Technology

How to identify good or bad magnets

A magnet is a material with a certain magnetization. The molecules inside have their own field, in which they move in only two directions. It is this moment of mutual opposition that creates the property of attraction and repulsion of metal objects. It has long been no secret to anyone that when you try to connect two magnets with the same poles, they will be repelled. Only the opposite poles are magnetized.

The emergence of a new strong magnet has displaced ferrite products into the background, practically replacing them in industrial sectors and medicine with a neodymium magnet. Moreover, in everyday life, he also began to gain popularity due to its power with a small size. Search devices and electronics, fasteners and souvenirs, furniture parts, clothing, and accessories – neodymium magnets are used everywhere. And this is not the whole list.

Today, magnets are actively used in any area of our life. At the same time, most of the devices do not work without them, and in everyday life, they become simply irreplaceable.

How To Differ Between Good And Bad Magnets

Today we live in a reality when the consumer market is filled with low-quality goods. In particular, this applies to homemade neodymium magnets, a large number of which are sold in some companies and online stores. Such firms and shops rely on the incompetence, naivety of buyers, their desire to buy a cheaper product. They offer the consumer cheap magnets, in which there is a very low content of neodymium, in comparison with similar magnets made in professional factories. You can get customised magnets bulk.

To avoid being cheated by purchasing good neodymium magnets, you need to pay attention to their markings. Real magnets made in factories are marked N38, or N42, N45 (but they are very expensive), while fakes, which are sold very widely on small and incomprehensible sites, are actually marked N32, N33.

Such magnets, unlike real ones, do not have many important properties:

  • Their magnetic field of attraction is very weak;
  • The life of such magnets is very short, as they quickly demagnetize.

Thus, having bought such magnets, you cannot count on their high-quality work.

Finding the right path

Of course, qualified specialists who will test it on special equipment can help you to choose a good quality neodymium magnet. However, this service costs some money. But what should an ordinary buyer do? First of all, you should pay attention to the price. A quality product or a factory product cannot be cheap, because, otherwise, the manufacturer will work at a loss and may go bankrupt. That is, it will be an unprofitable production.

  • It is at a low price that the suppliers of low-quality goods attract buyers, passing off fakes as good goods.
  • If you really want to buy quality neodymium magnets that will serve you for a long time, do not chase the price.

Different types of magnets

Many electrical appliances, sensors, as well as home appliances, work due to a certain type of magnets that are installed in them. Moreover, each has its own characteristics and performs a number of functions required in this device. The main types are:

  • electromagnets (controlled by electric current);
  • permanent magnets (retains magnetization for a long time – “natural magnet”);
  • temporary magnets (metal objects that are attracted to a magnet, but lose this property in its absence).

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