One of the great advantages of neodymium ball magnets is that they never lose their strength. There is no need to worry that they are going to have to be replaced regularly as they will do the job they are intended to do for a long time.
Since the first neodymium magnets were produced back in 1982, they have been growing more and more popular. It is clear that these magnets are studied, developed and produced by a well-known and respected company, General Motors. It was not long before their use spread way beyond the initial one required. Neodymium ball magnets can be made by two methods - either the bonded process or the sintered process. With the sintered process, the products are melted and then set to the shape of an ingot. Once cooled, the ingot will be shattered into tiny pieces and then the small pieces are reformed into blocks which then have their surface treated before they are magnetized.
With bonded magnets, thin slices are melt-spun and then smashed to small pieces. Then a polymer is added and then the magnet is formed into the shape required including the ball or spherical shape. The bonded magnets are easier to shape and when there is the need for a ball or arc battery then this is the way to do it. In 2013, China produced most of these magnets, which is estimated to be 75% of the worlds' consumption. Classified as rare-earth magnets, they have usage hazards that do not appear in other types of magnets. There is possibility to cause physical injury due to the strong magnetic force these magnets possess, but this will only be the case if they are not used appropriately.
One of the great advantages of neodymium ball magnets is that they never lose their strength. There is no need to worry that they are going to have to be replaced regularly as they will do the job they are intended to do for a long time. In many cases there will be two years of hard use before there are any problems at all. One big problem when using a ball magnet is exposure to heat, but it would have to be more than 100°C.This will be the ideal type of magnet to use when there is the need for a very high magnetic force and a lot of electric current needs to be provided. Their use is as wide and varied as can be imagined. They can be found in spacecraft instruments and loudspeakers, medical instruments and magnetic therapy products.
Although they are strong and have some amazing applications, they are also widely available online and have many applications at home. Many scientific projects that children bring home from school will require them, apart from which they can be used to stick freshly painted pictures to the fridge. If this is done however, children should be warned not to play with neodymium block magnets, especially if there is more than one, as they can be dangerous. There were cases of bones broken and also if swallowed, they can cause digestive problems and have been known to kill.
By Stanford Magnets, http://www.stanfordmagnets.com/.
Based in California, Stanford Magnets has been involved in the R&D and sales of licensed Rare-earth permanent magnets, Neodymium magnets and SmCo magnets, ceramic magnets, flexible magnets and magnetic assemblies since the mid of 1980s. We supply all these types of magnets in a wide range of shapes, sizes and grades.