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24/04/02

Electroplating layer of magnet knowledge

Magnet electroplating is a product appearance and storage time is very important to a work, its surface treatment is mainly zinc, nickel, copper, chromium, gold, black zinc, epoxy resin. Its surface plating is not the same as its color is not the same as its preservation time is not the same, each has its own advantages and disadvantages. 1) zinc: the surface looks silvery white, can do 12-48 hours of salt spray, can be used in some glue bonding, (such as AB glue) such as electroplating can be stored for two to five years, its advantage is that the price is relatively low. 2) nickel: looks like stainless steel color, left in the air surface is difficult to be oxidized, and the appearance is good, good gloss, electroplating can be over 12-

24/04/02

Processing of commonly used magnets

Commonly used magnets are processed into a cylinder: the diameter is 2mm to 100mm, and the thickness is above 0.5mm. Circular magnets are simple to process and can be formed once. Therefore, circular magnets are mostly used when making orders. The biggest advantages of this magnet are fast processing speed and short delivery time. Square magnet: square magnet processing is slow, because it needs to cut 6 sides, a product needs to be processed 3 times to be successful, compared to the round magnet more than two processes, so the square magnet processing speed is slow, long delivery time. Three-belt products: before the product is cut and processed, a hole of the specified size is punched on the wool blank and then

24/03/21

Long time contact magnet, will be harmful to the body?

Magnets are not invented by people, they are natural magnetite. The ancient Greeks and Chinese discovered a natural magnetized stone in nature and called it "magnet". This stone can magically suck up small pieces of iron and always point in the same direction after swinging at will. Early navigators used this magnet as their earliest compass to identify directions at sea. The earliest discovery and use of magnets should be the Chinese, that is, the use of magnets to make a "compass", is one of China's four great inventions. After thousands of years of development, today magnets have become a powerful material in our lives. By synthesizing alloys of different materials, it is possible to achieve and absorb.

24/03/21

What is the principle of magnet?

The principle of magnets can be analyzed from the molecular structure of matter: matter is mostly composed of molecules, molecules are composed of atoms, and atoms are composed of nuclei and electrons. Inside the atom, electrons spin and revolve around the nucleus. Both of these movements of electrons produce magnetism. But in most substances, the direction of electron motion is different and chaotic, and the magnetic effects cancel each other out. Therefore, most substances do not exhibit magnetism under normal circumstances. Ferromagnetic substances such as iron, cobalt, nickel or ferrite are different, and their internal electron spins can be arranged spontaneously in a small range to form

24/03/21

The source of magnetic properties of NdFeB magnets

First, the origin of the magnetism of matter If the magnetism of a magnet is an electromagnetic ether vortex, a magnet, does not see any electromagnetic ether vortex, why is there magnetism? Our answer is: the magnetism of matter originates from the movement of electrons in atoms, and the movement of electrons produces an electromagnetic ether vortex. As early as 1820, Danish scientist Oster discovered the magnetic effect of current, and for the first time revealed the connection between magnetism and electricity, thus linking electricity and magnetism. In order to explain the phenomenon of permanent magnets and magnetization, Ampere proposed the molecular current hypothesis. Ampere believes that there is a ring current in the molecules of any substance, called molecular current, and

24/03/21

Why are magnets magnetic?

The iron absorption of NdFeB magnet is determined by the characteristics of the magnet. If it is explained by atomic current, it is the magnetic field generated by current magnetizing other objects magnetizing objects to generate electric field and electric field interaction to generate force. Substances are mostly made up of molecules, molecules are made up of atoms, and atoms are made up of nuclei and electrons. Inside the atom, electrons spin and revolve around the nucleus. Both of these movements of electrons produce magnetism. But in most substances, the direction of electron motion is different and chaotic, and the magnetic effects cancel each other out. Therefore, most substances do not exhibit magnetism under normal circumstances. Iron, cobalt, nickel or iron oxide

24/03/21

NdFeB magnet production process

NdFeB magnet manufacturing process 1. Ingredients of pure metal or alloy in proportion 2. Vacuum induction melting 3. Crushing air flow milling powder (nitrogen protection) about 5 microns 4. Orientation molding and isostatic pressing under magnetic field 5. Vacuum and protective atmosphere sintering 6. Post heat treatment 7. Mechanical processing, coating 8. Pulse magnetization 9. Packaging and shipping Source: magnet manufacturer Youlian Magnetics www.youliancy.com

24/03/19

How do NdFeB magnets come out?

NdFeB magnets, as the name implies, are mainly composed of neodymium, iron, boron and other raw materials. According to the design performance requirements, relevant raw materials such as copper, aluminum, dysprosium, terbium, etc. are added, put into a melting furnace, melted into alloy pieces, and then crushed. Large pieces are broken into small pieces, and small pieces are broken into particulate powder. According to the design performance requirements, air flow mill or hydrogen crushing equipment will be used. After crushing, it is die-cast and molded, then put into a sintering furnace for sintering, and after being discharged from the furnace, it is processed into all the shapes we have seen so far: square magnets, disc magnets, ring magnets, tile magnets, triangles, magnetic balls, etc., which are magnetized and packaged for shipment after galvanizing or nickel. Ben

24/03/19

Strong magnetic items are also prohibited items

Everyone knows that the control of dangerous goods such as knives, guns, flammable and explosive goods is prohibited by public transportation such as trains, but did you know that strong magnetic goods are also prohibited from being carried on trains. On January 24, at Yujiapu Railway Station in Tianjin, the railway police on duty seized more than 40 strong magnets in a passenger's luggage. In the face of the passenger's inunderstanding, our railway police started an experiment on the spot. With curiosity point video → http://video.sina.com.cn/view/253829459.html磁铁,电机磁铁,强力磁铁,异形磁

24/03/19

What is the magnetic effect of the magnet?

First, the history of magnetized water magnetic force is one of the four basic forces of nature, one of the four great inventions of ancient China compass, is an example of the clever application of magnetic force. As early as 500 years ago, Li Shizhen, a medical scientist in the Ming Dynasty, discovered that water treated with magnetic force had the effects of "removing sores and fistulas, growing skin", "drinking for a long time makes people have children, suitable for drinking" and "strengthening yang" (see "Compendium of Materia Medica", pages 583-586), which can strengthen the body and treat a variety of diseases. However, the magnetic material used by the ancients is a naturally occurring natural magnet-magnetite, and its magnetic properties are very low compared with modern synthetic magnetic materials. 2. high strength

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