How are ceramic ferrite magnets made? What are the processes? Today, the odd magnet manufacturer will introduce to you in detail to satisfy your curiosity.
The picture below is the flow chart of the production process of ferrite magnets
The following is the process introduction;
Weighing and Mixing
Ferrite raw materials include main raw materials, additives and fluxes Fe2O3, BaCO3, SrCO3 and CaCO3 are the main raw materials of ferrite. The weighing process needs to strictly follow the formula, otherwise the ideal magnetic properties cannot be obtained. After the raw materials are weighed, they are mixed in special equipment. Ingredient uniformity is based on the mixing process. There are many factors that affect the uniformity of a mixture's components.
Granulation
In order to ensure the smooth progress of the solid phase reaction process, the mixture needs to be granulated before pre-sintering. During the granulation process, the solution will be sprayed into the mixture. The particle size of the pellet material has an effect on the burn-in time.
Pre-sintered
The purpose of pre-sintering is to fully ensure the solid-phase reaction of the raw materials. After pre-sintering, most of the raw materials will be converted into ferrite phase. The pre-sintering process will also improve deformation, shrinkage and density. The pre-sintered powder can be used as a raw material for sintered magnets, bonded magnets and wave absorbing materials. Now most ferrite manufacturers directly purchase the pre-sintered powder.
Ball milling
In this step, the pre-sintered material will be pulverized into a fine powder. The crushing process will be completed by the ball mill equipment. The grinding medium is steel balls and water.
Forming
On the basis of traditional classification methods, ferrite magnets are divided into two categories: isotropic and anisotropic. Ferrite molding methods are also divided into two types: wet method and dry method. The molding process is highly technically intensive.
Sintering
Like other types of sintered magnets, the sintering step is also very important for ferrite magnets. First, the sintering process affects the microstructure of the ferrite, which in turn affects the magnetic properties of the ferrite. Unreasonable sintering parameters can lead to cracks in the magnet. , bubbles and deformations.
Machining
Processing methods of ferrite magnets include grinding, polishing, cutting and punching. It is worth mentioning that because ferrite is an insulating material, magnet manufacturers will use grinding wheels during the cutting step.
Magnetization
Use a special magnetizer to magnetize the ferrite according to customer requirements.
The above is an introduction to the production process of ferrite. The ferrite magnets produced by our company have stable performance and excellent quality. They are mainly used in various sensors, motors, speakers, electrical appliances, and handicrafts. Welcome to consult.
Ferrite related products;
Ferrite magnet article introduction;
Application and Magnetic Properties Comparison of Barium Ferrite and Strontium Ferrite
What is the hardness of ferrite magnet?
What is radial ferrite magnet? Which kinds are there?
How strong is the magnetic field of ferrite magnet? How to calculate?
This is an ultra-small ferrite block magnet, small and thin, with a thickness of only 0.8mm, a length of 3.8mm, and a width of 2mm. It is mainly used for precision electronics, Hall sensors, and is magnetized in the direction of 2. The strong magnetic surface is the length If you are interested in this kind of small ferrite magnets, you can contact us to customize without pressure!...
This is the courage magnet manufacturer to provide you with a anisotropy multi-pole ferrite ring magnet, through the side (radial) 12 pole magnetization, the surface magnetic is about 1050 gauss, its size is 28.4mm outer diameter, 17.5mm inner hole, thickness of 4mm...
This product is a ring-shaped ferrite magnet with an outer diameter of 20mm, an inner diameter of 10mm, and a thickness of 3mm. There is no coating on the outside. The magnetizing method is axial/planar 4 poles and the surface magnetic field strength is about 980gs. If you are interested in this magnet, please contact We provide you with samples, and other specifications are needed. We can also provide you with more magnetic poles....
Sample shot is a small and thin radial neodymium magnet ring, belongs to rare earth magnets, zinc-plated surface, outer diameter 6.5mm, inner hole diameter 3.5mm, thickness 0.5mm, through the diameter of the direction of the magnetization...
You are now seeing this is a non-standard customized sintered ceramic ferrite magnets, thickness 9mm, 14 pieces of a group, made of high grade Y33 grade or more, with strong magnetic strength, widely used in a variety of micro-motors, power tool motors, sports equipment motors...
The magnet is a multipolar Ndfeb magnetic ring, the material is bonded neodymium magnets, there are 12 magnetic poles, using the radial inner diameter magnetization, the use of surface for the inner side, the outer diameter of the ring magnet is 28mm, the inner diameter of 24mm, the height of 10mm, the surface black electrophoresis, the measured surface magnetic field intensity of about 2680 Gauss...
This product is provided by China's neodymium magnet manufacturer, The shape is a circle disk, sintered neodymium material, the magnet diameter of 30mm, thickness of 10mm, axial (thickness) magnetization, nickel plated surface, weight of 8.96g, surface magnetic field strength is greater than 4500 Gaos, tension about 2.8kg,...
This is a medium-sized ring neodymium magnet. The specific material is bonded neodymium iron boron. It is a magnet that needs to be pressed by mold. The size of the magnetic ring is 45.9mm in outer diameter, 41.4mm in inner diameter, and 13mm in height. radial inner diameter magnetization 10 poles, The surface is black epoxy coating. It is mainly used for various permanent magnet DC motors. Brushless motors。...