[modeleng] Re: TIG welded copper boilers

No, I agree with you AJ, a miniature boiler is a pretty complex thing 
and a few test welds would not show the true potential of an ametreur 
welder. While silver soldering has come in for some (justified) 
criticism it does make allowance for the 'idiot factor'
Alan Stepney wrote:
> I am glad to see that the Southern Fed (and I assume other organisations) 
> are allowing newer technology.
>
> Whilst a coded welder will have plenty of experience and the training to do 
> the job properly,I am not so sure about "test pieces" etc. either for steel 
> or for TIG welding.
>  I hope that any such pieces will be examined carefully, and that the same 
> will apply to the entire boiler.
>
> We have an excellent record regarding boilers and their failure, or lack of, 
> and I would hate to see that change.
>
> Alan
>
> ----- Original Message ----- 
> From: "Craig Gluyas" <craig@xxxxxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Saturday, October 25, 2008 8:23 AM
> Subject: [modeleng] Re: TIG welded copper boilers
>
>
> Hi All
>
> The guidelines for Tig welded copper boilers are already in the boiler
> testing guide for the southern fed. It is simply treated as a silver
> soldered boiler. The only difference being the need for either a coded
> welder with documentation, OR for a test piece to be available for
> examination to prove the welders competence (which is exactly the same as
> for steel boilers) I.e. you do not have to be a coded welder to manufacture
> one, just a competent welder.
>
> Tig welding is a very accurate and precise form of welding, well suited to
> this kind of work. The only limitation I can see is getting the torch into
> some of the tighter areas! It does save heating the whole boiler up for
> silver soldering and then also the pickling process.
>
> As a club boiler inspector with experience in designing and manufacturing
> pressure vessels in both steel and stainless steel (usually TIG welded
> construction) I'm very glad to see the technology being utilized and
> accepted in the hobby.
>
> Regards
>
> Craig
>
> -----Original Message-----
> From: modeleng-bounce@xxxxxxxxxxxxx [mailto:modeleng-bounce@xxxxxxxxxxxxx]
> On Behalf Of R.L. Roebuck
> Sent: 24 October 2008 23:37
> To: modeleng@xxxxxxxxxxxxx
> Subject: [modeleng] Re: TIG welded copper boilers
>
> Hi there Alan,
>
> I'd be curious to know what the Southern (or Northern) Federations view
> point is - will they issue boiler certificates for them, and will the
> testing still be one hydraulic test every four years?
>
>
> Yours,
>
>
> Rich.
>
>
> On Fri, 24 Oct 2008, Alan Stepney wrote:
>
>   
>> I see that Maxitrak have started selling TIG welded copper boilers.
>>
>> Anyone have any thoughts on that, instead of the usual silver soldering?
>>
>>
>> Alan
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