The standard is for outdoor and indoor LED display, according to the area of ​​use, the area of ​​the display screen and the illumination of the surrounding environment of the screen, the corresponding limit requirements and measurement methods are specified, which fills the current domestic standards in the field of “light pollutionâ€. The blank has certain guiding significance for the production, installation and operation of LED screens.
The implementation of this standard will provide a scientific basis for the installation and commissioning of LED displays in public places in Shanghai, and provide technical support for limiting the excessive “light pollution†of LED displays in operation, thus changing many current LED display operating units. Blindly pursuing the status quo of "eye-catching" effect, creating a more comfortable living environment for the public.
The standard was drafted by Shanghai Quality Inspection Institute, Shanghai Information System Quality Technology Association, Shanghai Rongjing Affairs Center and other related units.
The single groove blanking process of motor blanking is a kind of blanking process relative to double blanking. Motor fixed, Rotor Core punching using single groove punching process, its mold design, manufacturing are relatively simple, suitable for small batch, variety of production, has the characteristics of low cost, fast change. With the development of advanced punching machine, production efficiency continues to improve, the single punching process is also developing rapidly. For the large motor, because of the cost of the duplex die and the equipment capacity, the single groove is also used. Another advantage of single groove punching is the consistency of groove size. Compound die is the same punch, stator or rotor groove completed at one time. How many slots correspond to the same number of punches, punch size to achieve complete has always been some difficulties: single slot punching is by the same punch to complete all the slots, groove consistency is better.
Stator and rotor laminations are an important part of motors and generators. For large-size and small-batch punching sheets, we usually use the notching method to produce them. The advantages of notching are that the cost of the notching die is low and the production cycle of the notching die is short. It is suitable for producing large size laminations, usually the outer diameter is from 500mm-1250mm. The slot size is more accurate than Laser Cutting.
Stator And Rotor Lamination By Single Notching,Stator Core Laminations,Generator Stator Laminations,Electric Motor Rotor Laminations
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