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Silicon carbide heating elements
Quality Control Heat treatment of high-speed steel Miscellaneous swift production processes Suitable for preset thermal cycles

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.

SUPPLYING POWER TO THE RODS

Thanks to an adapted transformer used to adjust power supplying in order to offset the increased resistivity of the rods in time (ageing).

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.

SUPPLEMENTARY EQUIPMENT

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

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

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.

OPTIONS

Daily or weekly timer Temperature-time setting unit Automatic compensation for ageing of the resistors

Model	Dimension mm						Weight Kg.	Power Kw	Temp. max. °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		*

One-year warranty against manufacturing defects

Data and specifications subject to updating.