{"id":16528,"date":"2026-10-23T06:47:47","date_gmt":"2026-10-23T06:47:47","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=16528"},"modified":"2026-10-23T06:47:50","modified_gmt":"2026-10-23T06:47:50","slug":"magnetic-particle-testing-vs-penetrant-testing","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/ja\/posts\/magnetic-particle-testing-vs-penetrant-testing\/","title":{"rendered":"\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13 vs \u6d78\u900f\u63a2\u50b7\u8a66\u9a13\uff1a\u30af\u30ec\u30fc\u30f3\u6eb6\u63a5\u691c\u67fb\u306b\u304a\u3051\u308b\u9069\u5207\u306a\u65b9\u6cd5\u306e\u9078\u629e"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>\u76ee\u6b21<\/p><nav><ul><li><a href=\"#1-what-do-magnetic-particle-testing-and-penetrant-testing-detect\">1. \u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\u3068\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u3067\u306f\u4f55\u3092\u691c\u51fa\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<\/a><\/li><li><a href=\"#2-principles-magnetic-flux-leakage-vs-capillary-action\">2. \u539f\u7406\uff1a\u78c1\u675f\u6f0f\u6d29\u3068\u6bdb\u7d30\u7ba1\u73fe\u8c61<\/a><\/li><li><a href=\"#3-material-selection-the-first-decision-point\">3\uff0e\u6750\u6599\u9078\u5b9a\uff1a\u6700\u521d\u306e\u6c7a\u5b9a\u30dd\u30a4\u30f3\u30c8<\/a><\/li><li><a href=\"#4-advantages-and-limitations\">4\uff0e\u5229\u70b9\u3068\u9650\u754c<\/a><\/li><li><a href=\"#5-practical-points-for-crane-weld-inspection\">5. \u30af\u30ec\u30fc\u30f3\u6eb6\u63a5\u691c\u67fb\u306e\u5b9f\u8df5\u7684\u306a\u30dd\u30a4\u30f3\u30c8<\/a><\/li><li><a href=\"#6-common-misunderstandings\">6\uff0e\u3088\u304f\u3042\u308b\u8aa4\u89e3<\/a><\/li><li><a href=\"#conclusion\">\u7d50\u8ad6<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>\u6eb6\u63a5\u9762\u691c\u67fb\u306f\u3001\u5929\u4e95\u30af\u30ec\u30fc\u30f3\u3001\u30ac\u30f3\u30c8\u30ea\u30fc\u30af\u30ec\u30fc\u30f3\u3001\u30b8\u30d6\u30af\u30ec\u30fc\u30f3\u3001\u305d\u306e\u4ed6\u306e\u92fc\u69cb\u9020\u7269\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\uff08MT\uff09\u3068\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\uff08PT\uff09\u306f\u3001\u4e00\u822c\u7684\u306b\u7528\u3044\u3089\u308c\u308b2\u3064\u306e\u65b9\u6cd5\u3067\u3059\u3002MT\u306f\u78c1\u5834\u3092\u5229\u7528\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001PT\u306f\u6bdb\u7d30\u7ba1\u73fe\u8c61\u3092\u5229\u7528\u3057\u307e\u3059\u3002MT\u306f\u5f37\u78c1\u6027\u6750\u6599\u306b\u9650\u5b9a\u3055\u308c\u307e\u3059\u304c\u3001PT\u306f\u78c1\u6027\u6750\u6599\u306e\u5236\u7d04\u3092\u53d7\u3051\u307e\u305b\u3093\u3002\u8aa4\u3063\u305f\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3068\u3001\u6b20\u9665\u3092\u898b\u9003\u3057\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"666\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-VS-Penetrant-Testing.png\" alt=\"\" class=\"wp-image-16541\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-what-do-magnetic-particle-testing-and-penetrant-testing-detect\">1. \u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\u3068\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u3067\u306f\u4f55\u3092\u691c\u51fa\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p>\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3082\u8868\u9762\u306e\u6b20\u9665\u3092\u691c\u67fb\u3059\u308b\u304c\u3001\u691c\u51fa\u7bc4\u56f2\u3068\u5fc5\u8981\u306a\u6750\u6599\u304c\u7570\u306a\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u6bd4\u8f03<\/th><th>\