Neodymium magnet - what is it and how is it made

Published: 2023-02-21 16:14:46 • Daniel Gårdefelt

Neodymium magnets, commonly known as NdFeB magnets, are a kind of rare-earth magnet that is well-known for its strength and adaptability. These magnets are widely employed in a wide range of applications such as electric motors, generators, and magnetic separators. In this post, we will look at how neodymium magnets are made, their chemical makeup, and how much they cost. We'll also talk about the various forms of neodymium magnets and how to determine their strength. Neodymium

Magnet Manufacturing Process:

Many stages are involved in the manufacture of neodymium magnets,
1.including: Raw Material Preparation: The preparation of raw materials is the initial stage in the manufacturing process. Neodymium magnets are composed of neodymium, iron, and boron. The basic components are combined and then melted in a furnace to form an alloy.

2.Milling: Finally, the alloy is milled into a fine powder. To guarantee that the finished product has the necessary magnetic characteristics, the size of the powder particles is carefully regulated.

3.Pressing: With a hydraulic press, the powder is pushed into the required form. The press exerts great pressure on the powder, compacting it into a solid state.

4.Sintering: The crushed magnets are next sintered in a high-temperature furnace. The particles are heated throughout this process until they link together, generating a solid magnet.

5.Machining: The magnets are machined to their final form and size after sintering. Diamond cutting tools are used to guarantee that the magnets are exact and homogeneous.

6.Coating: Lastly, the magnets are coated with a protective coating to prevent oxidation and increase longevity.

Neodymium Magnet Chemical Formula: As previously stated, neodymium magnets are composed of neodymium, iron, and boron. Depending on the application and required magnetic qualities, the specific chemical composition of the magnets might vary. A typical neodymium magnet, on the other hand, includes roughly 35% neodymium, 61% iron, and 1.2% boron, along with trace quantities of additional elements such as dysprosium and aluminium.

Neodymium Magnet Pricing: The price of neodymium magnets can vary based on several factors, including the magnet's size, shape, and strength, as well as the amount ordered. Larger and more powerful magnets are often more costly than smaller and weaker ones. Despite its strength, neodymium magnets are less expensive than other high-performance magnets. As a result, they are an appealing solution for a wide range of applications, particularly those where cost is a consideration.

Neodymium Magnets in Many Shapes: Neodymium magnets are available in several forms, such as block, ring, and cylinder. Because the form of the magnet can alter its magnetic characteristics, it is critical to select the appropriate shape for your application.

Block magnets are rectangular in shape and are frequently employed in applications that demand a high magnetic field in a single direction. Ring magnets, sometimes known as donut magnets, are circular magnets that are perfect for use in sensors, speakers, and medical equipment. Cylindrical magnets are utilized in electric motors, generators, and other high-performance applications.

Neodymium Magnet Strength Calculation: A magnetic field strength calculator may be used to calculate the strength of a neodymium magnet. The magnet's strength is measured in tesla (T) or gauss (G), with 1 T equaling 10,000 G. To determine the strength of a neodymium magnet, you must first know the magnet's size as well as the distance between the magnet and the item.