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 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 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 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 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 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 - 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 - 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 [...]
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 [...]
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 [...]
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 [...]