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\uff08MT\uff09<\/th><th>\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\uff08PT\uff09<\/th><\/tr><\/thead><tbody><tr><td>\u691c\u51fa\u7bc4\u56f2<\/td><td>\u8868\u9762\u304a\u3088\u3073\u8868\u9762\u8fd1\u508d\u306e\u6b20\u9665<\/td><td>\u8868\u9762\u7684\u306a\u6b20\u9665\u306e\u307f<\/td><\/tr><tr><td>\u9069\u7528\u53ef\u80fd\u306a\u6750\u6599<\/td><td>\u70ad\u7d20\u92fc\u3001\u4f4e\u5408\u91d1\u92fc\u3001\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8\u7cfb\u307e\u305f\u306f\u30d5\u30a7\u30e9\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306a\u3069\u306e\u5f37\u78c1\u6027\u6750\u6599<\/td><td>\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u3001\u9285\u3001\u30bb\u30e9\u30df\u30c3\u30af\u3001\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u3001\u70ad\u7d20\u92fc\u3001\u4f4e\u5408\u91d1\u92fc\u306a\u3069\u306e\u975e\u591a\u5b54\u8cea\u6750\u6599<\/td><\/tr><tr><td>\u5185\u90e8\u6b20\u9665<\/td><td>\u691c\u51fa\u3067\u304d\u307e\u305b\u3093<\/td><td>\u691c\u51fa\u3067\u304d\u307e\u305b\u3093<\/td><\/tr><tr><td>\u5178\u578b\u7684\u306a\u6b20\u9665<\/td><td>\u8868\u9762\u306e\u3072\u3073\u5272\u308c\u3001\u8868\u9762\u8fd1\u304f\u306e\u3072\u3073\u5272\u308c\u3001\u91cd\u306a\u308a\u3001\u7d99\u304e\u76ee<\/td><td>\u8868\u9762\u4e80\u88c2\u3001\u591a\u5b54\u6027\u3001\u304a\u3088\u3073\u660e\u3089\u304b\u306a\u878d\u5408\u4e0d\u8db3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u7c21\u5358\u306b\u8a00\u3046\u3068\u3001MT\u306f\u8868\u9762\u304b\u3089\u5c11\u3057\u4e0b\u306e\u6b20\u9665\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u304c\u3001\u5f37\u78c1\u6027\u4f53\u306b\u9650\u3089\u308c\u307e\u3059\u3002PT\u306f\u8868\u9762\u306b\u63a5\u7d9a\u3055\u308c\u305f\u6b20\u9665\u306e\u307f\u3092\u691c\u51fa\u3057\u307e\u3059\u304c\u3001\u3088\u308a\u5e45\u5e83\u3044\u7a2e\u985e\u306e\u6750\u6599\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6ce8\uff1aMT\u6cd5\u306b\u3088\u308b\u8868\u9762\u8fd1\u508d\u306e\u691c\u51fa\u6df1\u5ea6\u306f\u3001\u4e00\u822c\u7684\u306b\u8868\u9762\u304b\u3089\u7d041\uff5e2mm\u4e0b\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5b9f\u969b\u306e\u6df1\u5ea6\u306f\u78c1\u5316\u65b9\u6cd5\u3068\u6b20\u9665\u30b5\u30a4\u30ba\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u3001\u7d71\u4e00\u3055\u308c\u305f\u56fd\u5bb6\u7684\u306a\u5b9a\u7fa9\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u9069\u7528\u3055\u308c\u308b\u691c\u67fb\u624b\u9806\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3088\u308a\u6df1\u3044\u6b20\u9665\u306b\u3064\u3044\u3066\u306f\u3001UT\u6cd5\u307e\u305f\u306fRT\u6cd5\u3092\u7528\u3044\u3066\u691c\u67fb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-principles-magnetic-flux-leakage-vs-capillary-action\">2. \u539f\u7406\uff1a\u78c1\u675f\u6f0f\u6d29\u3068\u6bdb\u7d30\u7ba1\u73fe\u8c61<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-magnetic-flux-leakage-attracts-particles\">\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\uff1a\u78c1\u675f\u6f0f\u308c\u304c\u7c92\u5b50\u3092\u5f15\u304d\u5bc4\u305b\u308b<\/h3>\n\n\n\n<p>\u5f37\u78c1\u6027\u4f53\u3092\u78c1\u5316\u3059\u308b\u3068\u3001\u78c1\u675f\u306f\u7279\u5b9a\u306e\u65b9\u5411\u306b\u6d41\u308c\u307e\u3059\u3002\u8868\u9762\u307e\u305f\u306f\u305d\u306e\u8fd1\u508d\u306b\u4e80\u88c2\u3001\u7d30\u5b54\u3001\u305d\u306e\u4ed6\u306e\u6b20\u9665\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u78c1\u675f\u306f\u66f2\u304c\u3063\u3066\u6750\u6599\u304b\u3089\u6f0f\u308c\u51fa\u3057