Parameter explanation and physical application of powerful magnet manufacturers
1. Definition
There are mainly the following three functional parameters to determine the function of a strong magnet:
Remanence Br: After the permanent magnet is magnetized to full capacity and the external magnetic field is removed, the retained Br is called the residual magnetic induction.
Coercive force Hc: To reduce the B of the permanent magnet magnetized to full capacity to zero, the required reverse magnetic field strength is called the magnetic induction coercive force, or coercive force for short. Fortune Magnets
Magnetic energy product BH: It represents the magnetic energy density established by the powerful magnet in the air gap space (the space between the two magnetic poles of the powerful magnet), that is, the static magnetic energy per unit volume of the air gap. Since this energy is equal to the product of Bm and Hm of a strong magnet, it is called the magnetic energy product.
2. Magnetic field
The space where the magnetic effect occurs on the magnetic poles is the magnetic field.
3. External magnetic field
The magnetic induction intensity at a specified position on the surface of a permanent magnet.
4. Choose a strong magnet
Before choosing which kind of powerful magnet to choose, it should be clear what effect the strong magnet needs to perform? strong magnet
5. The primary effect
Move objects, fix objects or lift objects.
6. The shape of the required powerful magnet
Disc shape, ring shape, square shape, tile shape or special shape.
7. The specifications of the required powerful magnets
Length, width, height, diameter and tolerance, etc.
8. The suction force of the required strong magnet, the expected quotation and quantity, etc.
The compass was created based on the properties of a strong magnet.
The effect of strong magnets
1. Physical effects
[1] Guide North
[2] Attract light and small objects
[3] Electric powerful magnets can be used as electromagnetic relays
[4] Motor
[5] Generator
[6] Electroacoustic
[7]] Magnetic therapy
[8] Maglev
[9] NMR
2. The therapeutic effect
Magneto is salty in taste and flat in nature; it belongs to the liver and kidney channels; its quality is heavy and calms down;
It has the effects of calming liver and subduing yang, improving ears and eyesight, calming shock and calming nerves, relieving qi and relieving asthma;
Indications for liver yang syncope, palpitation, insomnia, blurred vision, tinnitus and deafness, kidney deficiency and dyspnea.
A powerful magnet is an object that can generate a magnetic field. It is a magnetic dipole that can attract ferromagnetic substances such as iron, nickel, cobalt and other metals. The determination of the magnetic pole is to hang a strong magnet with a thin wire. The magnetic pole pointing to the north is called the north pole or N pole, and the magnetic pole pointing to the south is called the index pole or S pole. (If the earth is thought of as a big powerful magnet, the north pole of the earth's magnetic field is now the S pole, and the south pole of the earth's magnetic field is the N pole.) Strong magnets with different poles attract each other, while the same poles repel each other. The guide pole and the finger north pole attract each other, the guide pole and the guide pole repel each other, and the finger north pole and the finger north pole repel each other.
Classification of powerful magnets
Powerful magnets can be divided into "permanent strong magnets" and "non-permanent strong magnets". Permanent powerful magnets can be natural commodities, also known as natural magnets, or they can be artificially produced (the strongest powerful magnets are neodymium powerful magnets). Rather than a permanent powerful magnet, it will be magnetic only under certain conditions, usually in the form of an electric powerful magnet, that is, using an electric current to strengthen its magnetic field.
Transformation of Magnet and Powerful Magnet
The magnetic molecules inside the unmagnetized magnet (molecular strong magnet theory) are arranged irregularly, and the magnetic molecules will be arranged regularly after the magnetization process. At this time, the N pole and S pole of the magnetic molecule will face the same direction to make the magnet magnetic and become a powerful magnet. At the same time, there are opposite poles on the same powerful magnet and the magnetic quantities of the north and south poles are equal.
Powerful magnets, also known as magnets, refer to objects or materials that have a magnetic field around them and within themselves, and are divided into two categories: natural and artificial. Artificial strong magnets are usually made of metal alloys and have strong magnetism. It can also be divided into "permanent strong magnets" and "non-permanent strong magnets", that is, "hard magnets" and "soft magnets".
