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Model No.: 16-4.5x4.5
Brand: XL MAGNET
Place Of Origin: China
Species: Permanent
Composition: Rare Earth Magnet, Neodymium Magnet, Ndfeb Magnet
Application: Industrial Magnet
Tolerance: ±5%
Processing Service: Bending, Welding, Decoiling, Cutting, Punching, Moulding
Coating: Zinc
Shape: Round with countersunk hole
Packaging: Standard Anti-Magnetization Packaging,Customization Packaging
Productivity: US$5 Million-US$10 Million
Transportation: Ocean,Land,Air,Express,Express
Place of Origin: China
Supply Ability: 80,000 Kgs/Month
Certificate: ISO9001,ISO14001,ROHS,REACH
HS Code: 8505.11.0070
Port: Shenzhen,Guangzhou,Shanghai
Payment Type: L/C,T/T,D/P,D/A,Paypal,D/A
Incoterm: FOB,CIF,EXW,CPT,CIP,Express Delivery
What is sintered NdFeB Permanent Magnet material? Sintering is an extremely important process for sintering NdFeB permanent magnet materials and is highly valued by all manufacturers and researchers. The relative density of NdFeB green body is generally 50% ~ 70%, and the porosity is generally 30% ~ 50%. The bonds between particles are all mechanical bonds, and the bond strength is extremely low. If the molding pressure is very high and some of the particles that have been in contact with each other have undergone elastic or plastic deformation, the sample is prone to cracking and its microstructure is not high enough to produce high magnetic properties.
During the sintering process of NdFeB body, a series of physical and chemical changes will occur. First, remove gas (including water vapor), organic matter (such as oil or added antioxidants and lubricants, etc.) adsorbed on the surface of powder particles. ) Evaporation and volatilization, the stress is relieved, the oxides on the surface of the powder particles are reduced, and the deformed powder particles recover and recrystallize.
Secondly, atomic diffusion, material migration, and inter-particle contact change from mechanical contact to physicochemical contact, forming a combination of metal bonds and covalent bonds. The interface between the powders expands, a sintering neck appears, the sintering neck increases, the density increases, and the grain grows.
The powder green body has a large porosity and surface area, so it has a large surface energy and lattice distortion energy, so that the powder green body is in a high energy state as a whole. It is energetically unstable, with a tendency and driving force to spontaneously sinter and bond into a dense body.
Therefore, under certain temperature conditions, that is, where the dynamics allow, the contact between powder particles will be from point to surface, thereby reducing the surface area and surface energy. As the interface between particles expands, the green body begins to shrink and densify to become a sintered body. Simply put, sintering is the process of changing a powder combination from a green body to a billet.
Product Specs
Place of Origin: Guangdong, China
Brand Name: XL MAGNET
Material: Sintered Neodymium-Iron-Boron
Type: Permanent
Composite: Ndfeb Magnet
Application: Industrial Magnet
Shape: Customized shape with countersunk hole
Tolerance: ±1%
Grade: NdFeB, N35-N52(M, H, SH, UH, EH, AH)
Precise Tolerance: +/-0.05mm
Size: Customized
Coating: NI-CU-NI, Zinc, Epoxy, etc.
Magnetization Direction: Axial, Diametrical, Radially Multi-poles, etc. (Customizable)
Max Working Temperature: 80°C-220°C, depends on grade.
Density:7.45g/mm
Shipping Time: 7 days
Sample Lead Time: 10-15 Days
Bulk Order Lead Time: 20-30 Days
Certification: ISO14004/9001, ROHS, REACH
Product Images
Product Information
Sintered Neodymium Countersunk Magnet is a functional type of magnet with at least one end surface has an angled countersunk hole. It is typically measured by the outer diameter, through hole diameter, major diameter, depth, and angle. The countersunk hole makes it easy to mount the magnets onto both magnetic and non-magnetic surface using matching countersunk screw.The vast majority of Neodymium countersunk magnets are axially magnetized. The most common type is round shape magnet with countersunk hole, we can also supply block or other shapes with countersunk hole as per customer requirement.The Zinc coating is the second most common coating with relatively lower price, compared to NI-CU-NI coating. It is a self-sacrificing coating, which means when the material corrodes the outside turns white creating a strong layer of protection for the magnet.
Our main products include Sintered Neodymium Magnets, Bonded Neodymium Magnets, Ferrite Magnets, Rubber Magnets and Magnetic Assemblies. These products are widely used in toys, hardware, electronics, motors, instruments, medical equipment as well as other day-to-day applications. Please feel free to check out our other products and leave us a message if you have any questions!
Product Categories : Sintered Neodymium Magnets > Neodymium Countersunk Magnet
Sunny Fore Magnet Company Limited was established in 2003 and specializes in manufacturing rare earth magnet and magnetic products. The company is located in Xinhui District, Jiangmen City, Guangdong Province of China. It is based in the Guangdong-Hong Kong-Macau Greater Bay Area, also referred as the Greater Bay Area, one of China's leading manufacturing/economic regions. Over the past 20 years, Sunnyfore Magnet Co. Ltd has always strived to provide expertise in development and manufacturing of magnetic materials.
Our main products include sintered NdFeB magnets, bonded NdFeB magnets, rubber magnets, ferrite magnets and more. These products are widely used in toys, hardware, electronics, motors, instruments, medical equipment as well as other day-to-day applications.
Sunny Fore Magnet Company Limited provides excellent research and development as our team is always ready to provide in depth service in regards to advanced production, processing and testing for its clients. Our company successfully passed both IS09001:2015 and IS014001:2015 certifications. Our products were certified by international standards such as RoHS and REACH.
In 2018, Sunny Fore Magnet Company Limited received the Annual High-Tech Industrial Development Award and was officially acknowledged as "Small and Medium-Sized Sci-Tech Enterprise" by the Ministry of Science and Technology of China.
Sunny Fore Magnet will continue to follow our customer-oriented, quality first, efficient and innovative company culture, and support our valued customers with highly competitive products.
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.
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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.