{"id":2487,"date":"2025-01-18T09:50:15","date_gmt":"2025-01-18T01:50:15","guid":{"rendered":"https:\/\/nbnlymagnet.com\/?p=2487"},"modified":"2025-01-18T09:52:55","modified_gmt":"2025-01-18T01:52:55","slug":"why-does-the-magnet-steel-of-a-permanent-magnet-motor-fall-off-and-what-are-the-serious-consequences","status":"publish","type":"post","link":"https:\/\/nbnlymagnet.com\/index.php\/2025\/01\/18\/why-does-the-magnet-steel-of-a-permanent-magnet-motor-fall-off-and-what-are-the-serious-consequences\/","title":{"rendered":"Why does the magnet steel of a permanent magnet motor fall off and what are the serious consequences?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2487\" class=\"elementor elementor-2487\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f817e9e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f817e9e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-48bde06\" data-id=\"48bde06\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b01985b elementor-widget elementor-widget-text-editor\" data-id=\"b01985b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p id=\"\">01 Characteristics of Permanent Magnet Motor Magnets:<\/p><ul><li>Simple shapes, commonly rectangular, tile-shaped, etc., with a tendency for cost-reducing designs to adopt embedded square magnets.<\/li><li>Easy magnetization process, either single-pole or multi-pole radial magnetization.<\/li><li>Technical requirements include high temperature stability, consistent magnetic flux, and strong adaptability.<\/li><li>Magnetic energy product and coercivity are mainly in the medium to high range, with electric vehicle drive motors focusing on high magnetic energy product and high coercivity.<\/li><li>Segmented bonding enhances insulation performance, and epoxy coatings further strengthen insulation.<\/li><\/ul><p id=\"\">02 Key Inspection Items for Motor Magnets:<\/p><ul><li>High temperature stability: Testing open-circuit, semi-open-circuit magnetic decay, and high-temperature demagnetization curves.<\/li><li>Magnetic flux consistency: Strictly required, as any inconsistency can affect motor performance. Control of remanence, dimensional tolerance, and chamfer coating consistency is necessary.<\/li><li>Adaptability: Consideration of details such as angles and radii, with custom-made profiling fixtures for inspection.<\/li><\/ul><p id=\"\">03 Issue of Motor Magnet Detachment:<\/p><ul><li>Magnets are fixed with adhesive, theoretically tightly held by magnetic force, but detachment can occur in practical applications.<\/li><li>It is important to ensure that the magnet and fixing surface are conformal, with adhesive reinforcement.<\/li><li>Loss of magnetism at high temperatures weakens the attractive force, and vibration may lead to detachment, causing friction and damage between the stator and rotor.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-91a3c80 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"91a3c80\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-fc8c740\" data-id=\"fc8c740\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8ebe37c elementor-widget elementor-widget-image\" data-id=\"8ebe37c\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"750\" src=\"https:\/\/nbnlymagnet.com\/wp-content\/uploads\/2025\/01\/\u611f\u5e94\u7535\u673a.jpg\" class=\"attachment-large size-large wp-image-2075\" alt=\"\" srcset=\"https:\/\/nbnlymagnet.com\/wp-content\/uploads\/2025\/01\/\u611f\u5e94\u7535\u673a.jpg 750w, https:\/\/nbnlymagnet.com\/wp-content\/uploads\/2025\/01\/\u611f\u5e94\u7535\u673a-300x300.jpg 300w, https:\/\/nbnlymagnet.com\/wp-content\/uploads\/2025\/01\/\u611f\u5e94\u7535\u673a-150x150.jpg 150w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>01 Characteristics o [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[22,38],"tags":[41,40,42,43],"class_list":["post-2487","post","type-post","status-publish","format-standard","hentry","category-blog","category-magnet-knowledge","tag-magnet","tag-nbnlymagnet","tag-ndfeb","tag-rare-earth-permanent-magnets"],"_links":{"self":[{"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/posts\/2487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/comments?post=2487"}],"version-history":[{"count":4,"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/posts\/2487\/revisions"}],"predecessor-version":[{"id":2492,"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/posts\/2487\/revisions\/2492"}],"wp:attachment":[{"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/media?parent=2487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/categories?post=2487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbnlymagnet.com\/index.php\/wp-json\/wp\/v2\/tags?post=2487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}