AUTOMATIC SETTING
Through a P.I.D. potentiometric pyrometer linked to a Pt.PtRh thermocouple set inside the
muffle and protected by a ceramic covering.
GENERAL SPECIFICATIONS
The furnaces belonging to this group are built starting from the floor and consist mainly of
two parts:
-- The external muffle is separate from the steelwork
-- The external steelwork
OPTIONS
-- Daily or weekly timer
-- Temperature-time setting unit
-- Automatic compensation for ageing of the resistors
THERMOELECTRIC EQUIPMENT
It consists of silite rods used with low surface load for lower ageing and improved constant
temperature of the muffle. The silite rods are laid transversally to the chamber, on the
furnace crown under the hearth. The incandescent part corresponds to the width of the
muffle. The terminal metal ends protruding from the two sides of the furnace are connected
through special clamps devised to prevent overheating. A natural draught cools the
connections. The number of silite rods used to make a thermoelectric equipment vary
according to the type of furnace and to the maximum temperature achievable.
Used to check machine load and the wearing away of the rods.
Silicon carbide resistor furnaces are devised to carry out high temperature treatments in
perfect safety. Such safety features are the result of great attention to the following:
- Accurate choice of the materials used
- Wide and progressive insulation
- Separation of the muffle from the external steelwork
- The use of low surface load resistors
DOOR
Quick sliding opening device through a lever set by the furnace. Upon opening the door, a
microchip disconnects the heating elements.
TREATMENT CHAMBER
It is made of refractory silica alumina with heat and thermal shock resistant silicon
carbide hearth.
THERMAL INSULATION
With separate refractories characterized by separate thermal conductivity.
SPECIAL FUNCTIONS
Screened muffle when the substances treated may damage the silite rods. The top temperature
is dropped by 100 °C during the screened function. INERT OR REDUCING ATMOSPHERES.
Model | Dimensions mm | Weight | Power | Max temperature °C | Tension | ||||||
a | h | b | A | H | B | Mono. | Tri. | ||||
SF 4 | 150 | 100 | 250 | 570 | 1620 | 810 | 150 | 4 | 1400 | * | * |
SF 6 | 180 | 120 | 300 | 570 | 1620 | 810 | 200 | 6,5 | 1400 | * | * |
SF 10 | 200 | 150 | 350 | 700 | 1620 | 860 | 400 | 8,5 | 1400 | * | |
SF 16 | 200 | 180 | 400 | 910 | 1960 | 1110 | 600 | 14 | 1400 | * | |
SF 25 | 250 | 200 | 500 | 910 | 1960 | 1110 | 800 | 16 | 1400 | * | |
SF 40 | 400 | 400 | 600 | 1110 | 1960 | 1210 | 1000 | 38 | 1400 | * |