Permanent magnets for elevator accessories are core functional magnetic components specially developed and produced for the modern elevator industry, mainly adopting high-performance neodymium iron boron (NdFeB) magnetic materials with ultra-high magnetic energy product, stable magnetic stability and excellent mechanical adaptability. As a key part of elevator traction machines, door operators, braking systems and sensing modules, these permanent magnets determine the operating stability, energy-saving efficiency, safety performance and service life of the entire elevator equipment. With the rapid upgrading of intelligent and energy-saving elevators in the global construction industry, traditional inductive elevator motors are gradually replaced by permanent magnet synchronous traction machines, making high-quality elevator-specific permanent magnets an indispensable core accessory in the elevator manufacturing and maintenance industry.

In terms of material performance, elevator accessories permanent magnets mostly adopt N35SH, N38SH, N40SH and high-temperature resistant series grades, which can stably work in the temperature range of -40℃ to 150℃, effectively avoiding magnetic attenuation or demagnetization caused by long-term operation heat generation of elevator equipment. These magnets have extremely high remanence and coercivity, with stable magnetic flux output, which can ensure the precise torque output of the elevator traction motor. Different from ordinary civilian magnets, elevator-specific permanent magnets undergo strict anti-demagnetization treatment and aging treatment in the production process. Through high-temperature aging, low-temperature aging and constant humidity aging tests, the magnetic performance attenuation rate is controlled within 1% within 10 years, fully meeting the long-term continuous operation requirements of elevator equipment.

In terms of structural design and processing, elevator permanent magnets support customized processing of various special shapes, including square, rectangular, arc, tile-shaped and special-shaped magnets, which are perfectly adapted to the internal assembly structure of elevator traction machines and door machines. The surface is treated with zinc plating, nickel plating, epoxy resin coating and other multi-layer anti-corrosion processes, which can resist air oxidation, moisture corrosion and slight vibration friction in the elevator shaft environment, prevent magnetic block damage and magnetic failure, and greatly extend the service life of the product. The dimensional tolerance of the product is strictly controlled within ±0.05mm, which ensures the precise assembly fit with the motor stator and rotor, reduces equipment operation noise and vibration, and improves the smoothness of elevator operation.

In practical application scenarios, elevator accessories permanent magnets are mainly used in three core modules. First, the permanent magnet synchronous traction machine, which is the power core of the elevator. The permanent magnet provides stable magnetic field power, realizing low-speed high-torque operation of the motor, reducing energy consumption by 30%-50% compared with traditional asynchronous motors, and achieving significant energy-saving and emission reduction effects. Second, the elevator door operator motor, the permanent magnet ensures the precise opening and closing speed and torque of the elevator door, avoiding jamming, excessive impact or incomplete closing of the door, and improving the safety and comfort of passenger use. Third, the elevator safety braking and sensing system, the small permanent magnet accessories are matched with the sensor to realize real-time monitoring of elevator speed, position and operating state, and trigger the safety braking device in case of abnormal operation to ensure elevator operation safety.

In terms of industry application advantages, elevator-specific permanent magnets have the characteristics of small volume, light weight and strong magnetic force, which can effectively reduce the overall weight and volume of the elevator motor, optimize the internal space layout of the elevator, and reduce the manufacturing and maintenance cost of elevator equipment. At the same time, the stable magnetic performance ensures the low failure rate of the elevator power system, reduces the frequency of equipment maintenance and parts replacement, and improves the operating efficiency of elevator equipment in residential, commercial, office building and industrial building scenarios. In addition, the product complies with international elevator industry safety standards and magnetic material industry specifications, with high safety and reliability, and is widely used in passenger elevators, freight elevators, villa elevators, sightseeing elevators and various special engineering elevators, becoming a core basic accessory supporting the stable operation of the modern elevator industry.