What kind of motor is a high-quality motor?
"One price, one goods", this is a common saying we often hear, and it is also an irrefutable truth. The same is true for motor products. The quality of motors with large price differences will definitely be significantly different. Here are six aspects to explain what kind of motors are high-quality motors.
Silicon steel sheets
Silicon steel sheet is an important part of the motor, which accounts for the main cost of the motor together with copper wire. Silicon copper sheet is divided into cold rolled steel sheet and hot rolled steel sheet. The state has long advocated the abandonment of hot rolled sheet. General scale enterprises have adopted cold rolled sheet for manufacturing, and the performance of cold rolled sheet can be reflected in the brand, generally dw800, dw600, dw470, etc., ordinary asynchronous motor generally adopts dw800, and some enterprises use strip steel to manufacture motor, There are obvious differences in performance.
The stator and rotor of the motor are made of silicon steel sheet by die-casting. The length and tightness of die-casting have a lot of influence on the performance of the motor. The longer the die-casting length of the iron core is, the tighter the performance is. Some enterprises reduce costs by shortening the length of iron core or reducing the brand of silicon steel sheet, and the price of motor is low.
Copper slot fullness
The slot full rate of copper wire is the amount of copper wire used. The longer the iron core is, the more copper wire will be used. The higher the slot full rate is, the more copper wire will be used. If the copper wire is enough, the motor performance will be better. Some manufacturing enterprises reduce the stator slot shape without changing the length of the iron core, so as to reduce the amount of copper wire and reduce the cost.
Bearing is the carrier to bear the high-speed operation of motor rotor. The quality of bearing affects the running noise and heating of motor.
The shell bears the vibration and heat dissipation of the motor during operation. The heavier the shell is, the stronger the strength is. Of course, the appearance design of the shell and the appearance effect of die casting are all important factors affecting the price of the shell.
Including machining accuracy of machine parts, rotor die-casting process, assembly process, insulation dipping paint, etc., will affect the performance and quality stability of the motor. The production process of large-scale manufacturers is relatively strict and the quality is more guaranteed.
Three phase asynchronous motor is a product with very mature technology, and there are many manufacturers. However, in order to achieve excellent motor performance and stable quality, it is necessary to choose a certain scale of motor factory.