pdp1@EARTHLINK.NET on mon 12 jul 04
Hi *rnold,
Sorry, I lost some letters on my keybord oweing to little
spill...I w*s h*ving bottle of Beer ( seldom thing for me)
& with h*rdly * sip even t*ken yet, I bumped it & it sloshed
little blop on to the keybo*rd...oh well...but *nyw*y..
Why do you suppose we do not see Kilns which employ 'Rods'
insted of coiled Wire for the he*ting elements?
Phil
el ve
----- Original Message -----
From: "Arnold Howard"
> What wears elements is firing to a temperature that the
kiln can barely
> reach. The easier the kiln can reach the maturity
temperature, the longer
> the elements will last.
>
> I don't think a slow cooling will affect element life
much.
>
> Sincerely,
>
> Arnold Howard
pdp1@EARTHLINK.NET on wed 14 jul 04
Hi Lee,
Ooooo...hmmm...
Thank you - it is interesting to me.
Thank you also others as wrote in on this.
Some of my thought, was that a thicker element, having
greater cross-section, would resist erosion or resist
exterior induced chemical decomposition
longer, or, of course, depending in it's composition
anyway...or may be able to enjoy more rapid rises in
heat-giving, or have other useful properties.
So, it seems, that the prominance of coiled Ni-Chrome is
oweing to it's being cheap and already verstile, a
'standard' off-the-shelf Industrial product, is common
and available, and not that it is an intentional choice
per-se of
Material or as form of Material for the dedicated task of
electric Kilns...
I would guess that were the various Electric Kiln
Manufacturers to co-operate with one-another, they could
develop and have made for them, those kinds of 'rods' as
would be suited to the tasks of hi-fire, in various
atmospheres, and at little more cost than the Ni-Chrome
arrangement...
If Transformers were needed, the additionl cost would
certainly be considered in respect to the anticipted gains
in the Working life of the Heating Element rods...and may be
well worth it for some applictions or contexts.
Just museing...
Phil
el ve
----- Original Message -----
From: "Lee Love"
> pdp1@EARTHLINK.NET wrote:
>
> >Why do you suppose we do not see Kilns which employ
'Rods'
> >insted of coiled Wire for the he*ting elements?
> >
> >
> Phil, they use them here in Japan (they have both
kinds. The kinds
> with the charcoal reduction boxes have the thick
elements.) I am
> guessing the primary reason we don't use them in the
States is because
> they are much more expensive.
>
> --
> Lee in Mashiko, Japan
Lee Love on thu 15 jul 04
pdp1@EARTHLINK.NET wrote:
>Why do you suppose we do not see Kilns which employ 'Rods'
>insted of coiled Wire for the he*ting elements?
>
>
Phil, they use them here in Japan (they have both kinds. The kinds
with the charcoal reduction boxes have the thick elements.) I am
guessing the primary reason we don't use them in the States is because
they are much more expensive.
--
Lee in Mashiko, Japan http://mashiko.org
http://journals.fotki.com/togeika/Mashiko/ Commentary On Pottery
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