permanent ferrite magnet

The manufacturing process of rubber magnets is much the same as other products. In the design of the formula, the first to determine the species of magnetic powder, particle size and dosage. Next should be determined according to the requirements of the use of rubber, such as wear-resistant medicine selection of natural rubber. In the process, before or after vulcanization needs to be added to other products do not have the magnetization process, in order to give the product permanent magnetism. The advantage of magnetization before vulcanization is that the direction of the external magnetic field remains unchanged, through the rubber network is more smooth; after vulcanization magnetization through the poorer, but the operation is more convenient. In short, each has its own advantages and disadvantages. Rubber magnets, also known as bonded permanent ferrite magnet , are made of bonded ferrite powder, rubber or plastic and other materials, through extrusion, calendering or injection molding. Due to the high plasticity of the material itself, the finished or semi-finished products can be cut, perforated, longitudinally cut and mounted on other materials at will, and is not easy to demagnetize, has a good corrosion resistance, is mainly divided into two major categories of Isotropic Rubber Magnets and anisotropic rubber magnets. The difference is as follows: 1. Different magnetic properties: Isotropic rubber magnetism is weaker, while anisotropic rubber magnetism has a higher magnetic function. 2. Different working temperature and density, the density and temperature of the Isotropic rubber magnet are lower than that of the anisotropic rubber magnet. 3. Different application areas: the Isotropic rubber magnet is mainly used in refrigerator magnets, car stickers, printing products, and promotional items. And anisotropic rubber magnets, a large number of applications in micro-motors, computers, laser printers, copiers, magnetic toys and other areas of the preparation process of rubber magnets.