Specification: round hole (trapezoidal sinkhole) 18mm*5mm-4.2mm (diameter * thickness - round hole size) non-standard size can be customized.

Plating:Nickel plating(can be customized galvanized, gold-plated, chrome plated, epoxy resin)

Magnetizing direction:The thickness direction is magnetized.N S is in the maximum two circles, not on the side!

Working temperature: maximum 80c. (can be customized for various temperatures)

Product details: price for a single strong magnetic price (one)

Warm tips: strong magnetic grip, careful and fragile, dry room temperature preservation.

USES: ndfeb magnet is now widely used.

1. Vacuum circuit breaker, magnetic holding relay, meter, meter, meter, dry reed pipe and sensor of electronic and electronic permanent magnet mechanism.,Speaker, receiver, microphone, alarm, stage audio, car audio, etc.

2. Motor area: VCM, CD/ dvd-rom, generator, motor, servo motor, micro-motor, motor, vibration motor, etc.

3. Mechanical equipment: magnetic separation, magnetic separator, magnetic crane, magnetic machinery, etc.

4. Medical care equipment: nuclear magnetic resonance instrument, medical device, magnetic health care products, etc.

Other industries: magnetized paraffin, pipe cleaner, magnetic jig, automatic machine, magnetic lock, door and window magnetic, luggage magnetic, leather bag, magnetization economizer.Magnetic, toy magnetic, tool magnetic, craft gift packaging, etc.

Ndfeb magnet introduction and performance table.

The third generation of rare earth permanent magnet ndfeb is the most powerful permanent magnet in the modern magnet. Its BHmax is 5-12 times that of ferrite magnets and 3-10 times as much as aluminum and nickel cobalt magnets. It has five to ten times as much force as a ferrite magnet, five to fifteen times as much as a nickel and cobalt magnet, and its potential magnetism is so high that it can absorb a weight of 640 times its own weight.
Because the main raw material of nd-fe-b magnet is very cheap, the reserves of rare earth neodymium are 10 to 16 times higher than that of samarium, so its price is much lower than that of samarium cobalt magnet.
The mechanical properties of neodymium ferroboron magnets are better than samarium cobalt magnets and aluminum and nickel cobalt magnets, which are easier to cut and drill and complex shape processing.
The deficiency of neodymium iron boron magnet is its poor temperature performance, high magnetic loss at high temperature and low working temperature. Typically around 80 degrees Celsius, the highest working temperature of a specially treated magnet can reach 200 degrees Celsius.
Because of the high amount of neodymium and iron in the material, it is easy to rust and is a major weakness. So ndfeb magnets must be coated. Electroplated nickel (Ni), Zinc (Zn), gold (Au), chromium (Cr), Epoxy resin, etc.

Production process:
Ingredients - & gt; Smelting, & gt; The coal pulverizing, & gt; Molding - & gt; Sintering - & gt; Testing - & gt; Mechanical processing --> Electroplating, & gt; Magnetization - & gt; Test - & gt; packaging