The service life of NdFeB
Small disc neodymium magnets The stability of permanent magnetic material performance is an important indicator of permanent magnetic materials. Stability mainly refers to the process of magnetic properties changing under the influence of internal and external factors after magnetization, and is usually expressed by the rate of change of performance indicators small disc neodymium magnets. Common causes of magnetic property changes include temperature, time, electromagnetic field, radiation, mechanical vibration and impact, etc. In the last issue of Understand Magnetics, we have introduced the temperature stability of permanent magnetic materials (remanent magnetism temperature coefficient, coercive force temperature coefficient, reversible temperature coefficient, click to learn more). In this issue, let’s learn about […]
What are the key factors to consider when choosing a high-quality N40 magnet?
N40 magnets are powerful neodymium magnets with a maximum energy product of 40 MGOe. They are widely used in various applications, including motors, generators, sensors, and magnetic separation. When choosing a N40 magnet, it is essential to consider several factors to ensure it meets your specific needs and provides optimal performance. Introduction High-quality N40 magnets are powerful neodymium magnets with a maximum energy product of 40 MGOe. They are widely used in various applications, including motors, generators, sensors, and magnetic separation. When choosing an N40 magnet, it is essential to consider several factors to ensure it meets your specific needs and provides optimal performance. Magnetic Properties The magnetic properties of […]
永久磁石の形状異方性、減磁場、減磁率
A disk neodymium magnet The permanent magnet is made into a certain shape. For example, if the magnetization curve in the open circuit state is measured along the x, y, and z directions of the Disk Neodymium Magnet, it can be found that along the x direction, only a lower magnetic field (H1) is needed to magnetize it to technical saturation, while along the y and z directions, higher magnetic fields are needed to magnetize it to technical saturation. This phenomenon is called the shape anisotropy of the permanent magnet. The direction that requires a smaller magnetic field to magnetize it to technical saturation is called the easy magnetization direction; […]
単極ネオジム磁石と通常のネオジム磁石の違いは？
Neodymium magnets have revolutionized various industries due to their exceptional strength. Made from a unique alloy of neodymium, iron, and boron (NdFeB), these permanent magnets pack a powerful punch in a compact size. But what if you could harness this strength in a magnet with only one magnetic pole? Enter the concept of the single pole neodymium magnet, a fascinating theoretical idea with practical applications in the real world. This article delves into the intriguing world of single pole neodymium magnets, exploring the differences between them and their regular counterparts. We’ll begin by understanding the fundamental concept of magnetic poles in regular neodymium magnets. Magnetic Poles: The Invisible Force of […]
ホール素子の動作原理
N35 neodymium magnet The Hall element is a magnetic sensor based on the Hall effect. It can detect magnetic fields and their changes and can be used in various occasions related to magnetic fields. The Hall element has many advantages. It has a strong structure, small size, light weight, long life, easy installation, low power consumption, high frequency (up to 1MHZ), vibration resistance, and is not afraid of pollution or corrosion from dust, oil, water vapor and salt spray. The application range of the Hall element is extremely wide, such as signal sensors on automobile distributors, speed sensors in ABS systems, automobile speedometers and odometers, liquid physical quantity detectors, current […]
磁区とは何か？
Electro Permanent Magnet According to the characteristics of the material in the external magnetic field, the material can be divided into five categories: paramagnetic material, diamagnetic material, ferromagnetic material, ferrimagnetic material and antiferromagnetic material. Ferromagnetic material electro permanent magnet is a material that can maintain its magnetized state even if the external magnetic field disappears after being magnetized under the action of an external magnetic field. The basic characteristics of ferromagnetic material are the spontaneous magnetization and magnetic domain structure inside the material. Magnetic domain theory is the basis of modern magnetization theory. Almost all magnetic applications use domains as the basic unit, rather than an electron spin as a […]
磁気カップリング
Permanent Magnet Material Permanent magnetic couplings are a new type of coupling that connects the prime mover and the working machine through the magnetic force of permanent magnets. It does not require direct mechanical connection, but uses the magnetic coupling between permanent magnets. The magnetic field can penetrate a certain spatial distance and the characteristics of the material to transfer mechanical energy. The emergence of permanent magnet material magnetic couplings breaks the structural form of traditional couplings and adopts a new magnetic coupling principle to achieve force and torque transmission without direct contact between the driving shaft and the driven shaft, and can transform dynamic seals into static seals to […]
ハルバッハアレイは通常の磁石と比べてどの程度強力ですか？常に最良の選択ですか？
Introduction Briefly introduce magnets and their role in various applications. Introduce the concept of Halbach Arrays as a unique type of magnet arrangement. Demystifying the Power of Halbach Arrays Explain the basic principle behind Halbach Arrays: alternating magnet orientation to create a stronger field on one side and a weaker field on the opposite side. Compare the magnetic field strength of a Halbach Array to a single, regular magnet of the same material and size. Highlight the potential for increased strength on one side. Advantages of Halbach Arrays Enhanced Magnetic Field Strength: Discuss how Halbach Arrays concentrate the magnetic field on one side, making them ideal for applications requiring intense […]
モーター用フェライトアーク磁石の限界は？
Electric motors are ubiquitous in our daily lives, powering everything from home appliances to industrial machinery. A crucial component within these motors is the magnet, which generates the magnetic field necessary for rotation. While various types of magnets exist, ferrite arc magnets for motor have traditionally been a popular choice due to their affordability and ease of manufacturing. However, these magnets come with inherent limitations that can hinder motor performance in specific applications. This article delves into the key limitations of ferrite arc magnets for motors, empowering you to make informed decisions when selecting magnets for your motor projects. Introduction Ferrite arc magnets, also known as ceramic magnets, are a […]
