Rare Earth Speaker ferrite magnet ring

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Dujiangyan Hengtong Magnetoelectricity Co., Ltd. is located in the rich western Sichuan Plain in southwest China, the green and quiet Qingcheng Mountain, Dujiangyan City, where the famous ancient water conservancy project Dujiangyan is located. The company was established in 1993 and specializes in R&D, production and sales of permanent magnet devices. For more than 20 years, we have insisted on being customer-centric and striving-oriented. Continuous investment in research and development in the field of magnetic materials, driven by customer needs and cutting-edge technology-driven innovation, keeps the company at the forefront of the industry and leads the industry's development.

The company's main products are sintered ferrite permanent magnet components, sintered NdFeB permanent magnet components, and samarium cobalt permanent magnet components. The products are widely used in automobiles, office equipment, power tools, household appliances, IT parts and other fields. The company has an experienced team that solves the design and manufacture of various motor magnetic materials. According to customer requirements, we can participate in the design and development of customer motors, and provide optimized solutions for customers to choose and evaluate, so that customers can get the products they need faster and better.

The company's products are mainly sold to famous motor manufacturers in China, Taiwan, Europe, the United States, South Korea and so on. Won the respect and trust of customers. We adhere to pioneering and innovative, system management, customer satisfaction, focus on quality, reduce costs, promote environmental protection and save energy.

Certification: IATF16949,MSDS,RoHS,SGS,ISO9001.

1. What are neodymium magnets? Are they the same as "rare earth"?

Neodymium magnets are a member of the rare earth magnet family. They are called "rare earth" because neodymium is a member of the "rare earth" elements on the periodic table. Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world.

2. What are neodymium magnets made from and how are they made?

Neodymium magnets are actually composed of neodymium, iron and boron (they are also referred to as NIB or NdFeB magnets). The powdered mixture is pressed under great pressure into molds. The material is then sintered (heated under a vacuum), cooled, and then ground or sliced into the desired shape. Coatings are then applied if required. Finally, the blank magnets are magnetized by exposing them to a very powerful magnetic field in excess of 30 KOe.

3. How is the strength of a magnet measured?

Gaussmeters are used to measure the magnetic field density at the surface of the magnet. This is referred to as the surface field and is measured in Gauss (or Tesla). Pull Force Testers are used to test the holding force of a magnet that is in contact with a flat steel plate. Pull forces are measured in pounds (or kilograms).

4. What does the "N rating", or grade, of the neodymium magnets mean?

The grade, or "N rating" of the magnet refers to the Maximum Energy Product of the material that the magnet is made from. It refers to the maximum strength that the material can be magnetized to. The grade of neodymium magnets is generally measured in units millions of Gauss Oersted (MGOe). A magnet of grade N42 has a Maximum Energy Product of 42 MGOe. Generally speaking, the higher the grade, the stronger the magnet.