![]() It is highly recommended that when constructing rare earth magnetic assemblies, they be magnetized after assembly. Magnets can chip if allowed to “jump” at an attracting object. Fingers can be severely pinched between attracting magnets. Therefore, it is crucial to handle these magnets with extreme care to avoid personal injury and damage to the magnets. Magnetizing and Handling - Neodymium magnets are very brittle and very strong magnetically. Cracks are acceptable as long as they do not extend across more than 50% of the pole’s surface. A chipped edge is considered acceptable if no more than 10% of the surface is missing. 005”, whichever is greater.Īccording to International Magnetics Association (IMA) standards, visual imperfections such as hairline cracks, porosity, and minor chips are commonly found in sintered magnets. Tolerances - For as-pressed material, tolerance on the thickness (direction of magnetization) is +/–. They are called “rare earth” magnets because the elements of neodymium are classified as such in the lanthanides section of the Periodic Table of the Elements. ![]() The material is then sintered, ground to dimension, magnetized and tested. Manufacturing - In general, the elements are melted together and milled into a powder that is dry-pressed to shape in the presence of a magnetic field. Not sure if neodymium is the best material for your application? Review the attribute and application chart for all of our magnetic materials. Extremely strong for their size, Neodymium (Nd-Fe-B) rare earth magnets are composed of neodymium, iron, boron and a few transition metals. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |