Preparation process of sintered NdFeB magnets (2) - Milling powder In the previous issue, we learned about alloy smelting and casting. After casting, the alloy needs to be made into powder through a pulverizing process before entering the subsequent processing process. Obtaining suitable powder shape, average particle size and particle size distribution is the basic [...]
Preparation process of sintered NdFeB magnets (3) - orientation forming Magnetic field orientation forming is to use the interaction between magnetic powder and external magnetic field to arrange the easy magnetization direction of powder particles so that it is consistent with the final magnetization direction of the magnet. This is the most commonly used method [...]
Preparation process of sintered NdFeB magnets (4) - Sintering, heat treatment and machining Sintering and heat treatment The blanks pressed by magnetic field orientation are sintered in a high vacuum or pure inert atmosphere to reach a high density close to 95% of the theoretical density. The magnet holes are in a closed structure, which [...]
NdFeB chemical composition analysis (ICP analysis) The chemical composition analysis of NdFeB materials generally includes: 1-Chemical composition analysis of raw materials, including the chemical composition of rare earth metal raw materials, as well as industrial pure Fe, B-Fe alloys and other metals, such as Ga, Al, Nb, Zr, etc.; 2- The chemical composition of the [...]
Application of High Performance Sintered NdFeB Magnets in Wind Power Generators Abstract: The permanent magnet wind turbine adopts high-performance sintered NdFeB permanent magnets, and the high enough coercive force can prevent the magnets from demagnetization at high temperature. The life of the magnet depends on the substrate material and surface anti-corrosion treatment. The anti-corrosion of [...]
If Magnet Keeps Doing External Work, Will Its Magnetism Become Weaker? The problem itself is actually a misunderstanding of magnets. Magnets can do work, but they do not consume their own magnetism in the process of doing work. Magnets look magical, but they are actually not mysterious. The principle is very similar to that of [...]
Why is the US Military Hypersensitive to a Chinese Magnet? Some time ago, during a routine inspection of the F-35 fighter jets, the US military "suddenly" discovered that there were actually Chinese-made magnets on the turbine engines of these fighter jets! This is incredible. The U.S. military has regulations prohibiting the procurement and use of [...]
Standards and Requirements for Using NdFeB Magnets Neodymium iron boron magnets are particularly strong in magnetism. The first thing to do is to prevent hands or other parts of the body from being clamped by the magnets. More attention should be paid to safety for large-scale strong magnetism. Do not place strong magnets near electronic [...]
Concentration Problem of Powerful Strong Magnets One of the daily tasks in the overall planning of the equivalent circuit of a strong magnet is to drive the magnetic flux density of the magnetic air gap as far as possible. The analogy of the power circuit to the current intensity driving is simple, just modify the [...]
Uses and Advantages of Thin Flat NdFeB Magnet We have introduced to you How thin can thin magnets be machined ? Today, we will introduce to you where the neodymium thin magnets are mainly used. Where are neodymium thin flat magnets used? Thin sheet neodymium magnets are widely used in packaging, hardware accessories, permanent magnet [...]
Can Gauss Meter Measure The Performance Grade of Magnet? A similar topic about whether a gauss meter can be used to measure the performance and grade of a magnet is often asked by customers. Can a gauss meter be used to determine the grade of a magnet? Today, the magnet supplier MPCO answered this question. [...]
The Quality Judgment of Permanent Magnets Can Refer to These Aspects Although many users often use permanent magnets and may have purchased them more than once, they still do not know how to judge the quality of permanent magnets. This article will show you how to judge the quality of permanent magnets. You can refer [...]