The state of NdFeB powder, especially the particle size distribution and particle shape have an important influence on the orientation degree of the magnet and the sintering process. The traditional methods of powder preparation are mechanical crushing and ball milling. Mechanical crushing is carried out under the protection of inert gas by jaw crushing, ball milling with sieve and other methods. Ball milling powder includes vibrating ball milling and rolling ball milling, etc. The powder prepared by vibrating ball milling is irregular in shape, which is not conducive to magnetic field orientation; rolling ball milling requires gasoline protection...

Magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures, for example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core materials. Manganese-zinc ferrites are characterized by high magnetic permeability and high magnetic flux density, and at frequencies below 1MHz, they have low loss characteristics. Nickel-zinc ferrites have extremely high resistivity, low magnetic permeability of less than a few hundred, and low losses at frequencies higher than 1MHz. Ferrite cores are used in coils and transformers of various electronic devices.

Rubber Magnet is one of the series of ferrite magnetic materials. It is made of bonded ferrite magnetic powder and synthetic rubber. of the magnet. It can be processed into strips, rolls, sheets, blocks, rings and various complex shapes. Features of the original: It has flexibility, elasticity, and bendability. It can be produced into...

NdFeB magnet manufacturers follow the technological innovation of the automotive industry and human needs for energy conservation and environmental protection, and electric or hybrid vehicles with low energy consumption, low noise, and less exhaust gas have become the goals that everyone seeks. Bonded NdFeB magnets have the advantages of high magnetic performance, small size and high efficiency. The efficiency of motors using NdFeB magnets is 8-50% higher than that of ordinary motors, the power consumption is reduced by more than 10%, and the volume and weight can be increased by 30%. above. Complete the development of automobiles in the direction of miniaturization, light weight, high performance, energy saving and environmental protection.

Samarium cobalt magnet is a kind of rare earth magnet. It is a magnetic tool material made of samarium, cobalt and other metal rare earth materials through proportioning, melting into alloy, crushing, pressing and sintering. It has a high magnetic energy product. , Very low temperature coefficient, the maximum working temperature can reach 350 ℃, the negative temperature is not limited, when the working temperature is above 180 ℃, its maximum magnetic energy product (BHmax), coercivity (coercivity) and temperature stability and chemical stability Both exceed NdFeB permanent magnet materials.

Magnetic materials play an increasingly important role in the production of modern industrial equipment. According to different properties, magnetic materials can be divided into two categories: metallic magnetic materials and non-metallic magnetic materials. What are the differences between them? First of all, metal magnetic materials, as the name suggests, are magnetic materials made of metal alloys or metal compounds. Most of the metal magnetic materials are based on iron, nickel or cobalt, and then some other elements are added at high temperature.