Alnico magnets can be made from a variety of materials such as cobalt, nickel, aluminum and sometimes even titanium and copper. Alnico is a hard and brittle material that can sometimes be difficult to rework. You can have alnico manufactured in a number of shapes such as cylinders, horseshoes, blocks, discs, rings and rods. Alnico magnets have relatively high energies and high residual inductions and are manufactured through casting or sintering processes. The process of casting involves pouring a molten metal alloy into a mold and processing it through various heat-treated cycles. Sintering is a process used in manufacturing magnets when two main materials are combined and then melted down to the point where they stick to each other. When sintering alnico a fine alnico powder is usually compacted using a press. Alnico magnets provide many benefits. In addition to being affordable and strong they can also resist extremely high temperatures and they are able to keep their magnetic qualities for a long period of time. Overall, alnico magnets are a good choice for a variety of industrial and consumer applications. Read More http://www.jobmastermagnets.com/electromagnets.aspx.
Ferrite magnets are often made from a chemical compound that contains iron oxide and ceramic. Ceramic ferrite magnets are made using a process of pressing and sintering ceramic and magnetic powders. When sintering, which is a process often used in manufacturing magnets, two main materials are combined using heat until they stick together. Ferrite magnets are described as being hard and brittle.Although the terms hard and soft are misleading ceramic ferrite magnets are categorized as either being a hard ferrite or a soft ferrite. The terms hard and soft ferrite are misleading because the difference between these two magnets does not lie in the density of the material but instead in the intensity of the magnetic field. The difference between hard and soft ferrite magnets is that hard ferrite magnets need a more intensive magnetic field to de-magnetize. Ceramic magnets are unique because they can be applied to flexible fabrics, making them ideal for decorative purposes, crafts and other usages in the home, school or work place. Ceramic ferrite magnets can be used in many different applications and for numerous uses. Check this Jobmaster Magnet.
One of the rare earth magnets is neodymium, which is made from neodymium which is a chemical element with atomic number 60 and symbol Nd. Present in the ore minerals monazite and bastnasite, neodymium is a silvery, soft metal that easily tarnishes. Their performance in extreme conditions and strength make neodymium magnets preferred in some applications. Consider neodymium magnets in situations where you need to use maximum energy and work in service temperatures up to 150 degrees Celsius. Neodymium magnets are considerably stronger than ceramic ferrite or alnico magnets. There are many advantages to using neodymium magnets and products made from neodymium. Although neodymium is strong, affordable, popular and can withstand cold temperatures it also has some cons. Unlike other rare earth magnets, such as samarium-cobalt, neodymium magnets have a low Curie temperature and as a result can't perform in high temperatures, which means that it could lose its magnetism in environments that are too hot. Neodymium does perform well in cold temperatures. Neodymium is less durable than other rare earth magnets and must have surface treatments applied to prevent scratching. Since neodymium is brittle and can form cracks due to corrosion manufacturers often apply treatments of tin, gold, nickel or zinc platings or coatings to the surface to protect it. With a good plating or coating the problem of oxidation is minimized..
There are many uses in a variety of industries for flexible magnetic strips. Magnets use the force of magnetism to attract or pull an object towards or way from it. Once a magnet touches the surface of another magnet or a ferrous metal the two objects will become attached. There are a variety of uses of magnets, whether you're in a commercial, marketing, retail or industrial field. Of all the types of magnets, flexible magnetic strips are the most dexterous. The advertising uses of flexible magnetic strips include labels, point of sale displays, vehicle signs and signage. Flexible magnets are often used for fridge magnets, planning boards and printed magnets. The refrigerator is the center of activity in your home which is why fridge magnets in particular are such a great advertising tool. Fridge magnets ensure that customers never have to search for your contact details and they will always remember the products or services you offer..
Due to their high levels of magnetism block magnets are quite durable. Consider the types of conditions and the purpose you will use a magnet for before you decide on the magnet's composition. If you are using the magnet for a heavy duty or industrial application consider using a rare earth magnet instead of a ceramic or alnico magnet. In addition to magnet strength, also consider whether you need your block magnet to perform well in extremely high temperatures. If so, then you will want to take that into consideration when choosing the magnet type, as different magnets lose or maintain their magnetism at different temperatures. Depending on the need of magnet choose one that is difficult or easy to demagnetize.
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