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  1. warrior1987

    Heat affected zone removal by grinding

    Thank you for your anwers. I was thinking that one approach could be to perform non-destructive metallography to determine the approximate width of the HAZ.
  2. warrior1987

    Heat affected zone removal by grinding

    Hi everybody, I have a question. Thank you for your time. We need to remove a complete weld on a shell that belongs to a pressure vessel. The removal will be performed by grinding. We will remove both the weld metal and the heat-affected zone (HAZ). Here’s the question: the HAZ on austenitic...
  3. warrior1987

    Nitronic 50 (austenitic stainless steel) welding

    Hi Ed, thanks for your response once again. We will try to use a different gas mixture, either Ar or Ar-N2. We opted for a gas mixture that contained oxygen to achieve a GMAW spray transfer. The weld metal has a ferrite content ranging between 5-10%. The chemical composition of the weld...
  4. warrior1987

    Thickness in welding.

    Hi everybody, I would like to hear your opinion on the influence of thickness in welding and why it's so important. I know that it can affect the cooling rate, for example in carbon steels and low alloy steels. When the thickness is increased, it's more probable that welding generates harder...
  5. warrior1987

    Nitronic 50 (austenitic stainless steel) welding

    Hi Ed, Thank you for your response. Yes, this is annealed material with a thickness of 20 mm. The welds are clean with some minor discolorations. Could you please explain why discolorations are important? "Based on my experience, surface discolorations should not be a major issue and can be...
  6. warrior1987

    Nitronic 50 (austenitic stainless steel) welding

    Hello everybody, I have some questions regarding Nitronic 50 welding. I conducted some tests using the GMAW and SMAW process with ER209 as the recommended filler metal for welding Nitronic 50 to achieve similar mechanical properties. However, the impact properties of the weld metal are low...

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