requalification of welders Electrode change???

Date 08-20-2012 11:36

hi all, someone supports me with their knowledge and affirms this, or is wrong.

I have 2 WPS
WPS "X" for welded joints under material specifications (group I) with (group I)
The following steps of welding electrodes that are listed:

Welding process process Filler metal
   class - diameter
1 root SMAW E-6010 - 3/32”
SMAW E-6010 -1/8”
2 hot Step SMAW E-6010 -5/32”
3 filling    SMAW E-7018 -1/8”
5/32”
4 view SMAW E-7018 -1/8”

I have this WPS qualified welders, AWS D1.1 allows me to apply these welders weld using WPS "Y"??
and
WPS "Y" for welded joints under material specifications (group II) with (group II)
The following steps of welding electrodes that are listed:

Welding process process Filler metal
class diameter
1 root SMAW E-7018 3/32”
2 hot Step    SMAW E-7018 1/8”
3 filling SMAW E-7018 1/8”
4 filling SMAW E-7018 5/32”
5 view    SMAW E-7018 1/8”

According to Table 4.12 of AWS D1.1 2006, understand that these welders must WPS requalify to "Y".
My interpretation is that correct?

really appreciate your assistance, rusbeli

By MKNIK

Date 08-21-2012 10:17

someone help me with this issue,
thank you for your intervention.

Greetings, rusbeli

By 803056

Date 08-23-2012 02:38

More information is required to properly assess your situation.

For instance, is backing used? Does the WPS call for an open root?

Until all the details are known, it would be no more than a SWAG on our part to offer an opinion.

Is the welder current qualified and if so, what were the conditions of the test taken by the welder?

Al

By eekpod

Date 08-23-2012 10:31

MKNIK

I read your question as if a welder is qualified to weld with 6010, is he also qualified to weld with 7018 per table 4.12?

Table 4.12 (2) says "To an SMAW electrode with an F-number higher (see Table 4.13) than the WPQR electrode F-number".
So look at Table 4.13 and 6010 is in group F3, and 7018 is group F4. So if your welder is certified to F3 he needs to re-test to an F4 to be certified to 7018.
This is why most coompanies when certifiying welders automatically use an F4 group so that they are certifed for any group under it (F3,F2,F1)
Hope this helps.

By MKNIK

Date 08-25-2012 11:19

and in this case, I can use the wps "Y" as the welders were qualified with the "X" in the first welds see that was done with E-6010 and E-7018 subsequent (F4), and WPS "Y" requires all do with E-7018 (F4)?

thank you for your attention

rusbeli

By eekpod

Date 08-27-2012 10:15

Correct, Use the Y as in your original description, then the welders are qualified for both X and Y (6010 and 7018).