alnico cattle magnets

Reduce collisions, prevent heat, so the magnet demagnetization. Do not let the fear of the magnet bars close to the magnetic things: such as mechanical watches, displays. In particular, careful not to let the magnet close to the various magnetic! A little negligence will lead to big losses. Bi also beneficial to have appropriate magnetic field to stimulate specific acupuncture points is good, but too strong magnetic fields can lead to disorders of the biological field, insomnia, nausea, and so on. Avoid hand or other body part is clamped magnets, magnet for a larger size should pay attention to personal safety and protection. When using or storing magnet, please avoid gas, high conductivity containing corrosive environments (such as water containing electrolytes, etc.), acidic environment, organic solvents. Otherwise it will lead to corrosion and weakened magnetic and mechanical strength of the magnetic bar.

Alnico magnet is an alloy magnetic tools. Constituting the metal component is different, different magnetic properties, and thus uses are different. Alnico magnet has two different production processes: casting and sintering. Cast Alnico process can be processed into different sizes and shapes, high strength, high corrosion resistance, good temperature stability, maximum working temperature up to 600 ℃ or more. Cast aluminum nickel and cobalt magnetic device are widely used, mainly used in various fields sensors, meters, electronic, electrical, medical, education, automotive, aerospace, military technology.
Process: raw materials → ingredients → melting → heat treatment → Magnetic Inspection → grinding → → packaging and shipping to the subject.
Alnico magnet has a very good resistance to corrosion and heat resistance, mainly used in a number of precision instruments.

Alnico magnet is an alloy composed of aluminum, nickel, cobalt, iron and other trace metal elements. Metal component constituting the different magnetic properties are different, and thus different purposes. Alnico magnet has two different production processes: casting and sintering. Casting process can be processed into different sizes and shapes; compared with the casting process, the sintered product confined to a small size, their production out of the rough dimensional tolerances better than the rough casting products, magnetic products to be slightly lower than the casting, but better workability. In the permanent magnet material, the cast magnet drawers has a low reversible temperature coefficient, working temperature up to 600 degrees Celsius. Alnico magnet products are widely used in various instruments and other application areas.

strong performance bar magnets NdFeB magnets generally refers from praseodymium neodymium and iron alloys, the current material widely used in the market, but the strong magnetic

Iron in the course often encounter magnetic diminish or disappear was often the case, we summarize the following reasons demagnetize the grill magnets

1: Magnets injection or degaussing magnetic back, ordinary magnet temperature is 80 ℃, the injection is substantially above 12 ℃.

2: After pressing the magnets or magnet demagnetization, often applied glass plate pressing, temperature above 150 ℃.

3: oven baked magnet demagnetization

4: magnetic material contains too many impurities lead to weakening,

5: the impact of the results of the cause magnet demagnetization, such as high-frequency impact, etc.

6: Material containing metal magnetic powder and so lead to a false charge

7: high magnetic field strength magnet test magnet itself disappear or N / S pole change (magnetizing machine demagnetization machine)

Summing up the above demagnetization (degaussing) 90% of the basic reasons for this have four points, high temperature demagnetization, demagnetization of the material itself is the problem, the impact of high frequency demagnetization, high magnetic field demagnetization.

Aluminum-nickel-cobalt (AlNiCo) is the first developed a permanent magnet material is an alloy of aluminum, nickel, cobalt, iron and other trace metal elements. Alnico magnet material in the 1930s successfully developed. At the time, it's the best magnetic properties, temperature coefficient and small, which in most alnico cattle magnets permanent magnet motor, the most widely used. 60 years later, with ferrite magnets and rare earth permanent magnet of one after another, aluminum-nickel-cobalt alnico cattle magnets motor application gradually being replaced, the proportion declined.

According to the production process were divided into sintered Alnico (Sintered AlNiCo) and cast aluminum-nickel-cobalt (Cast AlNiCo). Products are mostly round and square shapes. Casting process can be processed into different sizes and shapes; compared with the magnetic pulley separator , the sintered product confined to a small size, their production out of the rough dimensional tolerances better than the rough casting products, slurry separators to be slightly lower than the casting, but better workability. In the alnico cattle magnets material, the cast Alnico magnet has a low reversible temperature coefficient, working temperature up to 600 degrees Celsius. Alnico magnet products are widely used in various instruments and other applications.

Advantages aluminum nickel-cobalt magnets are high remanence (up to 1.35T), low temperature coefficient. When the temperature coefficient of -0.02% / ℃, the highest temperature up to about 520 ℃. The disadvantage is that the coercive force is very low (typically less than 160kA / m), non-linear demagnetization curve. Therefore, although easy alnico magnet is magnetized, demagnetization is also easy.

Transformation magnets

Internal non-magnetized magnet magnetic molecules (molecular magnet theory) is randomly arranged, arranged after the process of magnetization of the magnetic molecules have rules. In this case, N pole and S pole of the magnetic elements will face in the same direction so that a magnet having a magnetic become magnet. Meanwhile, the presence of the opposite poles of the magnetic poles and an equal amount on the same magnet.

The main ingredient

Magnet magnet known, refers to the presence of the magnetic field around the object or material and their own internal, divided into two major categories of natural and man-made. Artificial magnets usually made of a metal alloy, having a ferromagnetic. Can be divided into "non-permanent magnet" and "non-permanent magnet," or "magnetic hard" and "soft." Natural magnet main ingredients: iron oxide, the chemical formula Fe3O4, often referred to as "magnetic iron oxide." Having a magnetic black crystals. Ferrous oxide and iron oxide compounds can be regarded as. Because the iron oxide crystals in the presence of two different valence states of ions, one third of Fe2 +, two-thirds of Fe3 +, is a complex compound. It is insoluble in water, it can not react with water. React with acids, alkali-insoluble. The main system for primer and paint, magnetic materials for the electronics industry, but also for rust in the construction industry.