\u3001\u6f0f\u6d29\u78c1\u5834\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u78c1\u6027\u7c92\u5b50\u306f\u3053\u306e\u6f0f\u6d29\u78c1\u5834\u306b\u96c6\u307e\u308a\u3001\u6b20\u9665\u306e\u4f4d\u7f6e\u3092\u660e\u3089\u304b\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6b20\u9665\u304c\u78c1\u675f\u3068\u5e73\u884c\u306a\u5834\u5408\u3001\u6f0f\u6d29\u78c1\u5834\u304c\u5f31\u3059\u304e\u3066\u660e\u78ba\u306a\u691c\u51fa\u7d50\u679c\u304c\u5f97\u3089\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001MT\u691c\u67fb\u3067\u306f\u901a\u5e38\u3001\u4e92\u3044\u306b\u76f4\u4ea4\u3059\u308b2\u3064\u306e\u78c1\u5316\u65b9\u5411\u3092\u7528\u3044\u307e\u3059\u3002\u30af\u30ec\u30fc\u30f3\u6eb6\u63a5\u90e8\u3067\u306f\u3001\u30e8\u30fc\u30af\u6cd5\u3092\u6eb6\u63a5\u90e8\u306b\u6cbf\u3063\u30661\u56de\u3001\u305d\u3057\u3066\u6eb6\u63a5\u90e8\u3092\u6a2a\u5207\u308b\u3088\u3046\u306b1\u56de\u9069\u7528\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u30af\u30ed\u30b9\u30e8\u30fc\u30af\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u65b9\u5411\u306e\u6b20\u9665\u3082\u691c\u51fa\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Inspection-for-Crane-Wheel.jpg\" alt=\"\" class=\"wp-image-16534\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt-penetrant-enters-the-defect-and-developer-draws-it-out\">\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\uff1a\u6d78\u900f\u6db2\u304c\u6b20\u9665\u90e8\u306b\u6d78\u900f\u3057\u3001\u73fe\u50cf\u6db2\u304c\u305d\u308c\u3092\u5f15\u304d\u51fa\u3059\u3002<\/h3>\n\n\n\n<p>\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u3067\u306f\u3001\u30ef\u30fc\u30af\u30d4\u30fc\u30b9\u8868\u9762\u306b\u6d78\u900f\u6db2\u3092\u5857\u5e03\u3057\u3001\u6bdb\u7d30\u7ba1\u73fe\u8c61\u306b\u3088\u3063\u3066\u8868\u9762\u3092\u7a81\u304d\u51fa\u305f\u6b20\u9665\u306b\u6d78\u900f\u3055\u305b\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u4f59\u5206\u306a\u6d78\u900f\u6db2\u3092\u9664\u53bb\u3057\u3001\u73fe\u50cf\u6db2\u3092\u5857\u5e03\u3057\u307e\u3059\u3002\u6b20\u9665\u5185\u90e8\u306e\u6d78\u900f\u6db2\u304c\u8868\u9762\u306b\u5f15\u304d\u623b\u3055\u308c\u3001\u76ee\u306b\u898b\u3048\u308b\u6307\u793a\u304c\u73fe\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6b20\u9665\u306f\u8868\u9762\u306b\u9732\u51fa\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u4e80\u88c2\u304c\u9178\u5316\u30b9\u30b1\u30fc\u30eb\u3001\u6eb6\u63a5\u30b9\u30e9\u30b0\u3001\u5857\u6599\u3001\u305d\u306e\u4ed6\u306e\u6c5a\u67d3\u7269\u8cea\u306b\u3088\u3063\u3066\u585e\u304c\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u6d78\u900f\u6db2\u304c\u6d78\u900f\u3067\u304d\u305a\u3001\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u3067\u6b20\u9665\u304c\u767a\u898b\u3055\u308c\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-material-selection-the-first-decision-point\">3\uff0e\u6750\u6599\u9078\u5b9a\uff1a\u6700\u521d\u306e\u6c7a\u5b9a\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-is-limited-to-ferromagnetic-materials\">\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\u306f\u5f37\u78c1\u6027\u4f53\u306b\u9650\u5b9a\u3055\u308c\u308b\u3002<\/h3>\n\n\n\n<p>\u70ad\u7d20\u92fc\u3084Q235\u3001Q355\u3001Q390\u306a\u3069\u306e\u4f4e\u5408\u91d1\u92fc\u306f\u5f37\u78c1\u6027\u4f53\u3067\u3042\u308a\u3001\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\uff08MT\uff09\u3067\u691c\u67fb\u3067\u304d\u307e\u3059\u3002\u4e00\u65b9\u3001304\u7cfb\u3084316\u7cfb\u306a\u3069\u306e\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