Magnetic Applications

There are usually 8 types of corrosion phenomena in water pumps: 1. Wear corrosion: refers to the erosion and corrosion of metal surfaces by high-speed fluid. Fluid erosion, wear and corrosion are different from the abrasion caused when the medium contains solid particles. The water pump will produce wear during operation, so we should try our best to use materials with good wear resistance to reduce wear and corrosion. Of course, different materials have different resistance to wear and corrosion. 2. Electrochemical corrosion: Electrochemical corrosion refers to the electrochemical process in which the contact surface of dissimilar metals forms a battery due to the difference in electrode potential between metals, thereby causing corrosion of the anode metal. To prevent electrochemical corrosion, one is to use a sacrificial anode to protect the cathode metal; the other is to use the same metal material for the flow channel of the pump. 3. Intergranular corrosion: Intergranular corrosion is a kind of partial corrosion, which mainly refers to the precipitation of chromium carbide between stainless steel grains. Intergranular corrosion is extremely corrosive to stainless steel materials. Measures to avoid intergranular corrosion are: anneal stainless steel, or use ultra-low carbon stainless steel (C 4. Average corrosion: Average corrosion means that when corrosive liquid contacts the metal surface, uniform chemical corrosion occurs on the entire metal surface. This is a common type of corrosion, and it is also a less harmful type of corrosion. Measures to avoid uniform corrosion are: use appropriate materials (including non-metals) and consider sufficient corrosion margin when designing the water pump. 5. Crevice corrosion: Crevice corrosion is a kind of local corrosion, which refers to the corrosion caused by the partial destruction of the metal passive film due to the decrease in oxygen content and/or the decrease in pH value in the gap after the gap is filled with corrosive liquid. The use of metals with high Cr and M0 contents can avoid or reduce the occurrence of crevice corrosion.   6. Pitting corrosion: Pitting corrosion is a kind of partial corrosion. Due to the partial destruction of the metal passive film, hemispherical pits are rapidly formed in certain areas of the metal surface. This phenomenon is called pitting corrosion. Pitting corrosion is mainly caused by Cl. To avoid pitting corrosion, steel containing M0 (usually 2.5% Mo) can be used, and as the Cl content and temperature increase, the M0 content should also increase accordingly. 7. Stress corrosion: Stress corrosion refers to a kind of partial corrosion caused by the combined action of stress and corrosive environment. The measure to avoid stress corrosion is to use austenitic Cr-Ni steel with high Ni content (Ni; 25% to 30%). 8. Cavitation corrosion: The corrosion caused when cavitation occurs in the pump is called cavitation corrosion. A practical and simple method to prevent cavitation corrosion is to prevent cavitation from occurring. Water pump cavitation cannot be prevented. Cavitation will occur more or less during the operation of the water pump. For those water pumps that often produce cavitation corrosion, anti-cavitation materials can be used to increase their cavitation resistance.

Magnetic drive pumps have established themselves as a cornerstone technology in various industries, particularly those handling hazardous, sensitive, or valuable liquids. Their leak-proof operation, robust design, and versatility make them a compelling choice for experienced engineers and plant managers seeking reliable and efficient fluid transfer solutions. Unveiling the Advantages: Exemplary Leak Prevention: The core strength of magnetic drives lies in their contactless power transmission. Unlike conventional pumps with mechanical seals, magnetic pumps utilize the attraction and repulsion of magnets to drive the impeller, eliminating the inherent leakage risk associated with shaft seals. This translates to safer handling of toxic, volatile, or environmentally sensitive fluids, minimizing regulatory concerns and potential environmental impact. Enhanced Efficiency and Durability: Modern magnetic pumps boast efficiencies comparable to their standard centrifugal counterparts. Furthermore, the absence of wear-prone shaft seals significantly reduces maintenance requirements and extends operational lifespan. This translates to optimized energy consumption, lower operating costs, and improved equipment uptime. Unmatched Material Compatibility: The magnetic drive design allows for the construction of pump components from exotic materials like titanium, zirconium, and fluoropolymers. This broadens the application spectrum of magnetic pumps to encompass highly corrosive, abrasive, or ultra-pure liquids that would quickly degrade conventional pump materials. Operational Versatility: Magnetic pumps excel in handling diverse liquids across a wide range of temperatures, viscosities, and pressures. From cryogenic applications to high-temperature molten salts, these pumps demonstrate remarkable adaptability, catering to a multitude of industry-specific needs. Addressing the Considerations: While magnetic drives offer undeniable advantages, experienced engineers acknowledge their inherent limitations: Higher Initial Investment: Compared to standard centrifugal pumps, magnetic drives typically carry a higher upfront cost. However, this is often offset by their extended lifespans, reduced maintenance requirements, and operational advantages over the long term. Flow Rate Limitations: Magnetic pumps may not be ideal for applications demanding extremely low or high flow rates. Careful evaluation of specific needs is crucial to ensure optimal pump selection. Solid Particle Sensitivity: The isolation sleeve, a critical component in magnetic drives, can be susceptible to wear and tear from abrasive or large solid particles in the pumped liquid. Pre-filtration or specific pump configurations might be necessary in such scenarios. Temperature Constraints: Permanent magnets employed in magnetic drives have inherent temperature limitations. High-temperature applications may necessitate specialized designs or external cooling systems, adding complexity and potentially increased cost. Optimizing Performance and Longevity: To maximize the potential of your magnetic drive pump, consider these expert tips: Precise Installation and Commissioning: Proper alignment and adherence to manufacturer specifications during installation are paramount for smooth operation and extended pump life. Preventative Maintenance: Regular inspections, oil level monitoring, and adherence to recommended maintenance schedules ensure optimal performance and minimize downtime. Flow Rate Management: Operating within the recommended flow range (typically 70-130% of the rated flow) optimizes efficiency and prevents unnecessary wear and tear. Material Selection: Choosing the right pump materials for your specific liquid and operating conditions is crucial for long-term reliability and safety. Conclusion: Magnetic drive pumps represent a sophisticated and versatile solution for transferring critical liquids in demanding industrial environments. Their inherent leak-proof operation, exceptional material compatibility, and extended lifespans make them a valuable asset for experienced engineers and plant managers seeking to optimize efficiency, safety, and long-term operational costs. By carefully considering their limitations and implementing proper maintenance practices, magnetic drive pumps can deliver exceptional performance and reliability in even the most challenging applications.

