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Solving the problem of dimming of optical instruments with electromagnet

Author:admin   AddTime:2021-11-12

Electromagnet is a kind of high-performance parts, widely used in transportation equipment, automobiles and medical equipment. With the continuous advancement of society, electromagnets have begun to be widely used in security equipment, including three rolling shutters, access control series, and a new type of application for camera monitoring equipment that was popular a few years ago, that is, the electromagnet used for dimming light cutters. iron.

Optical instruments mainly use laser or other light to quickly image objects, and then form a spectrum for product classification or selection. Among them, performance components are required to perform lighting on and off, and performance components are required to be fast. Stability and service life have special requirements. Magnetic core technology has developed a small electromagnetic steel corner rotating electromagnet on the market, which can distinguish the rotation of the inner permanent magnet, and the reliability of the product has been certified by the market. The ability to rotate fast, manipulate the light and follow the development of this electromagnet has made the product continue to mature, and I believe it can make a certain contribution to future optical devices.

The electromagnet is a high-precision automation equipment performance component, which will generate a magnetic field when the electromagnetic coil is energized. Under normal circumstances, electromagnets are divided into push-pull electromagnets, suction cup electromagnets, rotary electromagnets and so on. The electromagnet is located in its electromagnetic coil. When energized, a magnetic field is generated, and the armature attracts the iron core. After cutting off the electromagnetic power supply, the armature must be released immediately and restored to the position before the attraction. However, in a general electromagnet, after the electromagnetic coil passes through, the iron core and armature will have residual magnetism. If not handled properly, it will greatly affect the function and life of the product. Therefore, several treatment solutions for residual magnetism have been proposed.




Solution 1: 1. Choose the material of the electromagnet, choose the material that is easy to conduct magnetism and demagnetization, 2. The heat treatment of the parts can improve the rust resistance and hardness of the product, and have a good treatment of the remanence of the product. Good heat treatment is expensive, and many manufacturers usually do not choose this treatment process.

Solution 2: The detailed design is reasonable, because the electromagnet needs to increase the strength of the armature and the suction surface, enough touch can increase the strength to a large extent, but the rich touch will increase the possibility of remanence, so a reasonable design has more Large remanence is very important.

ferrite sheet:https://www.goodsmaterial.com/

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