×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Welder Qualification & Range for electrodes
2

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









 

RE: Welder Qualification & Range for electrodes

Eck 75,
If you mean D1.1, yes.  See Tables 4.12 & 4.13   

RE: Welder Qualification & Range for electrodes

Weldtek, I do not have a current edition of D1.1 but my '98 edition states in Table 4.5 that an increase in filler metal strength classification is a PQR essential varible requiring WPS requalification.

RE: Welder Qualification & Range for electrodes

qcrobert,
'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 range of electrodes for which the welder is qualified under the auspices of AWS D1.1 is based on the F-number.

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

Yes I understand that weld strength is not an essential variable for WPQ and that it is the same F number, I was just uncertain if OP had a PQR for the higher strength electrode.

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

the intent of WQT is to prove that the welder can deposit a weld without defects. it is nothing to do with the strength if the F numbers were same for the above mentioned electrodes.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources