Enameled square wire is a main type of winding wire. It consists of two parts: the conductor and the insulating layer. The bare wire is annealed and softened, and then baked and baked. However, it is not easy to produce a product that meets both the standard requirements and the customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and environment. Therefore, the quality characteristics of various enameled wires are different, but they all have four properties of mechanical properties, chemical properties, electrical properties, and thermal properties.