Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 15, 2021 - September 17, 2021
It has been a long time since the food industry has been required to comply with HACCP and FSSC 22000 standards, but various devices are required to have appropriate qualifications based on critical control points. Rare earth magnets used in magnetic separators are demagnetized due to deterioration over time and the environment in which they are used, so it is necessary to confirm performance qualification. Therefore, in this study, we performed static magnetic field analysis on the relationship between the desired surface magnetic flux density and demagnetization using Maxwell's equations, calculated the surface magnetic flux density and permeance coefficient from multiple patterns of magnetic arrangement, and depended on aging deterioration and operating temperature. Made it possible to predict demagnetization. As a result, Operation Qualification becomes possible, and quality assurance of products and danger avoidance can be realized.
