Ring ferrite high temperature resistant magnet is a special annular permanent magnetic component optimized and improved for high-temperature working environment, based on traditional ferrite magnetic materials. Ordinary ferrite magnets are prone to magnetic attenuation and even demagnetization when working in high-temperature environment for a long time, which limits their application in high-temperature industrial equipment. The high-temperature resistant ring ferrite magnet optimizes the material formula and sintering process, improves the high-temperature magnetic stability and thermal stability of the product, and can maintain stable magnetic performance in long-term high-temperature working conditions, solving the high-temperature failure problem of conventional ferrite magnets.

In terms of high-temperature resistance performance, ring ferrite high temperature resistant magnets adopt optimized high-temperature resistant ferrite formula, adjust the proportion of internal crystal grains and improve the material thermal stability. The product’s continuous working temperature can reach 150℃, and the instantaneous tolerance temperature is up to 180℃. Under long-term high-temperature operation environment, there is no obvious magnetic attenuation and irreversible demagnetization, and the magnetic field stability is far higher than that of ordinary ferrite ring magnets. After special tempering and stress relief treatment, the product has small thermal expansion coefficient, will not produce structural deformation and cracking due to high-temperature heating, and has excellent structural stability in high-temperature environment.

In terms of structural and process advantages, the product adopts integral annular sintering forming process, with uniform internal structure and no internal stress. The hollow annular structure makes the product have good heat dissipation performance in high-temperature working environment, which can quickly dissipate the heat generated by equipment operation, reduce the local temperature of the magnet, and further ensure the long-term stable work of the magnet. The surface of the magnet is smooth and flat, with uniform magnetic field distribution on the inner and outer circular surfaces, stable axial and radial magnetic force, and consistent magnetic output. The product supports standard size mass production and non-standard size customized processing, with complete specifications of inner and outer diameter and thickness, which can meet the assembly needs of various high-temperature equipment.

Ring ferrite high temperature resistant magnets have excellent high-temperature resistance, magnetic stability and cost performance, and are widely used in high-temperature industrial equipment, high-temperature electrical appliances, industrial furnace accessories, automotive high-temperature parts and other high-temperature working scenarios. In industrial heating equipment and industrial furnace auxiliary equipment, they are used for high-temperature magnetic positioning and fixing of equipment components; in automotive engine peripheral accessories and high-temperature electrical equipment, they provide stable magnetic field support for high-temperature operation of equipment; in household high-temperature electrical appliances such as ovens and disinfection cabinets, they are used for magnetic door suction and component fixing. Different from high-temperature resistant rare earth magnets which are expensive, high-temperature resistant ferrite ring magnets have low cost and good high-temperature stability, which can fully meet the magnetic functional requirements of medium and low magnetic force high-temperature working scenarios, and are the preferred high-temperature resistant magnetic components for cost-sensitive industrial and civilian equipment.