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磁铁的力量：它们如何影响我们的生活

磁铁的力量虽然看起来很小，但在我们的生活中起着至关重要的作用。它以一种无声而坚定的方式影响着我们的日常生活和工作。

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cobalt magnet Magnetic energy is large, stubborn, reliable, and high temperature resistant. It is the second -generation product of 钕 Iron Boron Magnetic Steel,： Cobalt magnet parameters:Maximum magnetic accumulation: (BHMAX)160-150 KJ/M3 (15-35 mgoe)Maximum work temperature (TEMP. TW)250-350Internal and Correction (HCJ)Ka/mMagnetic Stubborn Power -HCB650-870 (ka/m), 4-12 (KOE)Remaining Magnetic-BR8-12 (kgs), 0.8-1.2 (t)Reversable temperature coefficient (br)-0.04 ----0.01: 12

2023-06

Features of Samarium–cobalt magnet The Samarium–cobalt magnet is easy to peel. When handling them, goggles must be worn.Hitting magnets together may cause them to shatter, which may lead to potential hazards.Samarium cobalt manufacturing is made by a process called sintering, which involves sintering all materials, and internal cracks are highly likely to occur. Magnets do not have mechanical integrity and only have the function of preparing magnetic fields. Therefore, it is necessary to design special mechanical systems to give the overall system sufficient mechanical reliabilityVery good coercivity.Good temperature stability (maximum operating temperature from 250 to 550 ℃, Curie temperature from 700 to 800 ℃).The price is expensive and susceptible to price fluctuations (cobalt market price sensitivity).: 09

2023-06

Advantages of magnetic effect Compared with Beijing, Shanghai and other big cities, these cities have a relatively low Cost of living, a relatively stable and comfortable life, and many development opportunities and large space, which can also better realize personal value. College students believe that although there are many opportunities in first tier cities, human resources are also relatively concentrated and competition is fierce. The personal development prospects are not clear. Especially with the further expansion of urbanization towards second and third tier cities, these cities have shown enormous potential in terms of economic development speed, wage levels, and personal development space.In fact, since 2004, China's second and third tier cities have gradually shown a strong "magnet effect" in the job market with their good development prospects, work environment, and living conditions, attracting college graduates and senior talents. With the development of society and the improvement of the overal: 09

2023-06

magnet effect For a long time, first tier cities such as Beijing, Shanghai, Guangzhou, and Shenzhen in China have been the preferred destinations for college students' employment. However, in recent years, with the rapid rise of housing prices in first tier cities, the increase in job competitiveness, and the relatively low treatment, second and third tier cities have gradually shown a strong "magnet effect" in the employment market with their good development prospects, relatively elegant and comfortable working environment, and relatively relaxed living conditions, attracting college graduates and senior talents. In November 2010, according to an online survey, more than half of the surveyed white-collar workers began considering finding a comfortable life in other less stressful cities.Among the respondents who have lived in the first tier cities for more than three years, 55% said they would choose to leave in the next few years, mainly because of the high housing prices and the Cost of livi: 09

2023-06

Samarium–cobalt magnet Samarium–cobalt magnet is a kind of Rare-earth magnet. It is a kind of magnetic tool material made of samarium, cobalt and other metal rare earth materials through proportioning, melting into alloy, crushing, molding and sintering. It has high magnetic energy product, extremely low temperature coefficient, and the maximum operating temperature can reach 350 ℃. Negative temperature is unlimited. When the operating temperature is above 180 ℃, its maximum magnetic energy product (BHmax) The coercivity, temperature stability, and chemical stability all exceed those of neodymium iron boron permanent magnet materials. Has strong corrosion resistance and oxidation resistance; So it is widely used in aerospace, national defense and military industry, microwave devices, communication, medical equipment, instruments, various magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes, etc. The maximum magnetic energy product (BHmax) of Samarium–cobalt magnet ranges from: 09

