Call Us Today! 86-574-27667267|

Magnetic Properties

/Tag:Magnetic Properties

Iron can melt, what happens when the magnet melts?

Iron can melt, what happens when the magnet melts? First, there are many kinds of magnets, such as neodymium-iron-boron magnets, alumino-nickel-cobalt magnets, ferrite magnets, etc., but these magnets are generally made by hand. There is no explanation here. We only talk about magnets that exist in nature. It is also a natural magnet. Natural magnets, [...]

Introduction to Magnetic Materials

Introduction to Magnetic Materials A magnetic material is a material that can react to a magnetic field in a certain way. It is called a magnetic material, and generally consists of a transition element such as iron, cobalt, nickel, and alloys thereof, which can directly or indirectly generate magnetism. Magnetic materials are generally classified into [...]

About Some Magnet Knowledge

About Some Magnet Knowledge Permanent magnet material: The permanent magnet material is magnetized by an external magnetic field and does not disappear. It can provide a stable magnetic field to the external space. There are four common metrics for NdFeB permanent magnets: Remanence (Br) units are Tesla (T) and Gauss (Gs) 1Gs = 0.0001T A [...]

What is Bonded NdFeB Magnets

What is Bonded NdFeB Magnets Bonded NdFeB Magnets are produced by melt spinning a thin ribbon of the Nd-Fe-B alloy. The ribbon contains randomly oriented Nd2Fe14B na no-scale grains. This ribbon is then pulverized into particles, mixed with a polymer and either compressed or injection molded into bonded magnets. Bonded magnets offer less flux than [...]

Magnetic Capacity Measurement

Magnetic Capacity Measurement 1. Magnetic capacity measurement a) Magnetic Properties: Br, Hcb, Hcj,(BH)max, Hk, Ms,μrec, Hk/ Hcj etc. b) The test instrument used is the Hysteresisgraph tester. c) Hcj value between 50 and 20,000 Oe can be measured. 2. Magnetic Properties at high and low temperatures (-40 to 250 ºC): Properties tested at any temperature [...]

Flexible NdFeB Magnets

Flexible NdFeB Magnets Characteristics: ● Good flexible properties, virtually no cracking, no chipping (No cracks on the magnet when 1 mm thick sheet was wrapped around 10 mm diameter mandrel). ● Highest magnetic properties, (BH)max come up to 80KJ/m3 in laboratory, the (BH)max (16~68KJ/m3 ) can be in mass production. ● Temperature capability -40 deg.C [...]

SIX Things to Know About Magnets

SIX Things to Know About Magnets Almost everyone knows these six basic facts about how magnets behave: 1, A magnet has two ends called poles, one of which is called a north pole or north-seeking pole, while the other is called a south pole or south-seeking pole. 2, The north pole of one magnet attracts [...]

Advanced permanent-magnet generator for gearless wind turbines

Advanced permanent-magnet generator for gearless wind turbines Main target of the PERMAGWIT project was the design, manufacturing and testing of an extremely silent, efficient and reliable 1.5MW direct drive generator system for gearless pitch-controlled wind turbines. A prototype of the generator, the electronic power converter and a suitable turbine nacelle should be developed within this [...]

Magnetic Material Classification

Magnetic Material Classification, The classification of magnetic material According to the magnetic  material under action of external magnetic field, the material is divided into anti magnetic material, anti ferromagnetic material, magnetic material. The latter two are strong magnetic material, magnetic material is widely used in science and technology. Magnetic materials classification generally divided into metallic [...]

Injection molded Neodymium magnets

Injection molded Neodymium magnets Besides sintered magnets and bonded magnets categories, injection molded magnet is one of the more important developments in magnetic materials, it has opened a new world of application opportunities. Similar to plastic injection molding, magnet injection molding process is by mixing the magnetic powder together with polymer binder, heated in the [...]

Injection Molded Ferrite Magnets

Injection molded ferrite magnets Injection molded Ferrite is another molding process of magnet category. Compared to injection molded NdFeB, the difference of injection molded Ferrite lies in different magnetic powder utilized, therefore injection molded ferrite has lower magnetic properties due to ferrite features, but it costs much less than that of NdFeB. Injection Molded [...]

