flare-bevel weld with profile to fill the gap 2

[DiegoLGraves]

How do I correctly specify that this flare-bevel weld (see attachment) needs to be filled flush to the outside edge? The material in this case is .125 aluminum sheet metal. We have been welding with a minimum throat of .12 but the weld has the appearance of being undercut or not filled adequately, and our customer is concerned (as a supplier to the military) that the weld does not appear complete.

My thought is to add a flat profile and state in the tail "FLUSH TO OUTSIDE EDGE". Is that the correct way to call it out or is there a standard way of stating to fill the joint completely?

tia, Diego

 

[gtaw]

"When in doubt, sketch it out."

In other words, show a section view through the area of concern. Add dimensions as needed to define the critical areas.

Best regards - Al

 

[MintJulep]

Just add the grind flush supplementary symbol.

This example shows it applied to a bevel-v, but it's the same for your flair-bevel.

 

[DekDee]

DiegoLGraves,
As per MintJuleps response but you can omit the G for grinding.
As per AWS 2.4 the single line means a "Flush" or "Flat" contour
Cheers,
DD

 

[tbuelna]

As others noted you should add a horizontal line below the legs of the weld symbol to indicate a flush weld surface profile. Looking at your weld callout I noticed that the weld dimension uses parentheses which would indicate it is a reference dimension. I think it would normally be hard to produce a flat weld profile with this kind of joint. So if you really need a flat profile on your finished weld it would probably need to be ground flush after welding.

However, like anything else, it is always a good idea to provide as much detail as practical with your weld callouts. More information is always better, and it requires very little effort on your part to provide it on a drawing. And never leave anything open to interpretation if you want a certain result.

 

[gtaw]

Doesn't anyone have a copy of the latest edition of AWS A2.4?

It isn't difficult to read, it's mostly sketches.

The number between the brackets is the weld size (throat dimension for those old timers or the young one's without the financing to purchase up to date references or using a reference from the early 70's).

If D1.1 is the governing standard, Table 2.1 provides the weld size based on the rounded edge, and welding process.

The design assumption is that the groove is filled flush. If not flush, the weld size is simple the value listed by Table 2.1 minus the amount measured less than flush. There is no requirement that the weld be filled flush provided it is capable of transmitting the required design load and it meets the minimum PJP weld size listed by Table 3.4.

The flush symbol added to the welding symbol is redundant, but who said redundancy is a bad thing? The flush symbol without a letter, i.e. "G", simply means the weld is flush as welded, that is, no mechanical finishing is required.


Best regards - Al

 

[DiegoLGraves]

Thanks Al, and all. The potential problem with the customer is the possibility of the integrity of the weld at the bottom of the joint. If the weld bridges at the bottom without proper penetration the only way to prove the weld is correct is to cut a cross section thru. The customer's incoming inspection weld consultant says if we fill the joint they will not question it, (unless there is some other visible imperfection.)

Kind regards for the input, Diego

 

[gtaw]

Fusion to the root of a flare groove is should not be expected.

A good rule of thumb (based on AWS D1.1) is that the weld size of the flare bevel groove will be 5/16 times the radius of the round edge. The weld size of the flare V-groove will be 1/2 times the radius of the smaller radius of the round edges of the flare V-groove. The values are conservative, but reasonable to achieve.

Best regards - Al