Tack Weld a Nut
Tack Weld a Nut
(OP)
How should you indicate (callout) a Tack Weld for a Nut on a Drawing with Symbol & Verbage? Thanks for any Help.
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RE: Tack Weld a Nut
If you are not familiar with weld documentation, you might want to look at the following:
http://www.unified-eng.com/scitech/weld/weld.html
And you should probably invest in a standard, such as ANSI/AWS A2.4, Symbols for Welding and Nondestructive Testing.
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RE: Tack Weld a Nut
Look at your design specs to determine what type of weld is required.
Chris
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RE: Tack Weld a Nut
KENAT, probably the least qualified checker you'll ever meet...
RE: Tack Weld a Nut
As the other guys said, "tack weld " is a shop term for temporary welds to hold pieces together before making the primary weld.
Welding nuts over a clearance hole to make cheap tapped holes is good in many applications, but the weld should be defined by type, size, symbol, and whether at 2 points, 3 points or all around.
RE: Tack Weld a Nut
Putting a bead along 2 or 3 of the edges may be perceived as being like a stitch weld, rather than all around.
KENAT, probably the least qualified checker you'll ever meet...
RE: Tack Weld a Nut
RE: Tack Weld a Nut
I too have used it when I designed welded equipment for Chemical Process industry. But:
1) I didn't use a fillet symbol, just line, arrow, and words tack weld behind the fish tail. (It used to be shown in AWS 2.4 that way, but isn't there anymore.)
2) I only used it when I indeed wanted a temporary weld. If it was to be permanent, I wanted more control than that, so I specified a size.
AWS 3.0 defines tack weld as "A weld made to hold the parts of a weldment in proper alignment until the final welds are made."
Colloquial terms aside, that is it's proper definition.
RE: Tack Weld a Nut
-- MechEng2005
RE: Tack Weld a Nut
KENAT, probably the least qualified checker you'll ever meet...