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  1. Hosseinelahi

    Maganetic Test (MPI)

    For the magnetic test on a painted surface which one is better? AC or DC
  2. Hosseinelahi

    Can Post weld heat treatment be replaced by Preheating

    One of our contractors claims that the PWHT could be replaced by preheat; I want to know if this is correct. Is there any standard for confirming this claim.
  3. Hosseinelahi

    WPS for repairing welds and cast

    I think I might have made a mistake in my request and there's been some misunderstanding . I really know how to write a WPS but I have problem with WPS for repairing welds and casts which have some defects: - Is there any difference with common WPS and WPS for repairing - How PQR is done for WPS...
  4. Hosseinelahi

    WPS for repairing welds and cast

    I need a WPS sample for repairing defects in welds and cast parts
  5. Hosseinelahi

    Hardfacing

    I am working on overlay Stellite 6 on 410 martensitic stainless steel by gmaw. I need to know preheat and PWHT for hardfacing. Is there any standards, journal articles, catalogue, … for this purpose.
  6. Hosseinelahi

    Using 316 electrode instead of 309

    I am working in a company which makes valves for sour gas. In our procedure we have to use 309 electrode as a buffer and 316 electrode for the final but the sub contractor has made a mistake and they used 316 for both layers. The final composition is in the range and no cracks were observed and...

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