like preheating techniques,filler metals that can be used for repair & so on !!!--
With regards,
Sudhakar.k
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