HOT PRODUCTS

ABOUT US

JINYU MAGNET (NINGBO) CO., LTD, established in 2011, specialized in studying, manufacturing, developing and applying Ndfeb magnets and Ndfeb Magnetic Assemblies.
JINYU MAGNET keeps introducing advanced production and testing equipment and experienced professional personel to fully support more customers from over 30 countries.
Our magnetic products are mainly used in wind turbines & generators, serve motors, staring motor, linear motors, motive power, apparatus, loudspeakers, MRI, etc.
The principle " QUALITY FIRST, CUSTOMERS SATISFACTION " guided us to satisfied customers with best service.

PANY HISTORY

2003 Our CEO devoted himself to magnet field
2011 JINYU MAGNET was founded with 600 square meters factory and 9 employees
2013 Export to more than 20 countries
2015 Export amount rised up to 5,000,000USD, 70 High-qualified employees
2018 JUNYU MAGNET moved to new large factory with more than 5,000 square meters
2020 Export amount reached 15,000,000USD
2022 Sales amount reached 20,000,000USD and export to more than 50 countries and factory employees goes to 150.

APPLICATION

NEW PRODUCTS

COMPANY CERTIFICATES

EQUIPMENT

LATEST NEWS

What is a magnetic material

1. Magnetic materials: There are many classification methods for magnetic materials, which can be divided into industrial grade and civilian grade according to their use; According to performance, it can be divided into soft magnetic materials and hard magnetic materials; According to different application ranges, it can be divided into permanent magnetic field materials and Gaussian distributed electromagnets (such as motor rotors). 2. Production process: 1. Selection and treatment of raw materials - Mix various raw materials in a certain proportion and crush them into powder; 2. Ball milling of powder - treating impurities in the powder through a ball mill and distributing them evenly in all corners; 3. Add an appropriate amount of adhesive (such as epoxy resin or phenolic resin) to the powder after ball milling; 4. Add the mixed material into the mold for compression molding (injection molding) - to make the particles in the material come into contact with each other and form a certain shape; 5. Treat the surface of the pressed workpiece and polish it with sandpaper - remove burrs and scratches on the surface of the workpiece and make it smoother and smoother 6. Apply a layer of paint to the surface of the workpiece using spray painting to increase its wear resistance. 3. Product Introduction. 1. Used for manufacturing coil frames of various motor stator windings and other parts with high strength requirements. 2. Used for making iron cores for transformers, transformers, and other special motors. 3. Used as an iron core for high-precision instruments and meters. 4. Used as a spindle for electronic computer hard drive.. 5. Used as a crankshaft bearing for automotive engines. 6. Used for manufacturing precision mechanical components. 7. Can be used for medical equipment. 8. Can be used in the military field. 9. It can be applied in fields such as aerospace. 4. Main technical indicators. 1. Resistivity: 10 ^ -6~10 ^ -9scm. 2. Coercivity: 1kgmm2. 3. Residual magnetism: around 0-10mg. 4. Temperature characteristics: Resistivity at 20 ° C is 1 × one thousand and sixteen ω· M. 5. Working voltage: 5v ± 5%. 5. Scope of application. 1. Widely used in the production of stator coil frames and parts with high strength requirements for various types of generators, motors, and other rotating motors and electrical equipment 2. Suitable for the production of rotors and stators of special motors such as transformers and transformers, as well as electromagnets.

17 July-2023

Sintered NdFeB Magnet

Sintered NdFeB magnets are a type of permanent magnet made from an alloy of neodymium, iron, and boron. They are known for their exceptional magnetic properties, including high magnetic strength, high coercivity, and high energy density. The manufacturing process of sintered NdFeB magnets involves the powder metallurgy technique. The raw materials are mixed together in a powdered form and then compacted into a desired shape using a pressing process. The compacted shape is then sintered at high temperatures to bond the particles together and form a solid magnet. Sintered NdFeB magnets have a wide range of applications due to their strong magnetic properties. They are used in various industries, including automotive, electronics, renewable energy, and medical equipment. Some common applications include electric motors, generators, magnetic separators, magnetic resonance imaging (MRI) machines, and computer hard drives. Despite their excellent magnetic properties, sintered NdFeB magnets also have some limitations. They are prone to corrosion and can be brittle, making them susceptible to breakage if mishandled. Therefore, protective coatings or platings are often applied to enhance their corrosion resistance and durability. In summary, sintered NdFeB magnets are powerful permanent magnets with exceptional magnetic properties. They are widely used in many industries for various applications, but precautions must be taken to protect them from corrosion and breakage.

13 July-2023

A Brief History of Magnetic Materials

China is the first country in the world to discover and apply magnetic materials. As early as the Warring States Period, there were records on natural magnetic materials (such as magnetite). The method of manufacturing artificial permanent magnetic materials was invented in the 11th century. In 1086, Mengxi Bitan recorded the production and use of the compass. From 1099 to 1102, a compass was used to record navigation, and the phenomenon of geomagnetic declination was also found. In modern times, the development of electric power industry has promoted the development of metal magnetic materials silicon steel sheet (Si Fe alloy). Permanent magnet metal has developed from carbon steel in the 19th century to rare earth permanent magnet alloy, and its performance has been improved more than 200 times. With the development of communication technology, soft magnetic metal materials are still unable to meet the requirements of frequency expansion from sheet to wire and then to powder. In the 1940s, J.L. Snoijk of the Netherlands invented ferrite soft magnetic materials with high resistivity and good high-frequency characteristics, followed by low-cost permanent ferrite. In the early 1950s, with the development of electronic computers, Wang An, an American Chinese, first used the moment magnetic alloy element as the memory of the computer, which was soon replaced by the moment magnetic ferrite memory core, which played an important role in the development of computers in the 1960s and 1970s. In the early 1950s, people found that ferrite had unique microwave characteristics and made a series of microwave ferrite devices. Piezomagnetic materials have been used in sonar technology since the First World War, but the use has decreased due to the emergence of piezoelectric ceramics. Later, rare earth alloys with strong pressure magnetism appeared. Amorphous (amorphous) magnetic materials are the achievements of modern magnetic research. After the invention of rapid quenching technology, the tape making process was solved in 1967, which is in the transition to practicality.

07 December-2022

Prices of Neodymium and Praseodymium Products Trended Higher, Prices of Neodymium Rose 30,000 yuan/mt

The prices of neodymium rose by 30,000 yuan/mt to 890,000-900,000 yuan/mt on October 28. SHANGHAI, Oct 28 (SMM) – The prices of neodymium rose by 30,000 yuan/mt to 890,000-900,000 yuan/mt on October 28. The prices of neodymium oxide rose by 25,000 yuan/mt to 735,000-745,000 yuan/mt. The prices of didymium oxide advanced 25,000 yuan/mt and stood at 730,000-740,000 yuan/mt.

01 November-2021

Copyright © 2024 Jinyu Magnet (Ningbo) Co., Ltd. All rights reserved. Privacy Policy     Powered by   

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

Send