[modeleng] Re: TIG welded copper boilers

Great to see some list activity folks. An excellent topic too.

Cheers Jeff Dayman


>From: "Barrie Purslow" <bpduo@xxxxxxxxxxxxx>
>Reply-To: modeleng@xxxxxxxxxxxxx
>To: <modeleng@xxxxxxxxxxxxx>
>Subject: [modeleng] Re: TIG welded copper boilers
>Date: Sat, 25 Oct 2008 14:57:10 +0100
>
>
>Tel,
>
>You must be younger than I thought.
>
>When I was a young apprentice at one of our country's foremost engineering
>companies (Metropolitan Vickers), I recall spending some time in the
>Fabrication Dept. where all types of welding were carried out, some of it
>for Nuclear Plant. When I asked if copper could be welded I was told that 
>it
>was impossible and always would be! I think the "reasoning" was that the
>thermal conductivity of copper was such that heat was conducted away from
>the welding site so rapidly that it was not possible to obtain sufficiently
>high temperatures.
>
>But, times change, the huge Metrovic's site has been bulldozed, and 
>fullsize
>steam locos have their copper fireboxes repaired by welding.
>
>Regards,
>
>Barrie
>
>
> > Yep Barrie, one of the things they taught us in tech way back then, was
> > that copper is one of the few 100% weldable metals
> > Barrie Purslow wrote:
> >> Alan,
> >>
> >> Several years ago a TIG welded copper boiler turned up at the Urmston
> >> club.
> >> It had been made by one of the leading boiler makers in the U.K. who 
>was
> >> producing all their boilers by this technique - can't remember their 
>name
> >> at
> >> the moment. The club boiler inspector did some tests on the boiler and 
>on
> >> a
> >> sample piece of weld. The conclusion was that the weld was as strong as
> >> the
> >> parent metal.
> >>
> >> Barrie
> >>
> >>
> >> ----- Original Message -----
> >> From: "Alan Stepney" <alan@xxxxxxxxxxxxxxxx>
> >> To: <modeleng@xxxxxxxxxxxxx>
> >> Sent: Friday, October 24, 2008 10:09 PM
> >> Subject: [modeleng] TIG welded copper boilers
> >>
> >>
> >>
> >>> I see that Maxitrak have started selling TIG welded copper boilers.
> >>>
> >>> Anyone have any thoughts on that, instead of the usual silver 
>soldering?
> >>>
> >>>
> >>> Alan
> >>> MODEL ENGINEERING DISCUSSION LIST.
> >>>
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> >>>
> >>>
> >>
> >> MODEL ENGINEERING DISCUSSION LIST.
> >>
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> >
> > MODEL ENGINEERING DISCUSSION LIST.
> >
> > To UNSUBSCRIBE from this list, send a blank email to,
> > modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the 
>subject
> > line.
> >
>
>MODEL ENGINEERING DISCUSSION LIST.
>
>To UNSUBSCRIBE from this list, send a blank email to,
>modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject 
>line.


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