Weld Symbol Interpretation 2

[WPM3022]

Hello Forum.

I have an old (circa 1980) German drawing showing this weld symbol.

Drawing doesn't nominate a standard - however would almost certainly be a DIN standard.

From what I can tell - Double V butt weld, all around the periphery, has to have full NDT (x-ray, or more contemporarily, Ultra sonic testing).

What I am unsure about is the line accross the top of the V symbol, or the circle on top of the line - perhaps surface finish requirements??

Any help greatly appreciated.

 

[dhengr]

WPM3022:
I think you are about right. I think it shows a double bevel from both sides, a full penetration weld, all around. Then, the flat line on top with the half circle above means weld full, plus a reinforcement, and then grind flat. Finally, X-Ray NDT the weld. I’ve always shown the reinforcement as a flatter portion on a semi-circle over the filled vee weld. Then, I’ve noted the grind smooth, both sides, as a note in the tail of the weld symbol. You might also add a note to back-gouge to sound weld metal on the second side, then complete the weld.

 

[kingnero]

both symbols are mutually exclusive: either grind flat or reinforcement. Unless, as dhengr noted, it was implied to grind flat the reinforcement (to avoid undercuts, ...). But those kind of weld defects should automatically be rejected if present, so the symbol doesn't really make sense. Weird, as Germans are often very precise and correct.

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[RolMec]

This comes from crane manufacture, the additional symbol refers to the execution of the welding as well as to subsequent machining, pls. see attachment.
(standard is DIN 15018, timeframe 70ies to 80ies)

Roland Heilmann
Lpz FRG

 

[kingnero]

*eating humble pie here*

http://www.fusionpoint.be

http://be.linkedin.com/in/fusionpoint

 

[RolMec]

;-) no need at all, this is stuff from the previous millenium...

Roland Heilmann
Lpz FRG

 

[WPM3022]

Thanks @ kingnero and @RolMec and @dhengr

Much appreciated.

I have since obtained a copy of DIN standard, not sure if i can post the whole document here?

 

[Ron]

WPM 3022....the DIN standards are copyright protected so can't post here.