박성훈
2013-05-09 16:46:22
참고로, ASME IX 관련항목을 아래에 붙여 놓았습니다.
문의 드리는사항은
(a)항에 따라 하나의 WPS (GTAW+FCAW) 를 가지고 GTAW PQR 과 FCAW PQR로 분리가 가능한지요??
(b)에 보면 2개의 PQR로 하나의 WPS는 만들수 있다고 되어 있고 또한 여기 Q&A에 사항들을 보면 가능 한거 같은데
그반대의 사항에는 어떠한 코멘트가 없어서 문의 드립니다
QW-200.4 Combination of Welding Procedures
(a) More than one WPS having different essential, supplementary
essential, or nonessential variables may be used
in a single production joint. Each WPS may include one or
a combination of processes, filler metals, or other variables.
Where more than one WPS specifying different processes,
filler metals, or other essential or supplementary
essential variables is used in a joint, QW-451 shall be
used to determine the range of base metal thickness and
maximum weld metal thickness qualified for each process,
filler metal, or set of variables, and those limits shall be
observed. Alternatively, qualification of WPSs for root
deposits only may be made in accordance with
QW-200.4(b).
When following a WPS that has more than one welding
process, filler metal, or set of variables, each process, filler
metal, or set of variables may be used individually or in
different combinations, provided
(1) the essential, nonessential, and required supplementary
essential variables associated with the process,
filler metal, or set of variables are applied
(2) the base metal and deposited weld metal thickness
limits of QW-451 for each process, filler metal, or set of
variables are applied
(b) For GTAW, SMAW, GMAW, PAW, and SAW,
or combinations of these processes, a PQR for a process
recording a test coupon that was at least 1⁄2 in. (13 mm)
thick may be combined with one or more other PQRs
recording another welding process and any greater base
metal thickness. In this case, the process recorded on the
first PQR may be used to deposit the root layers using
the process(es) recorded on that PQR up to 2t (for shortcircuiting
type of GMAW, see QW-404.32) in thickness
on base metal of the maximum thickness qualified by the
other PQR(s) used to support the WPS. The requirements
of Note (1) of tables QW-451.1 and QW-451.2 shall apply.