1. The circular permanent magnet is made of praseodymium, neodymium, pure iron, ferroboron and some metal elements in a certain proportion through multiple processes.
2. Nd-Fe-B is subdivided into sintered Nd-Fe-B and bonded Nd-Fe-B. sintered Nd-Fe-B is commonly known as strong magnet or permanent magnet, because the magnetic properties of sintered Nd-Fe-B are far better than bonded Nd-Fe-B.
3. Preparation process: batching - smelting - pulverizing - molding - sintering (sintered Nd-Fe-B) - processing - magnetization to make finished products. The processing process includes: grinding, slicing, wire cutting, drilling, casing, electroplating, etc.
4. The surface treatment of ring-shaped permanent magnets is common, including zinc plating, nickel plating, nickel plating, copper nickel, epoxy resin, electrophoresis, gold plating, etc.

Characteristics of circular permanent magnet
1. The ring-shaped permanent magnet has strong magnetic force, long-lasting and strong load-bearing capacity, and can absorb objects several times larger than its own volume.
2. Environmental friendly material, stable magnetic force and strong corrosion resistance. Generally, it can pass the salt spray test for 96 hours.
3. High and low temperature resistance, using high-quality rare earth neodymium iron boron, ferrite and other materials, -50 ° C to 260 ° c various temperature configurations are optional.

Our advantages
1. Rich experience: we are a ring-shaped permanent magnet manufacturer engaged in permanent magnet materials for many years, and can provide you with one-stop customized solutions for sintered NdFeB powerful magnets.
2. Quality assurance: there are many brands, models and specifications of circular permanent magnets; After strict production process, complete testing, analysis, detection and test are equipped to ensure that customer needs are met.
3. Fast delivery: it has a number of production equipment to meet the production requirements of customers for permanent magnet materials; It can ensure product quality, deliver goods on schedule, and provide customized processing services.
4. After sales considerate: professional after-sales team and logistics distribution system provide you with one-to-one considerate service for processing and delivery.

Application field of circular permanent magnet
Electroacoustic field: loudspeaker, receiver, microphone, alarm, stage sound, car sound, etc.
Electronic and electrical appliances: vacuum circuit breaker with permanent magnet mechanism, magnetic holding relay, watt hour meter, water meter, sound meter, reed, sensor, etc.
Motor field: VCM, CDDVD - ROM, generator, motor, servo motor, permanent magnet motor, micro motor, vibration motor, etc.
Mechanical equipment: magnetic separation, magnetic separator, magnetic crane, magnetic machinery, magnetic pump, etc.
Medical and health care: nuclear magnetic resonance instrument, medical equipment, magnetic therapy health care products, magnetized fuel economizer, etc.
Other industries: magnetized wax preventer, pipeline descaler, magnetic fixture automatic mahjong machine, magnetic lock, door and window magnet, luggage magnet, leather magnet, toy magnet, tool magnet, craft gift packaging, etc.