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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.
Ferrite magnets, also known as ceramic magnets, are used extensively in many applications due to their relatively low cost, high magnetic performance, and excellent corrosion resistance. Among the various applications, ferrite magnets are widely used in electric motors, especially those driving the washing machines. Will introduce the application of ferrite magnets in the washing machine motor, including the performance, dimensions, temperature resistance, demagnetization resistance, and testing requirements. It also analyses the global market trend of washing machines, especially in the southeast Asian region and India, and highlights the advantages of Zhejiang Zhongke Magnetic Industry Co., Ltd. (Zhongke) in manufacturing ferrite magnets.
+86-15857968349
Application of Ferrite Magnets in the Washing Machine Motor
The electric motor of a washing machine converts electrical energy into mechanical energy and drives the agitator or drum to wash the clothes. Ferrite magnets are essential components of the washing machine motor, providing the magnetic field necessary for the motor to operate.
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.
Performance
The magnetic performance of ferrite magnets for washing machine motors must meet the specific requirements for torque, speed, and energy efficiency. The coercivity of the magnet determines the magnetic field strength, and hence the torque that the motor can produce. The magnet's magnetic remanence determines the speed at which the motor can operate, and the magnetic energy product determines the motor's energy efficiency.Normally will use 9H,9B,12H,12B grade(could refer to below performance data sheet).
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Characteristics Of Ferrite Arc Magnet Under 23℃+/-2℃ |
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Grade |
Residual magnetic flux density(Br) |
Magnetic Coercive Force(Hcb) |
Intrinsic Coercivity (Hcj) |
Maximum Energy Product (BH)max |
Density |
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ZK-12H |
4300±150(Gs) |
4000±150(Oe) |
5200±150(Oe) |
4.6±0.2(MGOe) |
4.9-5.1(g/cm³) |
|
430±15(mT) |
319±12(KA/m) |
414±12(KA/m) |
36.8±1.6(KJ/m³) |
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ZK-12B |
4550±150(Gs) |
4050±150(Oe) |
4550±150(Oe) |
4.7±0.2(MGOe) |
4.9-5.1(g/cm³) |
|
455±15(mT) |
323±12(KA/m) |
362±12(KA/m) |
437.6±1.6(KJ/m³) |
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ZK-9H |
4250±100(Gs) |
3750±150(Oe) |
4650±150(Oe) |
4.1±0.2(MGOe) |
4.9-5.1(g/cm³) |
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425±10(mT) |
298±12(KA/m) |
370±12(KA/m) |
33±1.6(KJ/m³) |
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ZK-9B |
4300±100(Gs) |
3900±150(Oe) |
4300±150(Oe) |
4.4±0.2(MGOe) |
4.9-5.1(g/cm³) |
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430±10(mT) |
311±12(KA/m) |
342±12(KA/m) |
35.2±1.6(KJ/m³) |
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Dimensions
The dimensions of ferrite magnets used in washing machine motors vary according to the motor's power and size. Typically, the magnets are rectangular or ring-shaped, with dimensions ranging from a few millimetres to tens of centimetres.
Temperature Resistance
Ferrite magnets for washing machine motors must withstand high temperatures as they operate at high speeds. The magnets' maximum operating temperature is typically between 200°C and 300°C.
Demagnetization Resistance
Ferrite magnets for washing machine motors must resist demagnetization caused by temperature, mechanical shock, or vibration. The magnets' intrinsic coercivity and their magnetic circuit design determine their demagnetization resistance.
Testing Requirements
To ensure the quality and performance of ferrite magnets used in washing machine motors, various tests must be carried out. The most common test is the magnetic measurement of the remanence, coercivity, and magnetic energy product. Other tests include the demagnetization curve measurement, temperature demagnetization test, and shock and vibration test.
Global Market Trend of Washing Machines
The washing machine market is growing worldwide, driven by rising urbanization, increasing disposable income, and changing lifestyles. According to a report by Statista, the global washing machine market size was valued at USD 51.98 billion in 2018 and is projected to reach USD 80.87 billion by 2025, growing at a CAGR of 6.5% from 2019 to 2025.
In the Southeast Asian region, the washing machine market is expected to grow at a CAGR of 5.2% from 2020 to 2025, driven by increasing consumer demand, expanding manufacturing base, and government initiatives to develop the manufacturing sector. According to another report by Statista, the washing machine market size in India was valued at USD 1.64 billion in 2020 and is expected to grow at a CAGR of 5.8% from 2021 to 2028, driven by increasing urbanization, rising middle-class population, and growing awareness of hygiene and cleanliness.
Advantages of Zhongke in Manufacturing Ferrite Magnets
Zhongke is a leading manufacturer of ferrite magnets in China, with a strong focus on technology innovation, quality control, and customer satisfaction. Zhongke's ferrite magnets for washing machine motors have the following advantages:
1. High magnetic performance: Zhongke's ferrite magnets have high coercivity and magnetic energy product, ensuring the motor's torque, speed, and energy efficiency.
2. Consistent quality: Zhongke uses advanced production technology and quality management system to ensure consistent and reliable quality of its ferrite magnets.
3. Customization capability: Zhongke can customize the dimensions, shapes, and magnetic properties of its ferrite magnets to meet customer-specific requirements.
4. Competitive pricing: Zhongke offers competitive pricing for its ferrite magnets without compromising on quality and performance.
Ferrite magnets are essential components of washing machine motors, providing the magnetic field necessary for the motor to operate. The magnetic performance, dimensions, temperature resistance, demagnetization resistance, and testing requirements of ferrite magnets for washing machine motors must meet specific requirements. The global washing machine market is growing, especially in the southeast Asian region and India. Zhongke has several advantages in manufacturing ferrite magnets for washing machine motors, including high magnetic performance, consistent quality, customization capability, and competitive pricing.
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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