WELDING SYMBOL - AWS 2

[ShanXXX]

Hi All,


I’m still relatively new to AWS welding symbols and need some help understanding the one below. I’ve searched through various references but couldn’t find a clear explanation.


From what I can tell, it looks like a fillet weld, but that seems incorrect since the joint is a butt joint. Also, I’m unsure what the number “1” refers to in this context.

 

[DVWE]

Yes, that is incorrectly drawn as a double sided fillet weld. It should be a butt joint as you have indicated. The “1” refers to the size or height of the fillet weld leg.

AWS A2.4 Weld Symbols is the best reference in the industry for definitions of welding symbols. I recommend anyone who deals with welding symbols to get a copy.

 

[Ron247]

Is the weld symbol a metric product? The "1" may be 1 mm. I am not sure, I have never seen a weld symbol that uses metric.

I agree the symbol shows a fillet weld where you cannot create a fillet.

I also agree, A2.4 is the place to start.

 

[3DDave]

As I recall the symbols, it is likely to require a square groove weld; the default is full penetration, but I'm a bit unsure when used on tubing, which this may be.

 

[ShanXXX]

Additional information: This part is a solid aluminium 6061. I think i will create a proposal

 

[MintJulep]

@ShannXXX

Both the original drawing excerpt and the updated rendering are ambiguous.

So, while we can say that the filet weld callout is likely incorrect, we can't suggest the correct weld and associated callout.

 

[3DDave]

That joint looks like a bit of trouble. It is rare for an interior corner to be perfectly formed. This will prevent the green block from fitting tightly into the corner, particularly if there is a desire to put a fillet weld between the purple and blue sections, which will have to be done before the green block is in place.

If those are tubes there is some challenge to welding to the thick block, especially if the desire is for the top of the block to be flush with the tubes. The temptation will be to grind the weld flush afterwards, but that will remove the majority of the weld. If a significant relief is machined into the block, then a simple fillet weld can be made; any grinding will leave as much depth of weld as the depth of the relief. If done with some planning there may be no need to deal with that weld.

To know more requires a conversation between you and whoever is going to perform the welding; at least consult with a welder who has done this sort of work.