Application of Nanocrystalline Soft Magnetic Materials in Wireless Charging 1. What is a nanocrystalline? First of all, we have to understand what is amorphous? During the preparation of the metal, if it is cooled with an ultra-fast cooling rate during its solidification process, the atoms are in a disorderly state at this time, and they will be instantly frozen before they can be rearranged. The structure formed at this time is Amorphous. Nanocrystalline is based on the amorphous state, through a special heat treatment, let it form crystal nuclei and grow. However, it is necessary to control the size of the crystal grains at the nanometer level, and do not form complete crystals. The structure formed at this time is nanocrystalline. 2. Advantages of nanocrystalline Compared with cobalt-based amorphous and ferrite, nanocrystalline has a high saturation magnetic inductance and can reduce the volume of magnetic devices. High magnetic permeability, small loss, and small coercive force can reduce the loss of magnetic devices. Therefore, nanocrystalline are the best soft magnetic materials in high-frequency power electronics applications. 3. Characteristics of nanocrystalline The frequency of the current wireless charging "Qi standard" is between 100-200k. At this frequency, the magnetic permeability of the nanocrystalline is very close to that of the cobalt-based amorphous, which is significantly higher than that of the iron-based amorphous and ferrite . The loss is just the opposite, significantly lower than iron-based amorphous and ferrite. Nanocrystalline also have advantages in temperature applications. Not only are nanocrystalline wider in application temperature than cobalt-based amorphous and ferrite, but in the range of -40℃-120℃, the stability of nanocrystalline is also significantly better than ferrite. Nanocrystalline also have obvious advantages in the design of magnetic materials. Nanocrystalline can be oriented to control permeability and anti-saturation magnetic fields. The magnetic permeability of nanocrystalline can be adjusted freely within 1000-30000. The design of the magnetic material requires that the magnetic saturation should not be reached under a specific working current. Once the magnetic saturation is reached, it will stop working. The nanocrystalline adjustable anti-saturation magnetic field can reach 30~350A/m, making the application range of wireless charging more width. 4. Application of nanocrystalline soft magnetic materials in wireless charging Wireless charging has become popular in mobile phones, and there are many products in the wearable field. In the future, wireless charging will be popularized in homes, offices, public places, travel tools, and transportation. Wireless power transmission (WPT): The structure of wireless charging for smart phones and smart wearables (small power) is similar to a transformer. It consists of a transmitter and a receiver. The transmitter and the receiver are both made of coils and magnetic materials. The magnetic materials are different. The choices are ferrite, amorphous, nanocrystalline, etc. 5. The role of soft magnetic shielding materials in wireless charging Magnetic shielding: Provide a low-impedance path for the magnetic flux, reduce the magnetic field lines radiating outward, reduce the impact on the surrounding metal objects, and prevent eddy currents and signal interference. Permeability reduction: improve the coupling coefficient, improve the magnetoelectric conversion efficiency, use fewer turns to achieve a higher inductance coil, reduce the coil resistance, and reduce the efficiency reduction caused by heating (the more turns, the higher the resistance) . 6. Comparison of charging efficiency of nanocrystalline magnetic permeable sheets Simulating real scenes, conducting comparative tests under the same conditions, using different thickness nanocrystalline magnetic sheets and ferrite with different permeability and thickness to compare the charging efficiency. As the thickness increases, the charging efficiency continues to increase, but the nanocrystalline is not as thick as possible, basically saturated by 0.1mm, therefore, when designing a wireless charging module, the nanocrystalline magnetic permeable sheet does not need to be too thick, it will Increase material cost. The law of ferrite is similar to that of nanocrystals. The higher the magnetic permeability, the higher the charging efficiency, the thicker the thickness, and the higher the charging efficiency. However, under the same charging efficiency, the thickness of the nanocrystalline magnetic sheet is only the ferrite. half.

