A low voltage cartridge heater is typically made in a similar way to a standard cartridge heater, but with some key differences to accommodate the lower voltage.
Here is a general overview of the manufacturing process for a low voltage cartridge heater:
Selection of materials: The first step is to select the materials for the heating element and the cartridge. The heating element is usually made of a resistance wire, such as nickel-chromium or Kanthal, while the cartridge is typically made of stainless steel.
Coil winding: The resistance wire is wound into a coil, which is then inserted into the cartridge. The number of turns and the wire gauge are carefully calculated to achieve the desired resistance and heat output.
End termination: The ends of the coil are connected to lead wires, which are usually made of nickel or copper. The lead wires are then inserted into the ends of the cartridge and securely crimped or welded in place.
Electrical insulation: To prevent the coil from short-circuiting against the metal cartridge, the coil is insulated with high-temperature insulation material, such as ceramic, mica, or fiberglass. The insulation material is inserted into the cartridge around the coil, leaving a small air gap between the insulation and the cartridge.
Sealing: The ends of the cartridge are sealed with epoxy or another high-temperature adhesive to prevent moisture or contaminants from entering the cartridge and to provide additional electrical insulation.
Testing: The finished cartridge heater is tested to ensure that it meets the desired specifications for resistance, voltage, wattage, and temperature.
In general, the manufacturing process for a low voltage cartridge heater is similar to that of a standard cartridge heater, but with adjustments made to the design and materials to accommodate the lower voltage and achieve the desired performance characteristics.
