Discover More about Rare Earth Magnets

Magnets have been in use for a very long time and they now take up a large chunk of every industry since they are used in most of the common and important technological devices that are found in households and industries alike.

The magnets that are used most are popularly known as earth magnets. They are very much like any other permanent magnet but the metal they are made from is what sets them apart. Rare earth magnets are made from metals that are ferromagnetic. Ferromagnetic metals are those that possess magnetic properties below a certain temperature even without the presence of an external magnetic field. These metals produce a very strong magnetic force when they are magnetized and this makes rare earth magnets very powerful.

The strength of a rare earth magnet is said to be so much to the extent that a finger placed between two magnets can easily be crushed. The magnet force they produce can also be harmful to the health of young children and babies if they happen to ingest them. It may at times even lead to death. They should therefore be kept away from children and should be handled carefully.

Most popular

Early magnets were discovered before the 18^th century but rare earth magnets were only developed later in the 1900s. They then became the magnet of choice for various uses. Of the two available rare earth magnets, neodymium is the most common. It is found in varying shapes and sizes.

Rare earth magnets were initially expensive but prices have gone down with time. Regular consumers can actually be able to buy them for use in their households or any other purpose.

Application  

This type of magnets is very common in electromagnetic devices like computer hard drives. They are also found in refrigerators, metal detectors, cordless items like microphones and even self-powered flashlights.

Their extra strong magnetic force has pushed along the phasing out of other weaker magnets but not completely. These magnets are however very brittle and can therefore break very easily if they fall. They should be handled carefully for this to be avoided.

You can get rare earth magnets according to your specific needs. If you need them in varying strengths, different sizes and shapes they will be customized to meet your exact specifications. A licensed manufacturer would give you good quality magnets since the sale of such magnets is controlled. Where you are not certain what design would work best for your project, the manufacturer would be able to help you design your own customized magnets for your project. 

Any magnetic data storage devices like computers and credit cards should be kept away from these magnets at all costs because they could easily be ruined. Such storage devices have their data stored in magnetic patterns. When a magnet passes over them, especially a strong one, the pattern gets scrambled and the data gets erased. Such strong magnets require very little time to erase data on such devices so be very careful around them.   

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Neodymium Magnet: Anything Possible

Neodymium magnet is versatile in their uses. It is strong enough to be used in all significant applications. It is very well used for industrial as well as commercial purposes. It has a vast applicability starting from your home and kitchen to the industry infrastructure at large. Neo magnet is also helpful in running several serious affairs like in creating air craft equipment and used for navy purposes. Further neo-magnets are being sent into space for collecting the space dust for many experiments. The dynamic capabilities of Neodymium magnet helped the scientists in collecting the particles from the surface of Mars.

Apart from these significant uses it can be applied for small and useful purposes like jewelers use Neodymium magnet to keep their jewelry like earring at correct place without going here and there. Moreover it is widely used in household applications like keeping and storing papers on the wall of the refrigerator. However it is used in the jobs like welding clamps, oil filters, mounting tools, costumes and many more.

In kitchen it can help you through giving to a new organized look with more space area. It can help you by providing you the advanced conventional equipment to use like a block magnetic knife rack and sometimes spice jar holder, etc. Use of this things help you at your kitchen in getting the equipment and thing readily just beside you. The making of a Neo Magnet knife holder is quite simple. You can do it at your home with your entire requirement. It is simple and can be made by using wood along with some kind of clue to stick them with the powerful magnets. Thus you can make your customized one.

In the field of medicine also it has earned lots of reputation. From the ancient time as well Magnets are often trusted as a healer for several different types of acute pain, such as back pain, foot pain. It can be helpful in curing the conditions of arthritis and fibromyalgia. Even in modern days lots of magnetic products like shoe insoles, bracelets, other jewelry, bracelets and mattress pads are marketed so as to promote good health. Though there are less scientific evidence which can support the medical effect and healing aspect of magnet but still people use it for treating various ailments. People make use of Neodymium Magnets for treating and preventing of various kinds of pain of hip, wrist, knee, foot, back as well as pelvic pain. Thus treating people with the help of Neo Magnet Therapy is becoming more popular in recent days.

