Radiant Heaters

Radiant Heaters (Bundle Rod Heaters)

Bundle rod heaters, also known as radiant heaters, are designed for high-temperature furnace applications, providing efficient and uniform heating.

Applications

Metallurgical Furnaces:

Used in aluminium holding and melting furnaces.

Steel Industry:

Applicable in galvanizing furnaces

Automotive Industry:

Employed in heat treatment furnaces.

Heat Treatment Processes:

Suitable for annealing and carburizing furnaces.

Technical Specifications

Power Rating:

Available from 1 kW to 75 kW, customizable to meet specific process requirements.

Operating Temperature:

Capable of reaching temperatures up to 1250 °C, depending on the heating element material.

Heating Element Materials:

Ferritic Alloys (FeCrAl): Suitable for temperatures up to 1250 °C.

Nickel-Chromium Alloys (NiCr 80/20):Suitable for temperatures up to 1100 °C.

Watt Density:

Ranges from 1 to 10 W/cm², allowing for efficient heat distribution.

Voltage Options:

Typically available in 240 V or 480 V AC, with configurations for single-phase or three-phase power supplies.

Dimensions

Diameter: Standard sizes range from 68 mm to 170 mm.

Length: Customizable to fit specific furnace designs and requirements

Construction Components:

Ceramic Discs: High-purity alumina discs hold the heating elements in place, ensuring electrical insulation and structural integrity.

Fiber Discs: Ceramic fibre discs support terminal and centre rods, preventing heat loss.

Centre and Terminal Rods: Typically made from stainless steel (SS 310) or Incoloy, providing mechanical support and electrical connections.

Radiant Tubes:

Often used in conjunction with radiant tubes made from materials like stainless steel (SS grades), Incoloy or cast alloys, with thicknesses ranging from 1.5 mm to 8 mm and lengths from 300 mm to 5000 mm.

Advantages

High Efficiency:

Delivers strong heating capabilities with high watt density output.

Durability:

Designed for long life and maintenance-free operation, even in high-temperature environments.

Flexibility:

Can be mounted horizontally or vertically, accommodating various furnace designs.

Environmental Impact:

Reduces CO₂ emissions by eliminating flue gases, contributing to a cleaner operation.