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Tiếng ViệtDon't worry if you don't know which magnet you need for your motor project. Just tell us your applied industry, product performance parameters, size and quantity, we will recommend the most suitable product for you with our rich experience.
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Neodymium Iron Boron (NdFeB) magnets, also known as rare earth magnets, are widely used in various industries, including acoustics. They are known for their exceptional magnetic properties and high coercivity. NdFeB magnets offer powerful magnetic fields in small sizes making them ideal for use in acoustic applications where space is limited. This article will provide an overview of the application of NdFeB magnets in acoustics, including their shape, size, tolerance, performance, coating requirements, and market prospects in Vietnam and India. Additionally, we will analyze the manufacturing advantages of Zhejiang Zhongke Magnetic Industry Co., Ltd.
+86-15857968349
NdFeB Magnets in Acoustic Applications:
The acoustics industry employs NdFeB magnets in various applications, including speakers, microphones, hearing aids, and headphones. NdFeB magnets are also used in audio equipment and musical instruments. Their unique properties, including high magnetic field strength and high coercivity, make them ideal for many acoustic applications.
Don't worry if you don't know which magnet you need for your motor project. Just tell us your applied industry, product performance parameters, size and quantity, we will recommend the most suitable product for you with our rich experience.
With a strong engineer team and professional production lines, Zhongke can design and produce magnet in all shapes according to your needs.
If you are not sure about the performance parameters of the product, you can send us a sample, we will do a professional test, determine the performance parameters and issue a report for your reference.
Exclusive customer service 7x24 hours to get professional help, make an appointment with a professional technical engineer to get a comprehensive solution.
Publicly traded listed magnet company in China. Our magnet supplied to many large, medium-scale customers including SAMSUNG, Nidec, Xiaomi, GREE, Midea, WOLONG, amazon, etc. We manufacture type of Ferrite Magnet and Neodymium(NdFeB) Magnet for electric motor, widely used in the field of new generation consumer electronics and energy-saving home appliances.
Just tell us your applied industry, product performance parameters, quantity and size, we will recommend the most suitable magnet for you.
Shape, Size, and Tolerance:
NdFeB magnets utilized in acoustic applications are available in a range of shapes and sizes to fit different requirements. The most commonly used shape is a cylindrical shape with a diameter of 3mm to 40mm and thickness of 1mm to 30mm. NdFeB magnets used in headphones are usually small, with a diameter of less than 10mm. Meanwhile, speakers use larger magnets, usually with diameters of 10mm to 40mm. NdFeB magnets used in microphones are typically smaller than those used in speakers and usually have a diameter of 3mm or less. NdFeB magnets for acoustic applications require high tolerance levels to meet specific requirements, and the tolerance level ranges from +/-0.05mm to +/-0.1mm.
Performance:
NdFeB magnets used in acoustic applications are required to have excellent magnetic properties. These include a high maximum energy product, a high coercive force, and a high magnetic flux density. The maximum energy product for NdFeB magnets used in acoustic applications ranges from 32MGOe to 55MGOe. The coercivity ranges from 11,000 Oe to 14,000 Oe. The magnetic flux density ranges from 12,000 G to 15,000 G.
Coating Requirements:
NdFeB magnets are coated to prevent corrosion, especially when exposed to humid environments. The coating also provides a layer of protection against damage during handling and installation. Common coating materials used for NdFeB magnets include nickel, zinc, gold, and epoxy. Zinc and nickel coating are the most commonly used due to their low cost and high level of protection.
Market Prospects in Vietnam and India:
The markets for NdFeB magnets in Vietnam and India have experienced steady growth over the years. The two countries have significant potential in the acoustics industry, and as such, there is an increasing demand for NdFeB magnets in these markets. In Vietnam, the demand for NdFeB magnets is driven by the automotive industry, where they are used in electric cars, power windows, and motors. The market in India is experiencing growth due to the increased application of NdFeB magnets in consumer electronics, aerospace, and the automotive industry.
Manufacturing Advantages of Zhejiang Zhongke Magnetic Industry Co., Ltd:
Zhejiang Zhongke Magnetic Industry Co., Ltd. is a leading NdFeB magnet manufacturer in China. The company has significant experience in the production of NdFeB magnets for various industries, including acoustics. The company's manufacturing plant is equipped with modern facilities, including advanced production equipment, testing machines, and inspection stations. Using advanced technology, the company produces high-quality NdFeB magnets with a high level of precision and consistency. The company has developed a strict quality control system that ensures the continuous improvement of its products' quality. The high-quality NdFeB magnets produced by Zhejiang Zhongke Magnetic Industry Co., Ltd. have earned the trust of customers around the world.