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Neodymium in everyday life

Do not get confused with Neodymium magnet and rare earth magnets. Both are different from each other.  Neodymium magnets are strong and cheap and used in wide ranges of applications. It has some distinct attributes that you won’t find in any other magnets. However it is the most general type of rare earth magnets that is useful for various household applications. The substance is strong enough to be used in various applications.

Neodymium magnets come in market in different shapes and grades. The quality of the magnet depends on its grades such as the N40, N35, N45, N42, N45, N50, N48, N52. A greater grade of magnet has a more magnetized field.

The most common use Neodymium magnets are for the purpose of cleaning up applications. It can be helpful to collect the spilled nails, staples or pin over the floor. If you just float a magnet over the surface you can easily able to pick all the fallen objects up.

Neodymium magnets can be used for storing and holding various essential household items. Important papers and notice can be placed over the fridge door using a piece of Neodymium magnets. Memorable photos and other documents can be stored with the help of this.  

Magnets can be helpful to keep the door closed. You can use it in drawers, doors and cabinets to keep it closed always. Two small magnet can be placed with one side attached to the inside panel of the drawer and other side to the door or drawer itself. Proper alignment of the magnet helps in keeping the draw shut.

Another most common application of magnets is to get a stuck battery out of its case. Often it happens that batteries get stubborn with its case. It becomes difficult to get it out from the toy or clock. However use of strong magnet can make the task easy for you. The strong magnetic power of the neo magnet helps the battery to pop out easily with no effort.

In the kitchen also there are lots of uses of these Neodymium magnets. You can use magnets in building a knife holder which can be very helpful to hold your entire knife at a single place for easy access and smart use. Thus instead of purchasing an expensive knife holder from the market you can design your own one through using a bar magnet. It will cost you less and can be made with different appealing designs to go with your home décor.

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How Magnets are used in the Fridge

Most people are certain that the only magnets that are in contact with their fridge are those small ornamental fridge magnets that are sometimes used to hold up shopping lists and adorable photos of their children. This is however not true.

Your fridge door actually has a magnet inside it. The fridge is made of a metal and so when the magnet is placed there it attracts the metal in the fridge and the door closes smoothly.

Why the magnet

·         It becomes much easier to close the fridge door because there is minimal resistance from the weight of the door.

·         You will always be certain that the door is completely shut. This will save you a lot of money in temperature loss from an open door since it creates an airtight seal. It also ensures that your food cools properly making it last longer if it is stored in the right container.

What if it won’t close?

If your refrigerator door does not close any more it could be that the hinges are damaged or the rubber seal on it is faulty. The hinges can be tightened using a screwdriver if that is where the problem lies. If it is with the rubber seal then it needs to be replaced. You will know it is the rubber seal if you place a piece of paper on the door and then close the fridge door. Try pulling out the piece of paper and if it comes out with no resistance then the seal needs replacing.

You can also place your own magnets to make sure that your fridge door closes. Buy a few neodymium magnets from anywhere that is safe (you can get them online as well). An assortment of sizes may be best so that you have a variety to choose from. Once you get the magnets place them in the space between the outside of the fridge and the magnetic strips. Stack as many as you can until you find that your door closes with ease. It should not take very long and they will continue serving you for a long time.

How it came about

Old refrigerators did not have magnets in them. They just had a latch and that is what was used to close them shut. Just like any other electronic device newer models were introduced into the market and people discarded their old models.

Some would leave their fridges on their lawns but children would come playing in that area. Some children found these fridges a perfect place to hide during a game but they did not know that once the fridge was latched from outside it became airtight. There was also no way of unlocking it from inside. There were a number of incidences where children suffocated in disposed fridges while playing and people began a movement to make fridges safer. That is how magnets found their presence in fridges.

This method has proven to be very useful because small children cannot easily open fridge doors thus keeping it safe. Food also does not go bad fast.

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Prerequisite of Neodymium Magnets

A detailed investigation about the physical and thermal attributes of the strong neodymium magnetic materials gives the following specification.

