What is the melting temperature of a neodymium magnet?

NdFeB has many properties and grades, different properties use different temperatures, and the composition of the required raw materials is different. Generally speaking, the maximum temperature of N series NdFeB is 80 degrees

The melting temperature of the magnet generally reaches more than 1,000 degrees before it can be melted.

In this way, the melting temperature of the iron should be about two, so that the matter can be melted.

The temperature of this melting should be about 140 degrees Celsius, which should be 345.

The maximum operating temperature of the magnet depends on the magnetic properties of the magnet itself and the selection of the operating point. The operating point of the magnet can be expressed by the permeability of the magnet. For the same magnet, the higher the permeability coefficient of the magnetic circuit (i.e., the more closed the magnetic circuit), the higher the maximum operating temperature of the magnet and the more stable the performance of the magnet.

Therefore, the maximum operating temperature of the magnet is not a definite value, but varies with the degree of closure of the magnetic circuit. Under the premise of a given working point, the maximum service temperature of each grade of sintered NdFeB is as follows:

If the actual working temperature is close to the maximum operating temperature, and the magnet has a large demagnetization, either the magnetic circuit must be improved to improve the permeability coefficient of the magnetic circuit; Either a higher grade must be selected to ensure the normal operation of the magnet.

Rubidium magnets. Rubidium magnets vs. neodymium magnets.

In our lives, neodymium magnets are often confused with rubidium magnets, in fact, the [rubidium] (pronunciation: ru, such as) magnet that people often refer to is just a [neodymium] (pronunciation: nv, female) magnet. This entry is intended for the purpose of corrigendum by searchers who have been misread and misidentified.

Neodymium magnets. Neodymium magnets, also known as neodymium magnets, are tetragonal crystals formed by neodymium, iron, and boron (ND2Fe14B). [1]

Found. In 1982, Masato Sagawa of Sumitomo Special Metals discovered neodymium magnets.

Peculiarity. The magnetic energy product (BHMAX) of this magnet is greater than that of samarium cobalt magnets, and it is the substance with the largest magnetic energy product in the world at that time.

Process and use.

Sumitomo Special Metals has developed the powder metallurgy process, and General Motors has developed the melt-spinning process, which can prepare NdFeB magnets. This magnet is the most magnetic permanent magnet available today and is the most commonly used rare earth magnet. NdFeB magnets are widely used in electronic products such as hard drives, mobile phones, headphones, and battery-powered tools.

Maintenance and protection methods.

In order to avoid corrosion damage, it is necessary to protect the surface of the permanent magnet material, such as electroplating with gold, nickel, zinc, tin, and spraying epoxy resin on the surface.

The temperature of such a metal substance needs to reach several times before it can be melted.

Because only a high-temperature environment can provide enough heat to accomplish such a melting point melting.

The specific temperature is basically a few thousand degrees, so this temperature must be very high.

If you want to do this, you can open the encyclopedia and go to it, and it will take about a few thousand shots.

Regarding the melting temperature of the magnet, I estimate that it should be above 1200 degrees, and only at this temperature can the iron melt, right? Specifically, take a look at the relevant information!

How many degrees do you want to hear about Bandung, if the electricity is the temperature of Bandung, it should have a convenient product introduction.

The melting temperature is quite high, and Teddy can't melt at all.

What is this melting degree? I think it should be more than 7 million, not a few, it should not be able to be transformed, so I think it should be a few.

I just checked it for you, and I told you that the temperature is six.

The temperature at which Lu Zitie melted should be, and his degree should be very high.

The melting temperature of each is 20 degrees Fahrenheit, you can learn about the specifics.

If the temperature of the magnet melts, it can reach the highest ring.

312℃。That's pretty much it. Adding a few elements can improve a bit.

In order to explain this truth clearly, we must first know, why are ferromagnetic materials magnetic?

In terms of material composition, all matter is composed of its molecules. Molecules, in turn, are made up of atoms. Atoms, in turn, are made up of nuclei and electrons, and electrons are constantly rotating and revolving around the nucleus, and these two movements of electrons produce magnetism.

However, due to the different directions of their movement, they are chaotic, so that the magnetic effects inside the matter cancel each other out. Therefore, matter is not magnetic under normal circumstances.

However, under the action of the magnetic field of the outside world, the electrons that were originally moving inside the iron, nickel, and cobalt ferromagnetic materials were heard one by one like well-trained warriors"Standing - Aligning to the right"At this time, the magnetic effect produced by the rotational motion of electrons is consistent with the direction of the external magnetic field, and these substances appear magnetic. The electrons in non-ferromagnetic materials such as copper, aluminum, and lead, despite the strong magnetic field, are like a group of disobedient naughty children who refuse to listen"Password"While"Lined up neatly", still moving freely and freely, so there is no magnetism.

The reason why the magnet can attract the nail is because when the magnet with magnetism is close to the nail, the magnetic field of the magnet magnetizes the nail and attracts each other, and the nail is firmly connected to the magnet"Sticky"Together.

However, as the temperature of magnets and magnets increases, the thermal movement of molecules inside them becomes faster and faster. As a result, more and more electrons refused to listen"Queue up"of"Password"Finish. When the temperature rises to a certain value, the violent molecular thermal motion finally completely destroys the regularity of the direction of the electron motion, and the magnetism of the magnet disappears.

Metallurgists refer to the temperature at which magnets and magnets completely lose their magnetism"Curie temperature"。The Curie temperature of steel is 770.

Now, you should know why a red-hot magnet can't attract iron nails. Because of the red-hot magnet, the general temperature has exceeded 800. Of course, if we re-magnetize the magnet after the temperature drops, it will still be able to re-magnetize"work"Get up.

According to the performance of the actual product. Normal ordinary products will slowly lose their magnetism when working for a long time above 70-80 degrees, and if they work at a higher temperature, 100 or 100 degrees, they will lose magnetism in minutes. High temperature resistant products can reach up to 3-400 degrees.

It also varies depending on the material!