Injection Bonded Ferrite Magnet Properties

Injection Bonded Ferrite Magnet Properties It is a new kind of composite permanent magnetic material with the features of flexible shaping, precision dimension, adjustable magnetic properties, fine coherence, composite molding, elastic magnetization and high mechanical strength. Low cost, widely used in many different applications ,stable magnetic property with strong demagnetization resistance capability. Good corrosion resistance [...]

Magnet Thermal Aging

Magnet Thermal Aging What is magnet thermal aging? Even though we usually say “permanent magnet”, but magnets do not remain magnetism permanently. In general, permanent magnets are gradually demagnetized by the impact of heat variations. This behavior of magnet can be determined by total flux change over time for a given temperature, also known as [...]

Brief Introduction of Sintered Alnico Magnet

Brief Introduction of Sintered Alnico Magnet Alnico magnet has got a lot of attention after discovered by Tokushichi Mishima in 1931. Alnico magnet is still occupying the important position among the consumption structure of permanent magnet even this days due to its several advantages. Alnico magnet can be divided into sintered Alnico magnet and casting [...]

Magnet Temperature Effects

Magnet Temperature Effects Magnetic properties of all the permanent materials change with temperature. Remanence, and thus the magnetic flux a magnet produces, decreases in all magnetic materials with increasing temperature. Ultimately, at certain, for each material characteristic temperature the material becomes non-magnetic. This temperature is known as Curie temperature (Tc). Figure 1 illustrates the temperature [...]

Magnetizing Machine

Magnetizing Machine In magnetizing the magnetic domains inside of a magnet are aligned with the magnetizing field. If the magnetizing field strength is high enough, all the domains will be aligned and the magnet is said to be magnetized to saturation. Magnetizing to saturation is usually recommended as only then are the magnetic properties of [...]

Magnetic Measurements

Magnetic Measurements For measuring of the fundamental magnetic properties of a material (Br, bHc, iHc, BHmax, demagnetisation curve), Hysteresisgraph or BH-tracker is used. A BH-tracker consists of an iron (usually FeCo) yoke to form a closed circuit, electromagnets to create the demagnetizing field and fluxmeters to determine the demagnetizing field and the materials response. [...]

Magnetic Properties and Magnet Customization

Magnetic Properties and Magnet Customization 1) What is the strongest type of magnetic material? Neodymium iron boron magnets are the strongest magnet available with energy products up to 52MGOe available. Neodymium alloys are very susceptible to magnetic strength loss due to high temperature therefore proper consideration should be given when selection neodymium for use within [...]

Magnet Machining Process

Magnet Machining Process Magnet Machining Process - Magnets that have been through the sintering process are machined and plated. Machining Due to shrinkage from the sintering process, required measurements are achieved by grinding the magnets with abrasives. Diamond abrasives are used for this process because the magnet is very hard. machining Surface Treatment (Plating) [...]

Magnet Sintering Process

Magnet Sintering Process Magnet Sintering Process - Separation / Reflinement Beginning with rare earth ore, high purity rare earth oxides are separated and refined. Measurement of Raw Materials Additives such as rare earth metals, iron, cobalt and others are measured to produce the desired composition. The materials are then melted in a vacuum induction furnace as shown below. measurement-of-raw-materials [...]

How to avoid demagnetising magnet ?

Avoid Demagnetising Magnet Demagnetisation is the process whereby a magnet loses all of its magnetic properties. The magnet most prone to demagnetisation is the ferrite magnet due to the alloy it is made of, however all magnets can be demagnetised. To avoid demagnetising your magnet, follow these guidelines: Separating your magnets Make sure you separate [...]

Three Key Differences of Permanent Magnets

Permanent Magnets magnetic materials: NdFeB, ALNICO, SMCO, Hard Ferrite 1. Magnetic properties depend on the dimensions of the magnet, so they can not be like other components designed or set arbitrarily. 2. The upper temperature limit is different for the different magnetic materials. 3. Temperature changes and external fields influence the magnetic stability of the [...]

Electromagnets vs Permanent Magnets

Permanent Magnets vs Electromagnets Electromagnets and Permanent Magnets: What are the Differences? An electromagnet is made from a coil of wire which acts as a magnet when an electric current passes through it. Often an electromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by [...]