Heating coils, also known as electric heating coils or heating bands, are made of electrically heated alloy wire as the heating material and mica soft board (occasionally with a ceramic core) as the insulating material. They are primarily used in electric kettles and other electrical appliances.

Convert electrical energy into heat to warm objects. It is a form of electrical energy utilization. Compared to general fuel heating, electric heating can achieve higher temperatures (such as arc heating, which can reach over 3000℃), and it is easier to implement automatic temperature control and remote control. Car-mounted electric heating cup

The heated object can maintain a certain temperature distribution as required. Electric heating generates heat directly within the heated object, resulting in high thermal efficiency, rapid temperature rise, and the ability to achieve uniform or localized heating (including surface heating) according to the heating process requirements. It is easy to implement vacuum heating and controlled atmosphere heating. During the electric heating process, there is minimal generation of waste gases, residues, and dust, ensuring the cleanliness of the heated object and preventing environmental pollution. Therefore, electric heating is widely used in production, scientific research, and testing fields. Particularly in the manufacturing of single crystals and transistors, surface hardening of mechanical parts, smelting of iron alloys, and the production of artificial graphite, electric heating methods are employed.