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Does change of electrode need requalification, AWS D1.1

Does change of electrode need requalification, AWS D1.1

Postby kuvilync » Thu Dec 26, 2013 7:00 pm

As per AWS D1.1 for two different WPS (WPS1: SMAW with E6010, WPS2: SMAW with E7018-1), please let me know if changing of electrode from E6010 to E7018 as well as from E7018-1 to E7018 needs requalification of procedures taking into consideration that both of procedures are used for production weldings that call for impact test. Moreover, please let me know if I have to requalify the welder.
Thanks
kuvilync
 
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Re: Does change of electrode need requalification, AWS D1.1

Postby Ballbearing » Fri Dec 27, 2013 12:34 am

kuvilync,
You cannot use an E6010 WPS to weld with E7018 and you also cannot use an E7018 WPS to weld with E6010.
You can use an E7018-1 WPS to weld with E7018 if they both have the same SFA classification.
If your welders were qualified on E6010 they cannot weld with E7018 but if they were qualified with E7018 they can weld E6010,
Hope that helps,
Cheers,
BB
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Re: Does change of electrode need requalification, AWS D1.1

Postby kuvilync » Fri Dec 27, 2013 11:15 am

Thanks a lot Ballbearing.
You cannot use an E6010 WPS to weld with E7018 and you also cannot use an E7018 WPS to weld with E6010.
You can use an E7018-1 WPS to weld with E7018 if they both have the same SFA classification.
If your welders were qualified on E6010 they cannot weld with E7018 but if they were qualified with E7018 they can weld E6010

Are the above coming by the impact test requirement or they are valid anyway? Please give me code reference.
regards
kuvilync
 
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Re: Does change of electrode need requalification, AWS D1.1

Postby Ballbearing » Fri Dec 27, 2013 11:55 am

kuvilync,
Please do not take this as personal criticism but you need to open the code book and look yourself - that is the only way to learn.
It took me maybe 2 minutes to find your answers in the essential variables for welding procedures and welder qualifications.

What will you learn by asking people to quote the exact reference for a very basic question ?
Most of us on these welding forums really enjoy solving a puzzle, locating an interpretation no-one knew about, or tracking down some specific information but we will only do it if we know the person asking the question has actually exhausted all efforts to answer it themselves.
Sorry for the rant,
Regards,
BB
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Re: Does change of electrode need requalification, AWS D1.1

Postby kuvilync » Fri Dec 27, 2013 6:35 pm

Ballbearing,

I fully accept your criticism though my questions come by poor knowledge and experience regarding welding codes and especially with respect to the AWS D1.1 for which I am a very new user. Nevertheless, following your guidance I finally found out the applicable code references. Relating to the procedures I have went through the table 4.5 as well as the table 4.6 because there is impact requirement and I think that the only relevant variable is the variable (5) of table 4.6. So, according to your reply the change from E7018-1 to E7018 is not considered to be a change of type of electrode. Could you please explain what does "type of electrode" mean and why E7018-1 and E7018 are of the same type? Relating to welder qualifications I have went through table 4.12 and I found out that the only relevant variable is the variable (2) and since the E6010 has F number: 3 and the E7018 and E7018-1 have F number: 4, it is clear that the welder needs requalification only for the switch from E6010 to E7018.

Moreover, you have told that I can use an E7018-1 WPS to weld with E7018 if they both have the same SFA classification. Is it possible the E7018-1 and E7018 to have different SFA classification? Please let us have your knowledge in this regard.

Many thanks for your valuable consulting
regards,
kuvilync
kuvilync
 
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Re: Does change of electrode need requalification, AWS D1.1

Postby Logosweld » Fri May 16, 2014 4:33 pm

since according to me welding is something like one should have good knowledge and well deserved qualification so any steps is sensitive so one should be fully qualified as well as knowledgeable for this
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Re: Does change of electrode need requalification, AWS D1.1

Postby claudconger » Wed Jan 25, 2017 6:38 am

I believe you are correct. Table 4.12 does not list electrode diameter as an essential variable for welder qualification. So, the welder himself/herself is not required to re-qualified, as a change in diameter does not affect the welders ability to put in a sound weldment. The WPS, on the other hand, would have to be written to accommodate diameters used in production.

I get called out once in awhile for putting ranges on a WPS by another CWI, for example: ER70S-X, rather than ER70S-3 or ER70S-6. My argument is, “It is not an essential variable”, and you may be limiting yourself by listing the specific classification. Same arguement may be made for electrode diameter in your case (SMAW).

Be aware Table 3.7 allows a maximum size of 5/32 inch for vertical low hydrogen electrodes (Note b).
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Re: Does change of electrode need requalification, AWS D1.1

Postby donalderrand » Mon Jun 19, 2017 7:20 am

Sound knowledge of welding process & good understanding of code or specification is critical. If you don’t have this, seek help. Many vendors, including distributors and manufacturers, may be able to provide you this type of assistance. Some may do it for free
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