2023-06

Seismic magnet A method of using magnets to make a simple "earthquake predictor" has recently been circulating online - hanging a magnet can predict a major earthquake in advance? Recently, a method for predicting earthquakes has begun to circulate online - hanging a magnet that adsorbs iron blocks at a high altitude. Before an earthquake, the Earth's magnetic field will change, and the magnet will not be able to catch the iron block. The sound of the iron block falling can serve as a warning. Many netizens will see this message on QQ groups: according to international organizations' predictions, the Earth will enter an earthquake year this year. Here, we recommend a method for earthquake prediction to friends: hang a magnet with a rope at a high place, facing the floor tile or an iron basin, and stick a large iron block on the magnet. Before an earthquake, the Earth's magnetic field undergoes drastic changes, causing the magnet to lose its magnetism, causing iron blocks to fall off and l: 07

2023-06

Single sided magnet The magnetic refraction of a single sided magnet is similar to the refraction of signals by a satellite pot or the refraction of light by a flashlight pot. Its refractive effect is mainly determined by the following three aspects: 1. Material selection and thickness, as well as the distance between the magnet and the material. Pure iron sheet is prone to magnetic leakage, and after special treatment, its refraction will be enhanced. However, a 100% shielding material has not yet been developed, but the effectiveness of materials made by different manufacturers also varies. 2. Angle: According to the principle of refraction, curved materials have the best effect, while right angle materials have a greater refractive loss. 3. Space: Magnetic lines of force in the air are like mobile phone signals, requiring space to refract them. If the flashlight lamp pot is completely wrapped around the lamp, the use effect will definitely not be good, because a large amount of light refraction is lost: 07

2023-06

The difference between ferrite magnets and neodymium iron boron magnets Ferrite magnets are metal oxides with ferromagnetism. In terms of electrical properties, the resistivity of ferrite is much higher than that of metal and alloy magnetic materials, and it also has higher dielectric properties. The magnetic properties of ferrite also exhibit high permeability at high frequencies. Therefore, ferrite has become a widely used non-metallic magnetic material in the high-frequency weak current field. It belongs to non-metallic magnetic materials and is a composite oxide (or ferrite) of magnetic iron oxide and one or more other metal oxides. Magnetic force is usually between 800 and 1000 Gauss and is often used in instruments such as speakers and speakers. [3]The advantages of neodymium iron boron magnets are high cost-effectiveness and good mechanical properties; The disadvantage lies in the low Curie temperature point, poor temperature characteristics, and easy pulverization corrosion. It must be improved by adjusting its chemical composition and adopting sur: 07

2023-06

ferrite magnet Produced using powder metallurgy method, with low residual magnetism and low recovery magnetic permeability. The magnetic circuit structure has high coercivity and strong resistance to demagnetization, making it particularly suitable for dynamic working conditions. The material is hard and brittle, and can be used for cutting processing with emery tools. The main raw material is oxide, so it is not easy to corrode. Working temperature: -40 ℃ to+200 ℃.Ferrite magnets can be further divided into anisotropy (anisotropy) and isotropy (isotropy). The magnetic properties of isotropic sintered ferrite permanent magnet materials are weak, but they can be magnetized in different directions of the magnet; Heterogeneous sintered ferrite permanent magnet materials have strong magnetic properties, but can only be magnetized along the predetermined magnetization direction of the magnet.In the actual production of ferrite magnets, raw materials with good chemical composition may not necessarily obtai: 07

2023-06

Liquid magnet In mechanical manufacturing, the seal of the shaft and the body usually uses oily seal of rubber or other elastic materials. This structure has a short life span and poor reliability. It is even more unsuitable for occasions with radioactivity, corrosion, toxic and friction. However, as long as there are several drops of iron magnetic liquids between the shaft and the body, keep them there and then use a ring magnet to magnetize it, which becomes a liquid magnet seal.The liquid magnet seal completely eliminates the contact between the shaft and the body, which greatly reduces friction. At the same time, because the consumption of the iron magnetic liquid is very small, it can work and reliable for a long time. If you use it to seal the vacuum device, it can keep the vacuum of 10 billion mm Hg, which can be described as seamless. All mechanical devices use lubricants to reduce friction. If the iron magnetic liquid lubricating oil is used, the common mechanical "swimming" can be avoided: 07

2023-06

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