How does the magnetic temperature switch work in the rice cooker RICE COOKER A rice cooker is an electrical machine which is use purposely for cooking rice.A simple rice cooker monitors  the boiling point of water and take an action based on a set point HOW IT WORKS A simple rice cooker has a thermal fuse,a heating elements,two temperature sensors,and two light indicators for cook and warm) MAGNETIC TEMPERATURE SWITCH  Magnetic temperature switch is use in the cook stage of the rice cooker The user press the switch to the cook state and the magnet hold it in that state until the temperature reaches or exceed the set boiling point where the magnet then demagnetize at that temperature and open the circuit thus returning the switch state back to warm Magnetic temperature switch is use in the warm stage of the rice cooker In the warm state,the thermistor (positive  temperature coefficient meaning it's resistance increases with temperature ) monitors the temperature of the heater and if it is high, its resistance increases thereby decreasing the  amount of current flowing through the heater hence the heat reduces and vice versa Disclaimer: This post is for the free exchange of ideas and commentary regarding issues of interet to those in the field of magnetic or or other industries. If the post infringes your legal rights, please contact us with proof of ownership, we will delete it in time

China's rare earth resources are abundant and diverse. The rare earth elements include 17 elements such as lanthanum, cerium, lanthanum and cerium. In recent years, rare earths have not only been widely used in agriculture, science and technology, national defense and other sectors, but also show their encouraging application prospects in the medical field.The epidemiological survey results showed that the incidence of tumors in rare earth workers was significantly lower than that in the control group. Animal experiments also found that mice were observed to have a significant inhibitory effect on transplanted sarcoma after long-term administration of rare earth. Further research has also confirmed that rare earth elements can inhibit the growth and proliferation of various human tumor cell lines (such as breast cancer, lung cancer, stomach cancer, leukemia, etc.), and on the other hand, promote the growth of normal cells, which is applied to rare earths. Tumor treatment provides a certain experimental basis.So what is the mechanism of rare earth anti-cancer? Most studies believe that there are mainly the following aspects:1 Rare earth has strong affinity for cancer tissues, and rare earth combined with cancer tissue can interfere with the metabolism of cancer cells and the synthesis of DNA (deoxyribonucleic acid);2 rare earth like a "scissor", can cut the nucleic acid chain, causing it to hydrolyze and break;2 rare earth can selectively destroy the ultrastructure of cells inside malignant or cancerous cells;4 Rare earth can inhibit the expression of oncogenes, and at the same time enhance the expression of tumor suppressor genes.Although studies on the anti-tumor mechanism of rare earths are still under investigation, statistics show that radioactive rare earths account for half of the radioactive elements used to treat cancer. In addition, medical researchers are currently working on the use of rare earths for the treatment of AIDS. Prof. Adachio, an Osaka university, spoke highly of the work and prospects: “Expanding the function of rare earths into the biological field, such as the use of rare earth catalysts to cut off the genes of AIDS and cancer in medicine, will be the largest human Gospel." Visible, in terms of AIDS and cancer, the shock of rare earths will greatly exceed the rare earth oxide high-temperature superconductors that appeared in previous years. It is believed that in the process of conquering tumors and AIDS in the 21st century, rare earths - this anti-cancer star will shine.