Magnetic Plating or Coating:

Neodymium magnets are the strongest magnets among all mother kinds of magnets available in the market. It is a composition of the metal Iron, Neodymium and Boron in a specific proportion. The iron element of the magnet may cause rust over the period of time if exposed to the open environment. So in order to strengthen the brittle magnet material and to protect it from corrosion, plating or coating over the magnet is a best option. A lot of coated materials are there for which are widely used for coating a magnet. However the best option among all is the nickel platting. The technique of nickel platting is a process of triple plated coating. The three layer coating comprises of separate coating of nickel, copper, and nickel again. This repeated three layer coating make the metal strong and durable enough as compared to single nickel plated magnets. Even you will find the gold plated magnets with quadruple coated with nickel, copper, and then nickel again with a final top coating of gold.

Machining:

Neodymium magnets are brittle in nature. So there is a risk of getting it break into pieces while doing machining on them. The material is however more likely to chipping and cracking, that is the reason why it is not suitable for normal machining. The machining process generate heat, which may cause the neodymium demagnetize its magnetic field. Thus machining of this magnet is not advisable.  

Demagnetization:

Rare Earth Neodymium magnets possess a great capacity of high resistance to demagnetization. Neo magnets are permanent in nature that means it almost won’t lose their magnetization even if it is dropped. However the risk of losing the strength of the magnet lies when it is heated over a maximum operating temperature of 176°F (80°C). This may be the reason of a complete demagnetization of the N grades magnet.

Strength:

If you are a novice in the field of handling a neodymium magnet, then be careful in your act. Follow all the safety cautions before dealing with the magnet. Always cover your hands and protect your eyes through gloves and goggles respectively in order to keep yourself protected from the hazards of the metal. Magnets have an amazed strength. So if it breaks down into tiny sharp particles, then the magnet particles will fly in the air and can get into your eyes. Those sharp particles are not less harmful than glass particles.

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A Lesson about Magnetic Separation

As we all know magnet act through its magnetic field. It can be assembled in order to execute some significant magnetic separation applications. Magnets through its intense magnetic force attract the metal like steel, iron and other ferromagnetic bits. Thus, while doing the separation activities it can easily separate contaminants out of other materials mix. However it is a fun element while seeing the use of magnet in this way. But at the same time it is significantly useful as well.

When we talk about a magnetic separator a question always come to our mind. We know very well that magnet attacks iron and sticks to it. But what will we do when we have to use magnets to separate the metals of non- ferromagnetic in nature. That means how we separate a mixture of metal when none of the element of the mixture is sticking to magnet. For example can we separate aluminium which is not a ferromagnetic metal from other non-metallic trash?

We can easily separate the ferromagnetic metal from another materials mix. For this we have to construct a conveyor belt attached with two magnets on both the side, which can provide a strong magnetic hold to execute the task. Thus while the material mix come with the contact of magnet the non-ferromagnetic stuff which is not attracted to magnets separated automatically by just falls straight down. The technique is quite useful for separating ferromagnetic materials such as nickel, iron or steel from other materials.

But the main drawback is that magnet does not stick to the non-ferromagnetic metals like aluminium or copper, as well as many other electrically conductive metals. So how can we use the magnets to separate these materials from other stuff?

Fortunately science has the solution for that also. The key to solve the issue lies with Eddy Current. Eddy Current enables the magnet to spin at a greater speed in that conveyor belt and the technique will work with the repelling force between the magnet and the metal. Here the magnets exert a force on the metal resulting it throwing off out of the stuff rather than just dropping them. Thus the metal of aluminium or copper which are of non-ferromagnetic in nature can get separated from the stuff. Thus magnets are useful in the magnetic separation applications for both ferromagnetic as well as non-ferromagnetic stuff.

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Some New Applications of Neodymium Magnets

Thanks to the latest researches, today we are aware of even the most unexpected yet important uses of magnets in industries and in our daily life. In reality, we are completely surrounded by science and technology such that there are no limits to new applications of the available resources. This is applicable in case of neodymium magnets as well. As already known, these magnets belong to the group of rare-earth magnets and are the strongest ones available in the market. Since the invention of neodymium magnets in 1982, much advancement has taken place. Consequently, we have some amazing applications and facts about these magnets which can prove revolutionary for many industries and even some aspects of our daily life.

