Cartridge heaters are heating elements that are often used in industrial applications for heating liquids, gases, and solids. They consist of a cylindrical tube, typically made of metal, which contains a heating element.
The heating element is usually made of a resistance wire, such as nickel-chrome, which is wound around a ceramic or mica core. The core is then inserted into the tube and surrounded by a filler material, such as magnesium oxide, which helps to distribute the heat evenly.
When an electric current is passed through the resistance wire, it generates heat due to the resistance of the wire. This heat is then transferred to the tube and the surrounding filler material, which then heats up the material being heated.
Cartridge heaters can be designed to operate at different voltages and wattages depending on the application. They are often used in applications where high temperatures are required, such as in plastic molding machines, heating tanks and vats, and in the semiconductor industry.
