Saint Langma Magnetics has been deeply engaged in the magnetic industry for more than 20 years. During this period, we have received tens of thousands of customers. Some can express their purchasing needs, while others require continuous guidance from our sales engineers. In general, as long as customers can confirm the magnet's performance requirements, shape and size, magnetization direction, surface treatment requirements, and magnet drawings, a high-quality inquiry can be completed. Below, Saint Langma Magnetics will take neodymium-iron-boron permanent magnets as an example to explain in detail.

1. Magnet Performance

The performance of neodymium-iron-boron permanent magnets is indicated by specific grades, which generally include Chinese standards, American standards, and European standards. Among them, customers are accustomed to using grades based on Chinese standards, such as N50, N52H, etc. Once the grade is determined, the customer's requirements for magnetic performance can be quickly clarified. If the customer is not clear about the grade, it is necessary to confirm key parameters such as the magnet's residual magnetism, coercivity, maximum energy product, and magnetic flux in sequence.

2. Shape, Size, and Magnetization Direction of the Magnet

The shape and size of neodymium-iron-boron permanent magnets must be clearly defined. Once the size is determined, the tolerance also needs to be confirmed, such as 86mm (±0.05mm); otherwise, it will directly affect the adaptation of the end product. For neodymium-iron-boron permanent magnets with complex shapes, the contour and its angle requirements also need to be confirmed one by one. It is strongly recommended that customers provide clear drawings. If not, our technical engineer can help you draw them. In addition, it is necessary to determine the magnetization direction (i.e., the N and S poles), magnetization method, magnetization angle, magnetic declination, etc.

3. Surface Treatment

Sintered neodymium-iron-boron permanent magnets are produced using powder metallurgy technology and are a kind of powder material with high chemical activity. There are tiny pores and cavities inside them, which are prone to corrosion and oxidation in the air. Once the magnets are corroded or their components are damaged, their magnetic properties will gradually reduce or even be lost over time, thereby affecting the performance and service life of the entire machine. Therefore, strict anti-corrosion treatment must be carried out before use. At present, common anti-corrosion treatments for neodymium-iron-boron magnets include electroplating, electroless plating, electrophoretic coating, phosphating, etc. Among them, electroplating, as a mature metal surface treatment method, is widely used.

4. Other Requirements:

Such as appearance requirements, other testing requirements (e.g., aging tests, etc.), packaging requirements, transportation requirements, and so on.

5. Product Delivery Time

The shape of neodymium-iron-boron permanent magnets roughly determines the length of the delivery time. Customized products require special molds, and the production of molds also takes time, which is an important factor that customers need to consider. For products with urgent delivery requirements, it is essential to confirm in advance with our sales engineers.

Backed by excellent product quality and a comprehensive service system, Saint Langma Magnetics has become the preferred equipment supplier for many world-renowned companies in China's rare earth material application field and industrial water treatment sector. It has maintained long-term and stable cooperative relationships with multinational enterprises such as Germany's Siemens, America's Westinghouse Electric, Japan's Mitsubishi Heavy Industries, France's Alstom, as well as Fortune Global 500 companies, including State Grid Corporation of China, China Energy Investment Corporation, China General Nuclear Power Group, and Angel Yeast.

As an enterprise with committed to innovation and striving for excellence as its core values, Saint Langma Magnetics has always provided qualified quality assurance for every product produced through rigorous production processes and complete inspection procedures, thereby offering users a satisfactory application experience.

Contact Saint Langma Magnetics now, and let our cooperation start here!

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