Pre Qualified welding procedures

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  • January 29, 2018 at 6:20 am #1695
    bulldog39
    Spectator

    What are Pre Qualified Welding procedures?.

    What requirements are to be met for a welding procedure to be deemed pre-qualified?

    January 30, 2018 at 7:42 am #1694
    ASNZS
    Spectator

    lot of views and no replies? get yourself a copy of the applicable standard

    January 31, 2018 at 2:51 am #1696
    Ballbearing
    Spectator

    Pre-Qualified Welding Procedures are procedures that have been welded and tested previously by an industry specific group and are thereby deemed “Pre-qualified”.
    Eg. AS/NZS 1554 Part 1 only requires a macro to “qualify” the procedure if all requirements for prequalification are met. Otherwise, full mechanical testing is required.
    AWS D1.1 has the same thing except a macro is not required.
    Hope that helps,
    Cheers,
    BB

    February 1, 2018 at 5:58 am #1697
    ASNZS
    Spectator

    i tend to agree with BB, but the prequalified preparations are just that, preparations, the tables in 1554 dont suggest amps, volts, consumables etc to produce a test piece, for the qualification of a procedure, and thence a WPS

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