Mechanically welded tolerances

Hello everyone,

 

I wanted to know what the standard was for such a chassis (dimensions).

 

I found several standards:

 

- NF E 86-050 : Apparently no longer used

- ISO 13920: For flow rates?

- 5817...

 

For a chassis like this one http://www.alpes-tolerie.com/wp-content/uploads/2014/01/IMG_3328.jpg

 

Thank you

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Hello, for this kind of structure, you can use NF A 45

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NF A 45 is the standard that concerns the tubes themselves, right?

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Yes, absolutely

 

Maybe I misunderstood the question =)

 

Hello

 

Is it NF E 86-040?

 

http://www2.afnor.org/espace_normalisation/structure.aspx?commid=3537&lang=french

 

In any case, your chassis is beautiful. You don't see much of the welds.

 

S.B

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  • Machined parts: ISO 2768 mk thread 6H-6g

  • Folded cut parts: NF E02-352

  • Mechanically welded parts: NF E 86-050

  • Foundry parts in metals and non-ferrous alloys: NF A 66-001

  • Aluminium or zinc alloy castings: NF A 66-002

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Hello!

In the  GDI: Welding standard: NF EN 22553- ISO 2553 .

 

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Hello

 

1436 results on the AFNOR website In the category standard for "welded" search, you should find what you are looking for!

 

http://www.boutique.afnor.org/recherche/resultats/mot/soude/categorie/normes

 

More seriously, in the GDI for welded assemblies, they talk about 2 standards:

 

NF EN ISO 2553:

http://www.boutique.afnor.org/norme/nf-en-iso-2553/soudage-et-techniques-connexes-representations-symboliques-sur-les-dessins-joints-soudes-et-brases/article/654673/fa166231

 

NF EN ISO 4063:

http://www.boutique.afnor.org/norme/nf-en-iso-4063/soudage-et-techniques-connexes-nomenclature-et-numerotation-des-procedes/article/721315/fa166253

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NF E 86-050: Impossible to find for purchase?!  

ISO 2553: Concerns weld design

 

NF E 86-040: Perhaps?

 

http://www.boutique.afnor.org/norme/nf-e86-040/appareils-chaudronnes-non-soumis-a-pression-tolerances-geometriques-et-dimensionnelles/article/722714/fa032481

 

 

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@flegendre

  • Mechanically welded parts: NF E 86-050

  • Foundry parts in metals and non-ferrous alloys: NF A 66-001

  • Aluminium or zinc alloy castings: NF A 66-002

 

Are you sure they are still relevant?

 

For me, a standard that is not in the Afnor shop had to be revised.

 

S.B

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I stole this from the workshop manager, it may help you!!


normes_en_soudage.pdf

Unfortunately, I don't think there are tolerances in this document.

 

It seems that it is impossible to find!

Hello

 

Personally, I use ISO 13920 (it applies well to welded structures and not only to flow rates).

At a minimum, specify the dimensional tolerance class. Shape tolerances are optional.


iso13920.jpg
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Hello

 

At home, we put this block and our suppliers have not given us negative feedback!!

 

if it can help

 

 

 

 

 


bloc_mecano.png
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Hello BATCH123,

 

I make a lot of welded structures in my trade, and the standard I use is ISO 13920 because it gives the tolerances of your welded mechanic. There is no standard that defines flow tolerances except the one that must be used for profile dealers (and even then not even sure). This standard is even used for the design and construction of transport frames for containers of radioactive material, and they are very picky on the subject :)

 

Have a nice day.

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@dpusel

 

Your block is good, but it is used to define the standards that the materials used must meet according to the type of profile, it concerns the material supply, but it is not used for manufacturing, the boilermaker in the workshop will not know which tolerances to apply. It's like in machining, you need a standard with tolerance classes.

 

Have a nice day.

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Hi everyone

After designing the mechanically welded chassis, do we go to ISO 2768-mK for the drilling?
Or do we stay with the one used to make the welded structure?

Hello

Unless I'm mistaken, everything that is used in post-weld machining of the structure is well managed by ISO 2768

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A little late but here is what we indicate in our cartridges


So OKfor 13920 but indeed if there are retouches in machining the 2768 will apply

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