How to measure the surface gauss of cylindrical permennt magnet?

Cylindrical magnet, one of the commonest permanent magnets, is normally of NdFeB or ferrite material. But somebody knows little about the magnetization and how to test the surface gauss of magnet some how. So below is information about that in more detail.

What are magnetization orientations of cylindrical permanent magnet?

There are two traditional magnetization directions, diametrically magnetized and axially magnetized. Usually, disc magnet is magnetized through axle while cylindrical magnet is diametrically magnetized. And of course the actual orientation is subject to customer’s requirement.

How do we test cylindrical magnet’s surface gauss value?

There are two favorable places for testing, both ends and flank of cylindrical magnet. And please kindly note that the testing point must be smooth. Where to measure is actually depend on the permanent magnetic material and cutting direction chosen during the production.

For most cylindrical magnets, the best testing point are the ends. Sliding the gauss meter on the magnet, you could collect data and find the max gauss value. As for diametrically magnetized magnet, please move the gauss meter along the flank of the magnet. Thus the gauss range of magnet is obtained.

Do you have a general understanding of How to measure the surface gauss of cylindrical permanent magnets now?

Tags: permanent magnet, cylindrical magnet

Do you Know How the Permanent Magnets are Used for Beneficiation?

Everybody knows that lots of mineral resources are symbiotic, that is, there are varieties of minerals mixed together inside the mined material. These substances have different magnetic properties. According to this feature, people developed professional mineral processing equipment—magnetic separators that are equipped with permanent magnets.

By taking the advantages of the differences in magnetism and magnetic strength of minerals that have different components. These components will be attracted by permanent magnets, and because of the different attraction force, we can separate the minerals with different magnetic property that are mixed together, and achieve the beneficiation by magnetism.

Beneficiation magnets are mainly ferrite magnets and neodymium magnets. One machine uses a lot of them.

What kinds of magnetic separators will use permanent magnets?

There are mainly magnetic pulleys, conveyor magnetic pulleys, strong magnetic pulleys, supper strong magnetic rollers, magnetic bars, conveyor belt permanent magnets, the salvage magnetic plates, remote iron suction plates, etc.

So that’s how the permanent magnets are used for beneficiation. If you have any demand for magnets (neodymium, ferrite) that are used for magnetic separators, please contact us—China Rare Earth Magnet Limited.

Tags: permanent magnet, magnetic separators

What are the differences between the different sizes of magnets produced by a batch of permanent magnet materials?

When we produce strong magnets, we often encounter some customer questions, that is, customers found the magnetic force of different sizes of magnets is different, even though they are produced by a batch of material. In this case, we magnet manufacturers will explain to customers, magnets, its magnetic force is mainly depended on Gauss value. This Gauss value is the one our permanent magnet manufacturers often say the magnetic unit. Usually the larger value of this Gauss value, the stronger the magnetic force, then why the different dimensions produced, its Gaussian value is not the same? Let me talk about this question today.

The composition of the powerful magnet is made of NdFeB permanent magnetic material, in the theoretical data, if we use the same material under the same condition, while the magnet thickness decreases, the Gauss value of the magnet will also decrease, and then the magnetic force becomes weaker. The magnetism will increase with the increase of the area.

Here is one key point I would like to mention. The higher the surface Gauss value of magnets indicates the greater the magnetic force per unit area! Magnetic force = unit area of surface Gauss value* per unit area. However, it can’t jump to the conclusion that the magnetic force must be large with high surface Gauss value.

Therefore, permanent magnets in the same batch of materials produced by different sizes of magnets will have a Gauss value difference, which is actually a normal phenomenon. If you still have the other relevant questions of magnets, please feel free to contact us.

