Sir why penning s not required in stellite?
On Sun, 2 Jun 2019, 11:14 am Kannayeram Gnanapandithan, <kgpandithan@gmail.com> wrote:
For stellite peening is not required--On Sat, 1 Jun 2019 10:28 pm Gopalakrishnan G, <gopal2408@gmail.com> wrote:Thickness is 90mm and penning for stress relieving ( heat stress)--On Thu, 30 May 2019, 6:45 pm Kannayeram Gnanapandithan, <kgpandithan@gmail.com> wrote:Why are you doing penning? Not 100%. crack free possible if the hardness is more than 35HRC. Why preheat--On Wed, 29 May 2019 9:34 pm Gopalakrishnan G, <gopal2408@gmail.com> wrote:Dear experts--Whether it is possible to achieve crack free in stellite 6 welding?I have a job in which I have to carry out hardfacing by stellite 6 and buffer layer with Tenalloy (E-7016).Preheating carried above 350c and interpass 250c with penning and after completion of welding job is covered by heating blanket.When I carry out dye penetrant crater cracks appears. But my client needs with 100% crack free.plz kindly give ur valuable guidelines. Thk u.RegardsG.Gopalakrishnan
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