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Up Topic Welding Industry / General Welding Discussion / SMAW Electrode useage
- - By nws Date 03-12-2002 05:41
I was recently talking with a welder that used 6010 for a root pass and for the fill and cover passes used 7018. I asked if it was a qualified procedure and who qualified it, he did not know. My question is, is that a standard practice? I don't remember that in my AWS D1.1 code book, but I do remember that would change my electrode classification.
Parent - - By pipewelder_1999 (****) Date 03-12-2002 13:38
Yes it is a standard prctice.

The D1.1 code may not have this test or procedure but that does mean its not used.

The test described is usually given to pipe welders in accordance with ASME Sec IX. This test allows the welder to weld pipe in all positions, without backing. The qualified range for using E-6010 would be 2 times the overall deposited thickness of the E-7018 and E-6010. The qualified thicknes range for E7018 would be 2 times the deposited thickness of the E-7018.

In some cases it is common to have multiple processes/Filler metals for one test.

Have a good day

Gerald Austin
Parent - - By nws Date 03-12-2002 16:03
Thanks Gerald for then information. I just need to take the blinders off and look at the whole picture. I knew that using GTAW for root passes was a common practice and the filler and cap passes a different process. Now I would like to add to my question is what does the 6010 do for you on the root pass that the 7018 does not provide. sorry to be so naive about this.
Thanks
NWS
Parent - - By Wildturkey (**) Date 03-12-2002 16:08
NWS,
the E-6010 is used for the root pass because of its penatration and fast freezing capabilities. it is hard to run a E-7018 open butt, although i have seen a procedure for it.
Parent - - By DGXL (***) Date 03-12-2002 16:24
The D1.1:2002 addresses the use of multi-electrode/multi-process WPS's in Section 4, 4.1.1.2. They (AWS) permit the use of their prequalified proprietary WPS's (e.g.: B2.1-1-201-96). This is one of their WPS's for pipe using E6010 and E7018.

This reply is in reference to the original post.
Parent - By Wildturkey (**) Date 03-12-2002 17:10
I did not mean to imply that I did not know that there was a procedure for Multi-electrode/ Multi-process. But back in the day I had to take a 1" A36 plate, single V-groove, with 1/8" land and 1/8" root opening using a E-7018. It was the first time I had ever seen a procedure and test like it.
Parent - By pipewelder_1999 (****) Date 03-13-2002 03:03
The only advantage in my opinion is the ability to better control the root contour. This is more noticable on joints with variations in fitup

The root contour is not a reason for rejection as far as D1.1 goes. So for structural welding, I don't see a need for the 6010. T, K, and Y connections with tubing/pipe is not one of those areas I have much experience with but I think they do them with 7018. Or at least thats what it looked like by the coupons I saw. (Lots of texture).


Good Day
Parent - By Seldom (**) Date 03-12-2002 20:16
Recently there was a pretty decent (33 posts) discussion similar to this topic back in January. Scroll back a couple of pages until you find "E6010 & E7018 Combination"
Up Topic Welding Industry / General Welding Discussion / SMAW Electrode useage

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