Linda Arbuckle on fri 21 may 99
Here's a post I dug up from Tom Buck about element life. I think one
reason people do 5-6 instead of 8-10 for oxidation is that there is not
a great deal of benefit from going higher (adequate bodies can be made
at 5-6, colorants are less likely to burn out at 5-6 than 8-10, and in
oxidation there isn't any color benefit from going higher), and it
shortens element life.
--
Linda Arbuckle
Graduate Coordinator, Assoc. Prof.
University of Florida Dept. Of Art
P.O. Box 115801
Gainesville, FL 32611-5801
arbuck@ufl.edu
(352) 392-0201 x 219
__________________
> Date: Wed, 19 Feb 1997 10:04:06 EST
> From: Tom Buck
> Subject: Re: firing schedules to enhance element life
>
> ----------------------------Original message----------------------------
> Since there have been several questions relating to element life, perhaps
> this quote from the developer of Kanthal alloys is appropriate:
>
> Life of KANTHAL alloys
>
> "The life of a resistance material is directly dependent on service conditions
> "For practical reasons the manufacturer of resistance materials must,
> "The test wire has a diameter of 0.0285" (0.72mm). The necessary curre
>
> The results of this testing are then displayed in a graph. For Kanthal A1 allo
>
> Cheers Tom.Buck@freenet.hamilton.on.ca
> Hamilton, Ontario, Canada
>
I charted Tom's info:
> Temperature Cone (small cones) Element life (# of firings)
> 2100 F 02-01 800
> 2192 F 3-4 360
> 2280 F 6 200
> 2370 F 8 110
> 2460 F 12 80
> 2500 F est. 14-15 60
>
>
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