Zhermack FURNACE DM 30, User Manual

Page: 167 / 272

FURNACE DM
167 of 272
MAINTENANCE AND USE MANUAL
EN
It may be necessary to fire more than one cylinder containing the same or different linings
simultaneously, but at different temperatures (e.g. 3 C & B resin cylinders at 700°C, 2 ceramic alloys
cylinders at 850°C).
In this situation, we believe that the best way to proceed is to enter the melting data by occupying
two programs. Example:
The above-described data is purely indicative and does not refer to any particular fusion lining
available on the market. The numbers of phases used in Program n°1 may also vary
depending on technical needs.
The above is simply designed to illustrate a method that is both possible and at the same time secure,
simple and extremely practical.
The validity of this system lies in the fact that, after the 30-second buzzer informs the operator of the
end of Phase 5/Program n°1, the in-chamber temperature of 700°C is stabilised until fusion operations
for the first 3 C & B resin alloy cylinders are complete.
Afterwards, to exit Program n°1 and start Program n°2 to raise the temperature to 850°C,
proceed as follows:
A. press START-STOP (20); OFF reappears on the display (11).
B. press PROG. SELECT. (12); “P” appears on the display (14).
C. press n°2 on the numerical keypad; the number 2 appears on the display (14).
D. press PHASE; F appears on the display (15).
E. press n°2 on the numerical keypad; the number 2 appears on the display (15).
F. press START-STOP (20) again and the oven will immediately recommence working and
proceed towards 850°C.
7.10
NOTES ON LINING FUSION SYSTEM
PROGRAM N°. 1
T
emperaTure
i
nCreaSe raTe
h
olding Time
Phase 2 • • •
Phase 3 • • •
Phase 4 250 °C 6 °C/min 20 minutes
Phase 5 700 °C 10 °C/min 30 minutes
•
Completely data-free.
PROGRAM N°. 2
T
emperaTure
i
nCreaSe raTe
h
olding Time
Phase 2 • • •
Phase 3 • • •
Phase 4
• • •
Phase 5 850 °C 10 °C/min 1 hour
•
Completely data-free.