There are many substances in the world that change under the action of a powerful magnetic field. This phenomenon is called "magnetization." Magnetization technology is widely used to magnetize various fluids. The rare earth permanent magnet material NdFeB is the most magnetic permanent magnet material in the world, and its appearance has greatly promoted the development of fluid magnetization processing technology.Water is our most closely related fluid. It is magnetized into "magnetized water" under the action of a strong magnetic field. A strong magnetic water processor made of NdFeB permanent magnets can be effectively used for magnetization of water. The magnetic water heater is usually made of a stainless steel casing with a set of NdFeB magnets with N poles and S poles opposite to generate a strong magnetic field. The length and angle of the water molecules are changed when the water is cut by the magnetic lines in the vertical direction through the intermediate channel. Subtle changes can occur, greatly increasing the activity of the water.In daily life, we often see the scaling of water. This is due to the dissolution of calcium and magnesium bicarbonate in water. When heated, calcium and magnesium carbonate precipitates. The harder the water, the more scale. . Scale not only seriously affects heat transfer, reduces heat transfer efficiency of various heat exchangers, increases energy consumption, and causes blockage of pipes. To this end, many industrial and domestic water needs to be softened in advance. The commonly used methods are ion exchange and dosing chemical softening, which are time consuming and labor intensive. The use of NdFeB magnetic water processor can often replace the above-mentioned softening treatment method, and can also play the role of anti-scaling and descaling.The water cooling system of the Institute of Electronics of the Chinese Academy of Sciences (Beijing) used to use the ion exchange method, which not only consumes materials, but also has special personnel to operate and manage. Later, it was changed to NdFeB magnetic water processor (manufactured by Beijing Sanhuan New Materials Co., Ltd.), which does not consume electricity or special personnel. It only needs to change the circulating water once a year. The system can be used for cooling equipment in the whole research institute. From 1991 to today, it has maintained good anti-scaling and anti-algae effects.Many large buildings are now equipped with central air conditioners. Due to the high operating temperature of the compressors, it is necessary to quickly remove the heat with flowing cooling water. If tap water is used for cooling, scaling will occur, resulting in reduced heat exchange efficiency and reduced cooling capacity. The use of neodymium iron boron magnetic magnetic water heater also solves the scaling problem of water cooling system. The NdFeB magnetic magnetic water heater is also used in the heating water supply system of the central air conditioner, the cold storage water supply system, and the heat exchanger for domestic hot water.Magnetized water can also prevent "scaling" in the human body, and often drink magnetized water, which has certain effects on preventing and treating stones in the urinary system and improving digestive function. Therefore, many mineral water pots and magnetic water cups also use NdFeB permanent magnets. The water is magnetized. Due to the high activity of magnetized water, good solubility and permeability, the use of rare earth permanent magnet magnetized water for agriculture, animal husbandry, forestry, and poultry and livestock breeding also has obvious effects of increasing production and income.NdFeB permanent magnet magnetization technology is also used in the wine industry. Inner Mongolia Wulanhaote Brewery adopts magnetization treatment in brewing liquor, which plays the role of aging and ripening, which can shorten the aging time and improve the quality of liquor. The white wine produced by magnetization has a sweet and sweet taste. It has been tested by medical experts and moderately consumed. It also has the effects of lowering blood fat and blood sugar.NdFeB permanent magnets are also used for magnetization of oil and gas fluids. In the oil exploitation, there is also "fouling" on the wall of the oil production pipe, that is, the phenomenon of wax formation occurs, which is easy to block the oil production pipe. After the installation of the NdFeB rare earth permanent magnet anti-wax device, the wax formation can be obviously reduced, the cleaning cycle is extended, and the heavy wax washing operation is reduced, thereby greatly improving the oil recovery efficiency.NdFeB permanent magnet magnetization technology is also used for the magnetization of fuel gas. The car is equipped with a neodymium-iron-boron permanent magnet magnetized fuel-saving device. The magnetization pretreatment of the fuel can make the fuel burn more fully, and the average fuel economy of gasoline and diesel can reach 5%-8%, and the carbon monoxide in the exhaust gas can be reduced. The content of harmful gases such as hydrocarbons is both energy efficient and environmentally friendly. Based on the same principle, an energy-saving magnetizer for rare earth permanent magnet combustion has been developed, which is used for daily cooking and cooking, and has the dual effects of energy saving and environmental protection.The emergence of "a generation of magnetic king" NdFeB rare earth permanent magnet materials has made a quantum leap in fluid magnetization technology. Hangzhou Vector Magnets Col, Ltd. is one of the major NdFeB permanent magnet materials manufacturers in China, and is able to provide patented NdFeB magnets various specifications according to different magnetization technologies. With the continuous development of industrial and agricultural production, rare earth permanent magnet NdFeB magnetization technology will be more and more widely used.

If a magnet must be fastened to a device, you can use either mechanical means or adhesives to secure the magnet in place. Adhesives are often used to secure magnets in place. If magnets are being adhered to uneven surfaces, an adhesive with plenty of "body" is required so that it will conform to the uneven surface. Hot glues have been found to work well for adhering magnets to ceramics, wood, cloth, and other materials. For magnets being adhered to metal, "super glues" can be used very effectively.Integrated Magnetics can supply flexible magnets with adhesives already attached; simply peel off the liner and attach the magnet to your product.Contact us, send us a request for quote for a specialty order, or visit www.magnetshop.com for large stock inventory available for on-line purchase.*As with all adhesive applications, it is very important to ensure that all surfaces being bonded are clean and dry before bonding.