PQR FAILED
PQR FAILED
(OP)
Mates,
Please help. My PQR done was failed in hardness and impact test.
Details was
API-X60 Pipe(P1,Gr2)-16 inch Dia, 23mm Thick
Flange - A707 CL3 L5,(Not included in ASME sec 9 material grouping),16 inch Dia, 23mm Thick
GTAW-ER70S-2 -ROOT PASS & HOT PASS
SMAW-E7018-FILLING & CAP
CODE B31.8
NO PWHT Because as per code above 32mm only requires PWHT
PREHEAT done is 150 degress C,
It was passed in bend test and Tesile test... In Impact test test it passed with -18 C for parent metal (Flange&Pipe), Weld metal (SMAW), HAZ(SMAW & GTAW)but it failed on Weld metal (GTAW)
Please ask on your expertise advise.
Thank you
Please help. My PQR done was failed in hardness and impact test.
Details was
API-X60 Pipe(P1,Gr2)-16 inch Dia, 23mm Thick
Flange - A707 CL3 L5,(Not included in ASME sec 9 material grouping),16 inch Dia, 23mm Thick
GTAW-ER70S-2 -ROOT PASS & HOT PASS
SMAW-E7018-FILLING & CAP
CODE B31.8
NO PWHT Because as per code above 32mm only requires PWHT
PREHEAT done is 150 degress C,
It was passed in bend test and Tesile test... In Impact test test it passed with -18 C for parent metal (Flange&Pipe), Weld metal (SMAW), HAZ(SMAW & GTAW)but it failed on Weld metal (GTAW)
Please ask on your expertise advise.
Thank you





RE: PQR FAILED
RE: PQR FAILED
RE: PQR FAILED
RE: PQR FAILED
Not all filler metals are created equal.
Best regards - Al
RE: PQR FAILED
the harndness VHN shall be below 250VHN however the test had exceeded to 280 for value HAZ.
I only used ER70S-2 Because the design temp is -18 only and i had experience passing it using x60 and same filler wire.
however because as client procedure than more than 10mm shall have seperate impact test for GTAW & SMAW...
thus gtaw deposit only is 3.33 mm so the third party laboratory decided it to make -34 due to subsize... which i disagree
WELDSTAN
before the impact test.. it was tested in RT and it pass..
I also make practice for welder to make it fast travel speed in gtaw & smaw welding
GTAW
the material MTC has value impact value of 50kj in -60 degress
and filler material (ESAB) as per MTC is also capable to do the test temperature
RE: PQR FAILED
RE: PQR FAILED
That is the hardest part because of client standard procedure to make separate qualification for GTAW & SMAW if the Thickness of test coupon is more than 10 mm
RE: PQR FAILED