Tags: permanent magnet, magnet manufacturer

Permanent Magnets Might be Used in Microsoft’s Product 20190702

The Microsoft Surface computer is one of the most remarkable products of the Windows camp and is a best seller. Microsoft has rarely found a flaw regarding the hardware side in the business. However when it comes to their Surface lineup, it seems that something is different. Because a number of people swear by the Microsoft Surface Notebooks and their experience. But a new patent recently leaked from Microsoft’s stables which indicate some differences on their future plans!

However, the iFixit disintegration experts and the countless users who have to repair the Microsoft Surface have had something to complain about. The Surface is also renowned for it’s difficult to disassemble and repair design. With the latest Microsoft Surface Pro 6, iFixit experts gave then 1 point of repairability (out of 10 points). And for Surface Laptop 2 was got 0 of repairability, which means that it is almost impossible to repair this laptop. As for the Microsoft Surface Book 2, it received a 1 point score by iFixit as only the SSD can be exchanged.

The difficulty of repair resulted from nothing but a sum of two points. One is that Microsoft’s structural design is too complicated, and the other is that Microsoft uses too much glue.

Fortunately, Microsoft may have realized this problem and might attempt to fix it. A recently leaked patent from Microsoft shows that a new assembly technology was introduced. Guess what!!
From a patent perspective, Microsoft has tried to replace glue with permanent magnet to connect and secure electronic components to the housing through one or more magnetic attachment points.

The positive influence of this patent is that it can speed up the manufacturing process. Besides, foreign publications also have an opinion that this improvement can make the repair and recycling of computer much easier.

This technology seems like a creative solution. Secure the design points of a computer by using permanent magnets might make the overall disintegration easier to process. What’s more, people don’t need complex tools or familiar with the repair of their machines.

Tags: permanent magnet

The Operation on China Rare Earth Permanent Magnet Material Industry in 2018

The Operation on China Rare Earth Permanent Magnet Material Industry in 2018

According to the statistics of China Magnetic Materials Branch of Rare Earth Industry Association, in 2018, many industries such as new energy vehicles, energy-efficient appliances, electric tools, industrial robots have been a crucial support for the development of rare earth permanent magnet material industry. The development quality of the industry is constantly improving; the output of products is steadily increasing; the key enterprises have kept a great posture. The grain boundary mobility and other advanced technology have promoted further, and expand the new application fields such as the transaction motor for high speed railway. Output of sintered neodymium magnets blank is about one hundred and fifty-five thousand tons, has increased 5% than last year. The output of bonded neodymium magnets is 7 thousand tons, has increased 5%. The output of SmCo magnet is two thousand and five hundred tons, is same as last year.

Tags: permanent magnet, China magnet

Permanent Lifting Magnets 20190109

China Rare Earth Magnet Limited is specialized in producing permanent lifting magnets which are applied in all different types of related industry, such as steel supply, machine and etc. If you work on a business that often needs to move one big object from one place to another, using lifting magnets will be a good choice. Our lifting magnets can successfully transport objects that are very heavy.

Features and Benefits:
Integrated with the neodymium material with the strongest magnetic force
High lifting capacity
Easy for operation
Low weight-easy to move
No power consuming

We are top neodymium magnets manufacturer in China, welcome to send your inquiry about permanent magnets by email; we will reply you within one working day.

Tags: permanent magnets, lifting magnets

Ring Countersink Hole Neodymium Permanent Magnets 20190107

China Rare Earth Magnet Limited manufactures ring countersink hole neodymium magnets.
These neodymium magnets with countersink hole are ideal for any carpentry, home improvements or DIY purposes.

Specification:
Material: Neodymium Permanent Magnet
Grade: N35
Size: D20xd*xd4x3x5mm

Coating: NiCuNi
These three layers of coating, Nickel+Copper+Nickel, are very well in protecting magnets from corrosion and provide a smooth and glossy surface, thereby greatly increasing the longevity of magnets.
Magnetization direction: Across the thickness

We are top neodymium magnets manufacturer in China, welcome to send your inquiry about permanent magnets by email; we will reply you within one working day.

Tags: custom neodymium magnets, permanent magnet