1/16 coreshield

Date 11-05-2003 03:19

What is the design of the joint? What position? Yes, a weld could be applied, but if you are asking for 100% penetration and using a butted joint, the answer is no. It could be done with a square groove joint and backing material, but it depends on what you are trying to accomplish and whether there is a code involved as to how the job should be approached.

By jwright650 (*****)

Date 11-05-2003 11:56

The full pen joint that fltjwl is referring to would be something like the prequalified joint in D1.1 " B-L1a-F ", since you mention using core shield. 3/8" would be the max thickness and the root would also have to be 3/8". To do the same joint without a backing bar " B-L1b-F ", backgouging the second side would be necessary to achieve full pen and the fit-up dims change to 0" to an 1/8".
I've rambled too much without knowing what you are asking for, so i better stop,
John Wright

By CHGuilford (****)

Date 11-05-2003 14:11

As was mentioned, it is possible. Maybe not efficient, but possible. You have to allow enough space (gap) in the joint in order to achieve proper fusion, similar to the Option 2 Fillet Weld Test. D1.1 Standard Details address what works in production. It is NOT possible to full pen (CJP) with 1/16" FCAW, even at 440 amps, without some space between the plates.
Partial pen (PJP) is another matter. The weld nugget will melt into the plate somewhat. You would need to cross section the weld to tell how far.

Chet Guilford