Weld layer width allowable

By swsweld (****)

Date 09-30-2008 16:03

Bill, I think the multi pass fillet would contradict the single pass layer intentions.

By flamin

Date 09-30-2008 16:09

Also, the multi pass fillet would need to be qualified under Section 4 Part B (4.11.2). I don't believe it is prequalified.

Jason

By ctacker (****)

Date 09-30-2008 16:45

Why do you say A multipass fillet needs to be qualified?

If you look at table 3.7 max. electrode diameter for flat fillet, using SMAW is 5/16" EXCEPT root passes which is 3/16"
so how could you use 5/16 rod without having a root pass using 3/16" or smaller electrode?

By flamin

Date 09-30-2008 16:51

I stand corrected.

Jason

By Bill M

Date 09-30-2008 17:20

So what is the max weld layer width for multi-pass fillet welds? Can a flat 1-1/2" fillet weld be covered with a single pass for example?

By motgar

Date 09-30-2008 18:46

Bill,

I would say no, based on the weld type column stating, any layer of width.

The only two situations that come close would be multiple electrode SAW, or note e for GMAW/FCAW. Both of these state: if width exceeds one inch then to split layers.

By Bill M

Date 09-30-2008 20:25

I agree, but then what is the max single pass layer width limit for a mult-pass fillet weld on plate using FCAW in the horizontal position? Do you have to split layers when over 5/8" wide, or is that just for a butt weld? (table 3.7 note 'e')

A single pass FCAW 1/2" fillet weld is acceptable with a face width of 0.71".