Is it not recommended to use higher side also
On Thu, Feb 25, 2021, 8:45 AM 'Sankaran Sp' via Materials & Welding <materials-welding@googlegroups.com> wrote:
--Dear friend,when ever joining of two different P nos ( 5A+4) welding, following points to be taken care :1, Pre heating temp shall be maintained as higher Pno ( 5A)2, PWHT temp shall be maintained as per higher Pno(5A)3, Consumable shall be maintained as per lower Pno( 4)Regards,Sankaran.SPWelding & Metallurgy expert.On Wednesday, 24 February, 2021, 03:17:21 pm IST, Vishwas Keskar <vvkeskar123@gmail.com> wrote:Apply the rules applicable for Higher P.No. of the two materials being welded.P no 4 to P No 5A _ Apply criteria for P NO 5A materilas. Also consider pre heating addresed in WPS--On Wed, 24 Feb 2021, 07:13 EmaD FaRaHanI, <emad.farahani@gmail.com> wrote:Hello all,As Per ASME Sec VIII, appendix R preheat criteria are determined for different PNumbers.--But in case of welding of one BM from PNumber A to PNumber B, how can we determine the preheat criteria (temperature and thickness)?Thanks,
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