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How to consider the specifications and types of magnets

When choosing NdFeB magnets, customers should choose the magnet trademark suitable for them according to their working temperature. If the working temperature is higher than the...

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Ball milling of sintered neodymium iron boron

In the experiment, ball milling was used to produce powder due to the limited amount of raw materials, but overall, the particle size of the powder obtained by ball milling is not as uniform as that obtained by airflow milling. The ball to material ratio is 10:1, the medium for ball milling is 120 # aviation gasoline, and the ball milling tank is made of stainless steel. The balls used are steel balls with four diameters, namely 2mm, 5mm, 8mm, and 10mm. Each type of steel ball has the same weight.Pulverizing includes two processes: coarse crushing and grinding. Firstly, the oxide skin on the surface of the ingot should be removed, and then coarse crushing should be carried out. When the ingot is broken to about 20mm, hydrogen crushing method is used to improve its fragility and make ball milling easier. Grinding fine powder includes two methods: ball milling and airflow milling. Among them, the airflow mill utilizes the collision between powders under the propulsion of supersonic airfl

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2023-09

Summary of Issues Related to Magnet Planar Multipole Magnetization

What is the maximum magnetic force of the magnetization machine?The magnitude of magnetic force mainly depends on the material of the magnet (magnetic energy product) because that is an internal factor. The magnetic force varies greatly depending on the material and product size.Can the magnetization machine of neodymium iron boron magnets be filled with ferrite?If a magnetizing machine filled with neodymium iron boron is used to charge ferrite, there will definitely be no problem, but a magnetizing machine filled with ferrite may not have enough power to charge neodymium iron boron.Common ways of magnetizing magnets?The magnetizing machine of the magnetic ring magnetizes, and the most charged ones are radial multipole magnetization, radial magnetization, planar single-stage magnetization, and planar multipole magnetization.What is the most difficult way to charge?It is understood that the most challenging aspect is radial magnetization. If it is ferrite magnetization, it will be relat

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2023-09

Speed sensor magnet

The Hall speed sensor magnet is mainly used in locomotive control systems to provide necessary guarantees for vehicle driving safety. Its working principle is that when the sensor's rotating mechanism rotates under external driving, it will drive the permanent magnet to rotate. The magnetic field passing through the Hall element will undergo periodic changes, causing changes in the output voltage of the Hall element. Through subsequent circuit processing, a stable pulse voltage signal is formed, As the output signal of the vehicle speed sensor.Usually, automotive speed sensors use injection molded magnets, such as injection molded neodymium iron boron multipole rings, injection molded ferrite multipole magnetic rings, and sintered ferrite radial multipoles, usually 4 or 8 pairs of poles (8 poles and 16 poles). We produce all these materials of magnets.1. D25.5 * 6.1 * 5.3/radial external charging 4-pole, around 550 Gauss2. Injection molded ferrite D24 * 16 * 5.65/diameter outer 8-p

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2023-09

Several common magnetization methods for multipole magnetic rings

A multipole magnetic ring is a type of magnet commonly used in motors, sensors, robots, and automation equipment. Unlike ordinary magnetization, there are multiple magnetic poles on one surface. In addition to differences in material, they also have differences in magnetization methods. Generally speaking, the material determines the magnetic field strength (magnetic properties) of the multipole magnetic ring, and the magnetization method determines its application.1. Axial multipole magnetization2. Radial multipole magnetization3. Outer diameter multipole magnetization (radial external charging)4. Inner diameter multipole magnetization (radial inner charging)5. Planar multipole magnetization6. Single sided multipole magnetization7. Full radial magnetization (radiation magnetization)8. Slope multipole magnetization

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2023-09

The processing of tile shaped magnet (iron) grinding machines can be divided into these three types

In the process of producing magnetic tiles (tile shaped magnets), grinding machines are often used for processing. Today, high-strength magnet manufacturers will tell you about the three types of tile shaped magnet (iron) grinding machines for processing.1、 Simple grinding machineSeparate grinding processes are used to grind one of the bottom, side, inner arc, and outer arc surfaces. Due to low grinding speed and unreliable clamping positioning, the machining accuracy is not high, and only rough machining can be performed to solve the consistency of the blank.2、 Single station grinding machineSeparate processes are used to process one of the surfaces, including the bottom, side, inner arc, and outer arc. The difference between this type of grinder and a simple grinder is that the machine tool has a reasonable structure, high accuracy, and high grinding speed, resulting in high precision and good consistency of the product.3、 Through type grinding machineFor manufacturers producing larg

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2023-09

Analysis of the reasons for insufficient magnetic force of rare earth neodymium iron boron magnets

When using neodymium iron boron magnets, there may occasionally be customer feedback that the magnetic force of the magnet is insufficient and cannot meet the product's usage requirements, which affects the use of the product. What exactly is going on? Without further ado, let's move on to the topic below.The performance grade, coercivity, residual magnetism, intrinsic coercivity, maximum magnetic energy product, working temperature, and other important parameter data of neodymium iron boron magnets are also parameters that customers need to refer to for customized procurement. Insufficient magnetic force is caused by multiple reasons.From the customer's perspective, customizing neodymium iron boron magnets also requires their own customer's requirements for product parameters. At the same time, these parameters are provided to the magnet manufacturer, and the manufacturer can customize production according to your requirements. If the parameters provided by the custome

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2023-09
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