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Electro Permanent Lifting Magnets Principles and Advantages

May 06,2017

Recently, with the manufacturing of many sets of large steel sheet electro permanent lifting magnets is widely introduced, but many customers still don’t know the working principles and solutions of this device. Today this article will specially introduce electro permanent lifting magnets of HVR MAG to everyone.

Unique electro permanent magnets technique uses double magnets sources system. Internal magnetic circuit distribution and conversion are controlled through the electronic control system so that the permanent magnetic field can keep the state of internal system is balanced but external system is demagnetized (that is non-magnetic clamping); or the state of the permanent magnetic field is released to the working magnetic pole surface, and external system is the magnetized state (that is clamping state). It’s also known as electronic control permanent magnet.

The conversion between the two working states of the permanent magnet spreader is achieved by applying a short current pulse to the reversible permanent magnet group therein to change its polarity, and no additional current maintenance is required during the lifting process. For this reason, the coil wound on the reversible permanent magnet group is not damaged by heat, unlike the conventional electromagnet, which is necessary for repair due to frequent electromagnetic coil damage. In addition, the permanent magnetic lifting spreader does not include mechanical parts that may be damaged, and its compact structural design ensures minimal maintenance requirements.

Unlike electromagnets, there is no need to worry about falling steel sheets due to cable failures during material handling, so there is no need to change cables as frequently as electromagnet spreaders when developing inspection procedures to achieve the purpose of taking preventive measures, which is a significant reduction in maintenance needs.

As the electro permanent magnet only needs a short current pulse (a few seconds) for the state transition in the lifting and unloading of work piece. And in the lifting process of the work piece, it does not require power supply, so its power consumption is minimal, almost zero.

Electro permanent lifting magnets used for transporting, loading and unloading does not lose the magnetic clamping when power failure. With the advantages of energy-saving, convenience and low labor costs, the electro permanent lifting magnets will replace the traditional electromagnet, hand plate permanent magnet, sling and other handling equipments, to become a good helper for new generation of manufacturing industry

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