This section provides an overview for line heater as well as their applications and principles. Also, please take a look at the list of 10 line heater manufacturers and their company rankings.
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A line heater is a device that heats an object to a high temperature of 1,000°C (1,832°F) or more by focusing the light from a halogen lamp in a line or band.
It is a highly efficient radiant heating source in which more than 85% of the input power is converted to infrared radiation. Since a filament with a small heat capacity (such as tungsten) is used as the heating element, the heater can quickly raise and lower the temperature without contact. Since it is a non-contact heating, it maintains a clean environment unaffected by gas emissions from the heat source and can be used in any heating atmosphere, such as air or vacuum. Despite their high output, they are compact and lightweight, so they can be installed even in confined spaces.
Compared to other heat sources, line heaters provide quick, non-contact control of temperature rise and fall. They are used in manufacturing processes for conductor devices and for partial heating of plastic and mechanical materials.
Since they can be used in environments ranging from atmospheric pressure to high vacuum, they can be used for oxide film formation and activation after ion implantation in semiconductor manufacturing. They can also be used as a heating source for thermoplastic resins (resins that can be softened and molded by heat). In automotive manufacturing, line heaters are also used in the thermoforming of steel sheets used to make automobile parts (e.g., chassis).
Line heaters are device that heat using infrared light emitted from a halogen lamp.
Halogen lamps are lamps to which a small amount of halogen gas (e.g., bromine or iodine) is added in addition to nitrogen or argon inside the bulb. A filament of tungsten or other material is inserted inside the halogen lamp, and the filament emits light when an electric current is applied to it.
Tungsten atoms evaporate from the filament, and by filling it with halogen gas, the tungsten atoms and gas combine to form tungsten halide. The formed tungsten halide dissociates into halogen and tungsten atoms again in the vicinity of the filament, creating a cycle that enables steady operation.
The infrared light emitted from the filament is converted to focused or collimated light using mirrors and irradiated onto the object. This is used as line heater. Since the filament temperature can be heated to 1,000°C or higher, non-contact heating with intense infrared light can be realized.
*Including some distributors, etc.
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Wattco was founded in 1972 and is headquartered in Lachine, Quebec. Wattco is a manufacturer of electric heating products for use in many utilities including oil and gas, renewable energy, HVAC systems, as well as others. Wattco products include immersion, circulation, inline, flanged, screw plug, pipe, over the side, industrial bore, tubular, finned tubular, strip, finned strip, cartridge, band, silicone rubber, open coil element, duct, finned tubular duct heaters, infrared radiant heaters, as well as other combinations of heaters and control panels.
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