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FURNACES with KANTHAL SUPER Heating Elements
up to 1800°C

GENERAL FEATURES & DESCRIPTION :

KANTHAL SUPER 1700, 1800 & 1900 grade Heating Elements vertically suspended in heating cavity.

Hot-face Super Refractory Mullite / Bubble Alumina insulation backed by low heat capacity refractory and fibrous insulations of different grades with fan cooling, ensure low skin temperature.

Thyristorised Circuitry with adjustable current limit and soft-start features for maximum protection to heating elements and for simple control of heat-up rate. Adjustable over-temperature cut-out with audio signal ensure overall safety.

Micro-processor based Digital PID Temperature Controller / Programmer with Thermocouple in Mullite / pure Alumina Sheath.

PERFORMANCE :

Temperature Control Accuracy within ±1°C of set point. Temperature uniformity within ±5°C near T'max with soaking. Element life of 300 to 1000 cycles derived under normal use on average. Carefully engineered for rugged use and easy maintenance.

CHAMBER type up to 1800°C :

70C 15

Floor mounting structures with front-loading heating chamber having stainless steel sheet & painted M. S. paneling. Insert type swing-aside parallel-moving Door. Base Section houses the Transformer/s & Control Panel. (Separate Control Panel for larger models). Table model for smaller sized furnaces.

APPLICATIONS :

Trial firing and P.L.C.A.R. Testing of Refractories ; Industrial R & D work ; Precision Batch firing for production of oxide & electronic ceramics and high temperature products.

CONCISE SPECIFICATIONS :

T'max	Model	Cavity Size (mm)			Hrs. to T'max	KW
T'max	Model	W	H	D	Hrs. to T'max	KW
1600°C	60C 9	150	200	300	3.0	8.0
	60C 15	200	250	300	3.0	10.0
	60C 35	250	300	450	4.5	12.0
	60C 42	300	300	450	3.5	15.0
1700°C	70C 5*	125	150	250	3.0	4.5
	70C 9	150	200	300	3.5	8.0
	70C 15	200	250	300	3.5	10.0
	70C 35	250	300	450	4.5	12.0
	70C 42	300	300	450	3.5	16.0
	70C 54	300	300	600	4.5	16.0
	70C 96	400	400	600	5.0	20.0
1800°C	80C 4*	125	150	215	3.5	5.0
	80C 14	175	250	300	4.0	10.0
	80C 38	275	300	450	5.0	16.0
'*' denotes Table models

RAISING-HEARTH [ Ind.Pat.No.149612 ] type up to 1700°C :

Platform mounted frame structure with elevated Furnace section with its opening at the bottom only, closable by vertically moving Hearth raising the job into the heating cavity by manual mechanical means. Transformer & Control Panel housed inside the frame structure. Stirrer hole through roof and Gas Inlet Pipe, optional. Eliminates hazards of top open Pit type furnace. Ideal for melting in crucible and hot working operations like Thermal Spalling Tests. Safer, surer and more convenient handling of job/charge. Reduced risk of furnace damage, cheaper and easier maintenance. No convectional heat loss during loading/unloading, so low drop of temperature and cooler ambience.

CONCISE SPECIFICATION

T'max	Model	Cavity Size (mm)		Hours to T'max	KW
T'max	Model	sq. Base	Height	Hours to T'max	KW
1600°C	60R 4	150	200	2.5	5.0
1600°C	60R 10	200	250	2.5	7.0
1700°C	70R 4	150	200	3.0	5.0
	70R 10	200	250	3.0	7.0
	70R 20	250	325	4.0	10.0

70R 4

FAST-HEATING TYPE up to 1700°C :

New generation refractory fiber insulations for efficient heat insulation, low connected load and minimal thermal loss. Two versions of T'max differ in insulations only. Built-in Transformer & Control Panel. Light-weight, compact and portable. Fast heat-up to 1600°C in 40 minutes only. Faster cooling makes possible several cycles in a day. Ideal for research scientists.

Caution :	T'max to be limited to 1600°C for non-intermittent use in 1700°C models for
	longer insulation life

CONCISE SPECIFICATION

T'max	Model	Cavity Size (mm)			KW
T'max	Model	W	H	D	KW
1600°C	60F 4	150	150	150	3.5
1600°C	60F 6	150	150	250	5.0
1700°C	70F 4	150	150	150	3.5
1700°C	70F 6	150	150	250	5.0

70F 6

TUBE (horizontal) type :

for controlled atmosphere sintering, etc. up to 100mm bore x 300mm hot zone for temperatures up to 1700°C.

Coal Ash Fusion Test up to 1550°C as per IS:1355-1959.

NOTABLE USERS OF 'OKAY' KANTHAL SUPER FURNACES :

So far, almost 250 Kanthal Super Furnaces have been supplied throughout India, the Notable Users [no. of furnaces in ( )] being :

Associated Cement Cos.Ltd., Katni & Nagpur (3) ;
Dept.of Atomic Energy: BARC/Mumbai, VECC/ Kolkata (2) ;
Bharat Heavy Elec. Ltd., Bangalore, Jagdishpur, Hyderabad (5) ;
Bharat Refractories Ltd. (4) ;
Carborundum Universal Ltd. (7) ;
Central Glass & Cer. Res.Inst., Kolkata (8) ;
Cera-Tech Industrial Ceramics, GIDC, Surat (5)
College of Ceramic Technology, Kolkata (5) ;
Def. Met. Res. Lab., Hyderabad (10) ;
Indian Aluminium Co. Ltd., R&D Cen., Belgaum (6) ;
Indian Inst. of Tech., Bombay\Guwahati\Kanpur\Kharagpur (15) ;
Maithan Ceramic Ltd.(3) ; OCL India Ltd., Rajgangpur (2) ;
Opaque Ceramics Pvt. Ltd., Himatnagar (4)
Orient Abrasives Ltd., Bhiwadi\Porbandar (3) ;
National Institute of Technology, Rourkela (3) ;
Regional Research Lab., Jorhat (3) ;
Res. & Dev. Centre for I. & S., SAIL, Ranchi (3) ;
Shri Natraj Ceramic & Chem. Ind. Ltd., Dalmiapuram\Khambhaliya (5) ;
VRW Refractories, Chennai\Ahmedabad (3).

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