Mono-Pole Magnets
Mono pole magnets(also called as single pole magnets) are the magnets that only one surface have magnetism, the other surface just has very weak magnetism. We all know there are at least two poles for one magnet. Then how the mono-pole magnets be made? The method is coating one surface of the magnet with iron sheet. The magnetism of the coated surface is shielded, the magnetic lines are guided to the other surface, the magnetic force of other surface was strengthened. For some magnets application, only need the magnetic force of one side, the other side of magnetic force will cause interference; some application, only one side of magnetism can be used, the other side not used, which is not essential. For example packing magnets used on moon cake boxes. Then mono-pole can lower the cost and save magnetic material.
The magnetic force effect of mono-pole magnets decided by the following three aspects:
1. Material: material kind and thickness and the distance between magnets and iron coats have a close relation with magnetic power.The pure iron sheet is easy to lost magnetism, the refraction will be strengthened with special treatment.There is no 100% shielding material so far.2. Angle of coats: the effect is the best for solitary form angle coats, while right angle coats will lose the more magnetic line.3. Space: magnetic line is like mobile signal, it needs space to refraction.We can well use above principle to make the magnetic force of mono-pole magnets increased 50%. The maximum low cost and save material in the field of packing.Mono-pole magnets are widely used in moon cake boxes, mobile boxes, suitcases, leather etc.
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company:NingBo BeiLun Meank Magnetics Co.,ltd.
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