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  1. tonnesen

    WPS with impact tests and PWHT

    Ok, thank you all! So, I can PWHT the thickness at the production accordingly to the design code recomendations time/in, with the maximum time and thickness limited by the time at the qualification x 1,25.
  2. tonnesen

    WPS with impact tests and PWHT

    weldtek and metengr, thank you for your aswers. I agree with you about the PWHT limiting the maximum thickness qualified, but what about the second question? If I use a 50 mm coupon the range qualified will be from 16 to 62,5 mm (1,25 x coupon thickness), but if my production weld is 16 mm...
  3. tonnesen

    WPS with impact tests and PWHT

    I have a question concerning QW-407.2, when I qualify a WPS according to ASME Section IX with impact tests and PWHT this variable becomes essencial, so my question is if my coupon for the PQR is 25 mm and the PWHT is 1 hr, the range of thickness qualified is from 16 to 50 mm. Now suppose that in...
  4. tonnesen

    Welding SA-350 LF2Cl1 to SA-516 Gr 70N

    metengr, thank you for the help! stanweld, Do I need to do this even if I apply a localized PWHT?
  5. tonnesen

    Welding SA-350 LF2Cl1 to SA-516 Gr 70N

    metengr, thank you for your answer, so the nozzle neck manufactor should heat treat the component in accordance with the requirements of SA-350, and I (the vessel manufacturer) should determine the need for PWHT by ASME Section VIII div 1, correct? I read the paragraph UF-31(2) that says: (2)...
  6. tonnesen

    Welding SA-350 LF2Cl1 to SA-516 Gr 70N

    Hello, We are going to weld a SA-350 LF2Cl1 nozzle neck to a SA-516 gr 70N head. As I never worked with forgings, I was reading the SA-350 and found that the piece will be normalized and tempered or quenched and tempered, based on this I would like to know if after welding the nozzle neck to...
  7. tonnesen

    PWHT

    metengr, In your opinion, in this case what part of the welded joint should be considered as the nominal thickness? The head thickness, because it's a full penetration joint?
  8. tonnesen

    PWHT

    Another information is that the groove is a double bevel and we have fillet welds in both sides.
  9. tonnesen

    PWHT

    Hello, I would like some help in determining the necessity of PWHT because I didn't understand very well the paragraph UW-40(f)(5)(d) about determining the nominal thickness of groove+fillet weld. The groove design is similar to that in figure UW-16.1 (y-1). The weld is between a head and the...
  10. tonnesen

    Hardness test and PWHT

    Hi, In my company we have a internat standard that recommends to do a hardness test after PWHT in the HAZ and in the weld, obviously to evalute the PWHT, but we have to compare these values with some standard value of maximum hardness after PWHT. I only found this kind of rereference in ASME...

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