Classification of motor winding coils
Classification of motor windings is a very interesting thing. Different classification methods can produce different effects on the same thing; of course, the winding of the motor is no exception. Ms. Participate in a simple exchange with everyone today.
1 A method of classifying motor windings
The motor winding coil can be divided into two types: forming and winding. The forming coil refers to a fixed-shaped coil pressed by a molding device. After the coil is pressed, the inherent characteristics such as shape, size and pitch cannot be changed. The scattered coil refers to the coil wound by the winding mold, and the shape and size of the wire can be greatly adjusted according to the actual situation on site.
Generally, the forming coil is applied to the winding of the large and medium-sized motor, and the insulation strength is better than that of the scattered coil. This is mainly due to the particularity of the electromagnetic wire.
In general, most of the motor windings with a center height of 315 or less use a wound coil. Due to the limitation of the diameter and length of the core, the internal space is relatively narrow. The use of a loose coil facilitates the end shaping after the welt, but its The slot full rate is relatively low, so the loss is large and the power is low.
Under the premise of insulation of each wire, the forming coil will be coated with one or more layers of insulation after being formed, and the size is not easily changed after molding using a molding machine.
The wound coil is more suitable for mass production, and the forming coil is affected by the forming machine, and the daily output will be smaller.
2 enameled wire brief introduction
At present, the number of manufacturers of enameled wire in China has exceeded 1,000, and the annual production capacity has exceeded 300,000 tons. But in general, the condition of China's enameled wire is a low level of repetition. In general, it is "high output, low grade, and backward equipment." Under this circumstance, high-grade enameled wire for high-quality home appliances still needs to be imported, let alone participate in international market competition. Therefore, we should redouble our efforts to change the status quo, so that China's enameled wire technology level can keep up with market demand and squeeze into the international market.
The enameled 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.
