doubt on frame welding call out 1

[Vimalmechs]

Hi, I got a doubt in between reviewing a square tube weldment. Th designer called the square weld in th drawing(PFA). I beleive the welding call out should be flare bevel based on cost & practical easiness. Please help me to confirm whether I am right or wrong?.

As well please suggest me any good professional welding design books.which includes practical project based approach.

 

[racookpe1978]

That type of joint is usually has an all-around weld. Keeps the water out of the joint, is easier to paint, prevents racking motions that tears the ends of the two side welds out if they were not joined with the two end welds.

 

[EdStainless]

The weld passes on the 'long' sides can be tricky. The corners of these are quite rounded, so even if you cross piece is square cut you will have a fillet along there.
But the other two sides will need a bevel if you expect any penetration.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

 

[tbuelna]

If all you want is a weld along the two outside edges of the joint then the flare bevel (2X) callout is correct, assuming the tubing is rolled/welded steel material. Rolled/welded square steel tube typically has the rounded corners shown in your sketch, but square aluminum tubing is usually extruded and has sharp corners. So a weld joint at the same location with aluminum tubing would require some beveling of the joint edges, and would use a different weld symbol.

As EdStainless noted, the outside corner radius of rolled/welded steel tubing can be fairly generous, especially with thicker tube walls. If the end of the perpendicular tube member is cut flat there can be a considerable gap at the inside edges of these two outer joints that must be bridged by the welder.

 

[Vimalmechs]

Hi all, thanks for the reply.

here the Material is cold formed steel tube for structural applications.I have red lined such a way to call "2X FLARE BEVEL" for two sides and "2X FILLET" for other two sides.I think i shouldn't call all around fillet or all around flare bevel weld here.

I believe the welding will be as per the attached image after the finishing process.

In between i have found out a nice explanation of the welding of hollow structural tubing,

http://steeltubeinstitute.org/hss/faq/welding-hss-workable-flat/

Here in my organization designers wont care much about welding. They just put symbols that's it. The suppliers takes care based on their long term experience with our products. But still i want to know the details for my improvement.

Thanks , Vimal

 

[ewh]

Vimal,
As per your attachment, we also use flare-groove welds in this situation.

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

 

[BUGGAR]

"Here in my organization designers wont care much about welding. They just put symbols that's it".

May I quote this?


Thanks.

Bob

 

[ewh]

Do they use Farm Code Welding?


“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

 

[SnTMan]

Why should they be different?