Ants Ceramics Private Limited

Laboratory Tube Furnace (750°C – 1200°C)

For laboratory processes requiring the use of a tube furnace, Ants offers a variety of tube
diameters and lengths to meet most heat processing requirements.

Furnace design: The design of furnace body makes use of double skin construction that allows natural air convection to maintain a cool outer case for maximum operating safety and comfort. All models are supplied horizontally as standard, but vertical options are also available.

Furnace work tube: This range of furnaces has a maximum operating temperature of 1200°C. For operation at 1200°C work tube of 80% Alumina is recommended. For operation at 1100oC or less either 80% Alumina or fused quartz work tube is recom-mended.

Furnace heating technology: Heating is provided by all surrounding free radiating elements manufac-tured from original Swedish Kanthal high temperature resistance wire spirals supported on recrystallized Alumina tubes for optimum uniformity. Free radiating elements provide option of fast heating the furnace upto 20oC/min.

In horizontal tube furnaces heating elements are not wound on work tube. This configuration allows easy replacement of work tube and higher continuous working temperature. Since the heated sample does not face the radiation directly from heating element, sample temperature is upto 20oC less than thermocouple temperature which shows temperature outside work tube.

In vertical tube furnace heating is provided by a resistance wire element wound on to the ceramic work tube which is an integral part of the furnace.

Furnace insulation: Low thermal mass insulation is used throughout for rapid response rates and maximum thermal efficiency and stability. A rugged metal sheathed thermocouple is protected from accidental damage and allows full use of the work tube bore. In furnace were work tube is integral part of furnace, a separate work tube is required when furnace is used with an atmosphere or is likely to be contaminated by spillage. Tubes Insulating end plugs to minimise heat loss and thermal gradients is offered as standard:

• Over-temperature protection: This option is recommended to protect valuable contents & for unattended operation.
• Data logging and remote controlled controllers: A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232, RS485.

 

Optional fittings include:.

• A wide range of tubes
• Gas tight end fittings for work in controlled atmospheres
• For increased uniform temperature zone length, three zone versions are available
• Vacuum pump and related accessories
• R-Type thermocouple – this option upgrades the standard K Type (mineral insulated inside Inconel sheath) thermocouple to R-Type thermocouple and is recommended if furnaces is going to be used continuously at 1200°C.
• Over-temperature protection – This option is recommended to protect valuable contents & for unattended operation.
• Data logging and remote controlled controllers – A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232 and RS485.