[modeleng] Re: steel boilers & Cu flues

On 9/17/07 4:43 PM, "Harry Wade" <hww@xxxxxxxx> wrote:

> However as with so may other things, the quality of the first installation
> job has a lot to do with how well the joint seal holds up.

Cheerfully chiming in never having actually had to do it - :)

I would assume that this would be a case where the finish of the tubeplate
holes is far more important than it would be if brazing the tubes in -
arguably the opposite, where one might like to have a slightly rough surface
to facilitate wicking of the solder, but for the rolled tube I would assume
a very smooth (and very round) surface would be preferable.

As I say, however, I don't know - so I'd be interested in hearing the
truth of the matter from anyone that actually knows.

Is there a requirement for thicker tubeplates when rolling? Or narrower?

Curiously

Tim
-- 
Tim Kirby                   trk@xxxxxxxxxx


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