Application of Magnetic Material in Magneto Suction Cupule of Crane

In order to realize safety, saving energy and material in the design and manufacture of the magneto suction cupule of crane, This text discussed how to select the permanent magnetic material and soft magnetic material, how to design the magnetic circuit and the method of magnetization and demagnetization and so on. It is emphasized on the structure of magneto suction cupule of crane made of AlNiCo and NdFeB permanent magnetic material or the combination of the two kinds of material, the application of RLC circuit in magnetizing and demagnetizing with pulse current to realize the light weight and low cost for the magneto suction cupule of crane.