Didier Fourcot Jun 30, 2011:

Welding of a fin inside a stub? There are fins welded on stubs, for example in evaporators of heat pumps or air conditioners, but the phrase given may be parsed in multiple ways, so although a cooling fin on a stub is possible, we need more finromation to make sure.
Look at what I am thinking, of:
http://www.inductothermgroup.com/Home/System-Process/Special...
http://www.goencompass.com/hrsg.htm

Tony M Jun 30, 2011:

Abbreviations Do you have any strong reason to believe that both fin. and weld. are in fact abbreviations?

'weld' might be a noun: 'the weld that fixes the fin'; or it might be a telegraphic instruction for the procedure of 'welding the fin'

'stub' usually means a short piece of something, sometimes fixed at one end only. Fixture might be the compon,ent that is used to fix (attach, mount) it; or it might be a fixing component in the form of a stub.

Note that in automotive contexts, we also have 'stub axles' — I don't know if this is perhaps part of the train drive system, and if so, if these too might have 'stub axles'?

If that were the case, this could be the fin welded on the inside of the part used to fix the stub.

As you see, with so little context to work from, it's pretty impossible to decide!

Tony M Jun 30, 2011:

Context Pretty impossible to help you much with these extremely general terms — you really need to try and find a picture of this element, which should resolve the ambiguity for you.

A 'fin' is often a flattish strip of something which might be welded 'edge-on' along something else, usually for the purpose of stiffening some thinner sheet material — though of course it all depends on the relative scale of all this.

Here is an example of a sheet-metal structure that has two stiffening fins added to it — in this case, they appear to be rivetted on, but they might equally well have been welded.

http://www.rv7-a.com/134_3436.jpg

Andrew Vdovin (asker) Jun 30, 2011:

Could it be "fixture for final welding inside stub sills (draft sills)"?
I'm pretty sure about the "stub" element, but the "fin" part still seems obscure...