Ningbo Jinlun Magnet Technology Co., LTD is professional block rare earth magnets manufacturers and strong ring magnets suppliers, our factory offer series of magnetic material worldwide. Strong magnetic material, chances are this term refers to a certain material that is made up of alloys with very strong magnetizing properties. Some of the more common materials used in making these magnets include iron, tungsten, cobalt, platinum and even tin. Unfortunately, some of these materials can be harmful when they are accidentally introduced into your body. It is actually difficult to find strong magnets in their natural state. While rare earths are found in nature naturally, they are so reactive that they cannot be made into a usable product without a great deal of effort on the part of scientists. As a result, they are commonly synthesized using the alloys mentioned above, which is where the term "strong magnet" comes from.
Rare earth magnets have been around for a very long time, though it is hard to pinpoint when they were first invented. They can be seen in everything from watches to clothing but were primarily developed for use on automobiles. In addition to being used in the automotive industry, many other industries have found great success in using rare earth magnets in their equipment. This includes medical, aerospace and manufacturing industries. There are a number of different types of magnets available, including ferromagnetic and magnetite.
Dimensional deviation (unit: mm)
|Size||Allowable deviation of sintered surface||
Allowable deviation of working surface
|Perpendicular to the pressing direction||Direction of suppression||Flat grinding||Internal and external round grinding||Wire cutting||slice|
|Variation type||Variation type||Basic size（mm）||Deviation|
|Parallelism||Working surface room||
One half of the tolerance value
between the two planes
|Verticality||Between sintered surfaces||Random||90°±1°|
|Between machined surface and sintered surface||90°±1°|
|Working surface room||90°±0.15°|
|Concentricity||Between sintered surfaces||Outer diameter||≤14||±0.35mm|
|Working surface room||Random||±0.08mm|
Nickel-plated copper nickel
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