How electromagnets work

Magnetic locks are widely used and are mainly applied in various types of enterprises, companies, schools, hospitals, enterprises and institutions, and are distributed in various cities in the country to ensure people's daily work and life. Magnetic lock, also called suction lock, generates a huge magnetic force when the lock body is energized. Any iron objects will be attracted when they are close to each other. Also, the size of the magnetic force is related to the contact area. The suction force generated by the iron bearing object is larger. The more full it is not easy to pull open, the magnetic force is the power of electricity into a magnetic force, the magnetic force itself is a force, then the force also has the size, the size of the magnetic force, can be designed according to need, so the magnetic lock is also a powerful limit in the setting There are 180kg, 280kg, 380kg and so on. This magnetic force, if we have enough strength, can also pull the magnetic force, that is, the magnetic lock is separated.

The design of the magnetic lock (or electromagnetic lock) is the same as that of the electromagnet, which uses the principle of electro-magnetic. When the current passes through the silicon steel plate, the electromagnetic lock will generate a strong suction force to firmly attract the adsorption iron plate to achieve the effect of locking the door. . A very small current will also make the electromagnetic lock produce a large amount of magnetic force. Effectively controlling the access control system of the electromagnetic lock power supply recognizes that the personnel are properly powered off and the electromagnetic lock loses suction to open the door. Because the electromagnetic lock has no complicated mechanical structure and the structure of the bolt, it is suitable for the access control of the escape door or the fire door. The interior is protected by a potting epoxy resin. At present, the suction strength of the electromagnetic lock is represented by LB (pounds), and the test method is static pressurization. The so-called static pressure is the electromagnetic lock gradually increases the tension on the adsorption iron plate after the power is energized. When the electromagnetic lock suction force is exceeded, the adsorption iron plate is opened momentarily. The pull force data is the tension value of the electromagnetic lock. In addition, the force of the electromagnetic lock and the adsorption iron plate must be face-to-face and linear pressure, so that the suction force of the electromagnetic lock is the largest. Adsorption iron plates may be magnetized for a short period of time because of the magnetic induction of the electromagnet for a long time.

The advantages of magnetic lock, magnetic lock in the escape, very convenient, can be opened before the power cable, magnetic lock is very power saving, energy saving and environmental protection preferred, simple installation, easy to use.

The disadvantage of magnetic locks is that the magnetic lock is expensive in terms of price. The magnetic lock is limited by the magnetic force. In the case of exceeding the load of the lock body, the lock can be opened. This is the disadvantage of the magnetic lock. The magnetic lock can only be used. Open in one of the directions, limited by the installation location.

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