The Great Misconception: The Grade Performance Gap Between Alloy Block and Finished Magnets
John Ebert, Business Manager (Americas), Yunsheng USA

The magnet grade is often the most critical magnetic performance characteristic specified on Neodymium permanent magnet designs.  Yet, it is little-known that the prevailing industry standard (in China) has been based upon the performance characteristics of the alloy block instead of the magnet, itself. This is perhaps the singular, most misunderstood and misinterpreted aspect of magnet performance requirements between producers and designers. We will address the underlying technical reasons for this performance gap between magnet and alloy block, including: production inspection practices, pressing alignment, machining angle tolerances, magnet geometry, magnetic angle of error inspection, among others. Our objective is to dispel this misconception and expand the knowledge base of current and future designers of permanent magnet applications to recognize how to clearly define their specifications with the producers.

John Ebert is Business Manager of Yunsheng USA and has been with the company for 13 years.  John is a Certified Motion Control Professional  and is a polyglot (he speaks Mandarin, Cantonese, French and Spanish).

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