It is something quite obvious that neodymium magnets, being the strongest of all, can be used in almost all the known cases where magnetic field is required. They can replace other types of magnets and perform the required function very well. Such applications include electric generators, motors, door locks, speakers and computer hard disks. However, being relevant to our topic, we will focus more on those applications which are inspired from the availability of neodymium magnets. Their extra-ordinary strong magnetic field has led to some new developments which were not very likely before.

·         Neodymium Magnet Toys

These magnets toys are marketed in the form of spheres which are joined together to from different 3D structures. Neodymium magnet toys are also referred as children building set and in some cases, these are used for education purposes also. Strong neodymium magnet spheres are also ideal for conducting research and experiments in school labs.

·         Use in Sports Parachute Equipment

Parachuting is an increasingly popular sport, but risks of injury are a bit high. Regarding that, neodymium magnets are used in sports parachute equipment. This makes it easy to open and close the parachute reducing the risk of injury.

·         Magnetic Resonance Imaging (MRI) Scanners

This is perhaps the most interesting application of neodymium magnets in medical. MRI scanner is somewhat the latest technology in medicine which is used to scan the body for tumors and other similar health issues.

·         Surgical Linx Anti-reflux system

This is another application of neodymium magnets in medical. Linx anti-reflux system is actually a treatment of gastroesophageal reflux disease (GERD). Neodymium magnets are surgically placed in the lower esophageal sphincter to cure this disease.

·         Maglev Trains

This exciting application of neodymium magnets is not known widely. Maglev is floating train where neodymium magnets are used to repel train engine from the track. This ensures a frictionless circulation. 

Apart from the above-described applications, you can also use neodymium magnets at your home for creative purposes. These are not limited but may include cutlery bolder, decorations, metal detector, homemade compasses, jewelry clasps, picking up nails and screws etc. However, there are some important precautions you must take to ensure a safe use of these strong magnets. Due to their extremely high magnetic force, you need to be extra careful while handling them. Make sure you have no ferrous object with or around you. Otherwise, those ferrous objects will fly towards magnet causing serious injury. Also, keep neodymium magnets away from children. Even you should not give magnetic toys to children freely. This is because if these magnets are swallowed, they can cause digestive and respiratory problems leading to death. Finally, keep in mind that very high temperatures can decrease the magnetic strength of neodymium magnets.

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Worth of Magnet in Modern Technology

There is no doubt about the usefulness of Neodymium magnets, but still there are some hazards associated with the use of the product. Neodymium magnets are strong enough. So handling of this magnet needs some extra care and diligence. It is advisable to protect your hands with gloves and eyes cover with goggles while handling Neodymium magnets. People having exposed to the magnetic field of Neodymium may have other health hazards as well. Sometimes it happens that when you are dealing with big magnets your finger get crushed due to the magnetic field and sometimes due to the attraction it can break your bone and tear the skin also. Magnets should be kept away from the reach of small children. It can take their life if in any way they are swallowed.

Neodymium magnets are mostly demanded for its strength and magnetic force. That is the reason why it can be used in most of the industrial and commercial application. The strong neodymium magnet is permanent in nature and it is almost impossible to demagnetize the material. Due to its outstanding strength it is able to be used in the production of small parts. So many magnetic application used in household practices is possible through the use of this neodymium magnet. applications where Smaller magnets are needed like ear buds for music, toys, motors and other appliances can be made out of a neo magnet, because its rare-earth element possesses a greater magnetic field.

The modern technology needs the assistance of the magnetic field. The technology of mechanism of Computer monitors, CRT, CD, DVD and TV screens helps in generating images making use of magnets. It also contributes to the medical science in generating images through Magnetic resonance imaging (MRI) machines. It enables the doctors to view of what's happening inside the human body through the use of both magnets as well as the principles of magnetism. We all use ATM machine and different type of debit and credit cards. All this application use the magnetic technology to store important user account information and details in a magnetic strip for easy and fast retrieval of the of information. You may hear about a magnetic can opener. It is a device that holds the lid of the can with a strong magnet inside it. The device than cut the edge of the lid and enable you to take the can from it. There is a quick tug on the lid which pulls it off and you can get the can without the lid.

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