Welder Qualification & Range for electrodes
Welder Qualification & Range for electrodes
(OP)
Hi,
Please can anyone advise on following query I have regarding the range of electrodes a welder can use. For example if a welder has been qualified previously and certification is still valid for welding E7018 can he for example weld as per WPS with and E10018 electrode without having to re-qualify. Code AWS D1.1 20
Please can anyone advise on following query I have regarding the range of electrodes a welder can use. For example if a welder has been qualified previously and certification is still valid for welding E7018 can he for example weld as per WPS with and E10018 electrode without having to re-qualify. Code AWS D1.1 20





RE: Welder Qualification & Range for electrodes
If you mean D1.1, yes. See Tables 4.12 & 4.13
RE: Welder Qualification & Range for electrodes
RE: Welder Qualification & Range for electrodes
'if a welder has been qualified previously and certification is still valid for welding E7018'
I believe the OP is asking about welder certification not procedure qualification.
RE: Welder Qualification & Range for electrodes
The F-number for the SMAW process can be though of as a index indicating the "ease of use." A low F-number, i.e., F-1 requires relative low skill to use. However, as the F-number increases from 1 to 4, increased skill is required.
A welder that used a F-1 electrode when he qualified is only qualified to use F-1 electrodes for production welding.
A welder that used a F-2 electrode when he qualified is limited to F-1 and F-2 electrodes for production welding.
A welder that used a F-4 electrode when he qualified is qualified for F-4 and any F-number lower than 4 for production welding.
Things get a little more complicated when dealing with ASME Section IX, but that wasn't your question.
The bottom line is that the strength of the filler metal isn't an essential variable when considering welder qualification and the range of electrodes he is qualified to use. The F-number and position are essential variables. I slipped position in because the welder is limited by position even if the electrode isn't.
Best regards - Al
RE: Welder Qualification & Range for electrodes
Parden me I tend to read things into something simple. At least that's what my wife tells me. :)
QCRobert
RE: Welder Qualification & Range for electrodes