[modeleng] Re: TIG welded copper boilers

Yes very interesting you live and learn
Kenny
----- Original Message ----- 
From: "Jeff D" <jeffdayman@xxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Saturday, October 25, 2008 4:53 PM
Subject: [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.
>
>
> 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.

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