it seems thatYou do not want to use ROOT PASSS WITH FLUX CORED filler wire and want to use solid wire with backing gas.The query is tricky one.it has many variablesJoint design :Welding with backing to Welding without backingBacking gas :Addition of backing gas with Solid filler wireQw 404.23 and QW 402.5 are there but not that clear to support your query.Advice :Qualify PQR with backing gas with Solid Wire ER308L for root pass as well as filler passes.--On Thu, 10 Sep 2020, 12:19 K K, <karan.hbl@gmail.com> wrote:Dear All,
Please clarify some below points.
I have previously qualified PQR, details as below.
PQR with ASME sec.IX and B31.3 and API 582.
Process - GTAW (Manual)
Base Metals - ASTM A312 TP304L to STM A312 TP304L
P.No - P8 Gr.1 to P8 Gr.1
Test coupon Thickness - 5.54 mm
First Process - GTAW - SFA - 5.22, AWS - R308LT1-5 , F.No - 6,
A.No - 8, Size of Filler .M - 2.2 , F.M.Product from - Flux-cored, Weld Metal Thickness -
1.5mm.
Second Process - GTAW - SFA - 5.9, AWS - ER308L , F.No - 6,
A.No - 8, Size of Filler .M - 2.5 , F.M.Product from - Solid, Weld Metal Thickness -
4.04 mm.
According to red highlighted (Second process) can I use to prepare WPS.
And Thickness range 1.5 mm to 8.08 mm, other all parameters in WPS shall be as above in red highlighted.
I don't want to use the first process.
Please let me clarify, if any changes, please guide me to prepare WPS.
Regards
KK
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