NdFeB magnets have a wide range of applications in the acoustics industry, including speakers, microphones, hearing aids, and headphones. Their unique properties, including high magnetic field strength and high coercivity, make them ideal for use in acoustic applications. NdFeB magnets used in acoustics come in various shapes, sizes, and tolerance levels, and the market prospects in Vietnam and India are promising. Zhejiang Zhongke Magnetic Industry Co., Ltd., with its advanced technology and manufacturing capabilities, offers high-quality NdFeB magnets that meet the needs of customers in the acoustics industry and beyond.
Zhongke is committed to becoming a world-renowned supplier of permanent magnet material application solutions in the field of new generation consumer electronics and energy-saving home appliances.
The company's current production process of permanent ferrite magnets is as follows: the purchased pre-fired materials are mixed according to their own formula and ingredients, and after being ball milled by a ball mill, ferrite is produced through steps such as precipitation, wet pressing, sintering, and grinding. Body magnetic tiles, ferrite magnets and other finished products. The specific production process flow chart is as follows:
The strontium ferrite calcined material (the main component is SrFe12O19) is mixed with calcium carbonate, silicon dioxide, strontium carbonate, lanthanum oxide, cobalt oxide and other ingredients according to the formula ratio.
The raw materials are added with water and pulverized by a ball mill to form a slurry, which is placed in a sedimentation tower for precipitation.
The dehydrated material formed by precipitation is made into a green body through an automatic press in a normal air environment.
The raw body is sintered at high temperature into a mature body through a wet-pressed magnetic tile electric-fired roller kiln or a wet-pressed magnetic steel gas-fired roller kiln.
The cooked blank is processed by a fully automatic grinding machine processing line to form a finished product.
The magnetic properties, appearance, size and other indicators of the magnets are inspected, packed and put into storage.
The company has applied and improved a number of advanced technologies in the industry, such as high-performance ferrite slurry stabilization technology and secondary ball milling batching technology, which has solved the quantitative problem of material added in the preparation process. And we use double coupling dispersion and fine grinding to overcome the problems of slurry agglomeration and particle size distribution consistency. The performance of the slurry obtained in the ball milling process is more stable, which reduces the unit operating time of the ball milling equipment, improves product quality, and reduces production costs.
The company uses a unique new green release agent independently developed to prepare magnetic tiles. The new green release agent is an organic combination of microbial technology and surface release treatment technology, which can degrade oil molecules, reduce the oil content of the release agent, and restore the surface. active lipophilic factor. The product is combined with the surface release process, and the release effect of the magnetic tile is improved through a new release agent, and the surface finish of the blank is improved. The demoulding technology has the characteristics of simple preparation method and convenient application, and improves production efficiency.
By transforming the sintering preheating system equipment, the company reduces the water content of the sintered green body in the kiln, greatly reduces the waste rate caused by factors such as cracking and lack of oxygen during sintering, and improves the sintering density and mechanical strength of the product. Obtain good microstructure and magnet properties. The company has also realized the sintering base temperature that products with different performances can adapt to through formula adjustment. Products with different specifications, sizes and performances can be co-fired at the same temperature, which significantly improves the production efficiency of the sintering process. In addition, in terms of veneer loading and billet loading, the company has adopted a bulk stacking method that conforms to the company's product features of small shape and light weight after many tests, realizing heavy veneer loading, good sintering atmosphere, and high sintering yield. good effect.
By optimizing the parameters of grinding machines and other processing equipment and improving the process technology, the company has improved the consistency of product thickness to ≤0.02MM within L30MM and ≤0.04MM within L50MM, and has mastered the technology of three-phase motor magnets produced by grinding tooling. Breakthroughs have been made in technical difficulties in the industry, such as product precision and stable equipment performance, and certain innovations have been achieved in technology and equipment.
The company's magnetic tile products are developing in the direction of high efficiency, low consumables, and low energy consumption. For example, through atomic substitution and compound doping, the rare earth-free ZK-5B high-performance motor magnetic tile independently developed by the company reduces the coagulation of magnetic powder, improves the orientation effect, improves the material performance and reduces the production cost by using strong magnetic field to suppress and adding a double dispersant.
WeChat/Zalo/whatsApp: +86-15857968349(Jerry Ma)
Email: mahy@dymagnet.com
No. 28, Changsheng Road, Hengdian Town, Dongyang City, Jinhua City, Zhejiang, China.
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