u3001\u9285\u3001\u30c1\u30bf\u30f3\u306f\u975e\u5f37\u78c1\u6027\u4f53\u3067\u3042\u308a\u3001MT\u306b\u3088\u308b\u691c\u67fb\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt-is-suitable-for-non-porous-materials\">\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u306f\u975e\u591a\u5b54\u8cea\u6750\u6599\u306b\u9069\u3057\u3066\u3044\u307e\u3059<\/h3>\n\n\n\n<p>PT\u691c\u67fb\u306f\u78c1\u6027\u6750\u6599\u3092\u5fc5\u8981\u3068\u3057\u307e\u305b\u3093\u304c\u3001\u8868\u9762\u306f\u975e\u591a\u5b54\u8cea\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u3001\u9285\u3001\u30bb\u30e9\u30df\u30c3\u30af\u3001\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u3001\u70ad\u7d20\u92fc\u3001\u4f4e\u5408\u91d1\u92fc\u306f\u3059\u3079\u3066PT\u691c\u67fb\u3067\u691c\u67fb\u53ef\u80fd\u3067\u3059\u3002\u92f3\u9244\u3084\u7c89\u672b\u51b6\u91d1\u90e8\u54c1\u306a\u3069\u306e\u591a\u5b54\u8cea\u6750\u6599\u306f\u3001\u6d78\u900f\u6db2\u304c\u7d30\u5b54\u306b\u5165\u308a\u8fbc\u307f\u3001\u8aa4\u3063\u305f\u6307\u793a\u5024\u3092\u793a\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u4e00\u822c\u7684\u306bPT\u691c\u67fb\u306b\u306f\u9069\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"selection-principle-for-structural-welds\">\u69cb\u9020\u6eb6\u63a5\u90e8\u306e\u9078\u5b9a\u539f\u5247<\/h3>\n\n\n\n<p>GB 50661-2011\u306e8.2.6\u9805\u306b\u3088\u308c\u3070\u3001\u5f37\u78c1\u6027\u6750\u6599\u306e\u8868\u9762\u6b20\u9665\u691c\u67fb\u306b\u306f\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\uff08MT\uff09\u3092\u7528\u3044\u308b\u3079\u304d\u3067\u3042\u308b\u3002MT\u304c\u4f7f\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\uff08PT\uff09\u3092\u7528\u3044\u308b\u3079\u304d\u3067\u3042\u308b\u3002\u4e00\u822c\u7684\u306a\u5929\u4e95\u30af\u30ec\u30fc\u30f3\u304a\u3088\u3073\u51b6\u91d1\u7528\u30af\u30ec\u30fc\u30f3\u69cb\u9020\u306b\u304a\u3044\u3066\u306f\u3001\u70ad\u7d20\u92fc\u304a\u3088\u3073\u4f4e\u5408\u91d1\u92fc\u306e\u6eb6\u63a5\u90e8\u306b\u306f\u901a\u5e38MT\u304c\u7b2c\u4e00\u9078\u629e\u3068\u3057\u3066\u7528\u3044\u3089\u308c\u308b\u304c\u3001\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6eb6\u63a5\u90e8\u304a\u3088\u3073\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u69cb\u9020\u306b\u306fPT\u304c\u7528\u3044\u3089\u308c\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-advantages-and-limitations\">4\uff0e\u5229\u70b9\u3068\u9650\u754c<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u6bd4\u8f03<\/th><th>\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\uff08MT\uff09<\/th><th>\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\uff08PT\uff09<\/th><\/tr><\/thead><tbody><tr><td>\u691c\u67fb\u901f\u5ea6<\/td><td>\u8fc5\u901f\u3067\u3001\u30d0\u30c3\u30c1\u691c\u67fb\u306b\u9069\u3057\u3066\u3044\u307e\u3059<\/td><td>\u6d78\u900f\u3001\u6d17\u6d44\u3001\u5c55\u958b\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u305f\u3081\u3001\u51e6\u7406\u901f\u5ea6\u304c\u9045\u304f\u306a\u308a\u307e\u3059\u3002<\/td><\/tr><tr><td>\u611f\u5ea6<\/td><td>\u8868\u9762\u304a\u3088\u3073\u8868\u9762\u8fd1\u508d\u306e\u4e80\u88c2\u306b\u5bfe\u3059\u308b\u9ad8\u3044\u611f\u5ea6<\/td><td>\u8868\u9762\u6b20\u9665\u306b\u5bfe\u3059\u308b\u9ad8\u3044\u611f\u5ea6<\/td><\/tr><tr><td>\u6599\u91d1<\/td><td>\u901a\u5e38\u306f\u4f4e\u3044<\/td><td>\u6d78\u900f\u5264\u3068\u73fe\u50cf\u5264\u306e\u6d88\u8017\u54c1\u30b3\u30b9\u30c8<\/td><\/tr><tr><td>\u8868\u9762\u8981\u4ef6<\/td><td>\u6cb9\u3001\u9306\u3001\u6eb6\u63a5\u30b9\u30d1\u30c3\u30bf\u3092\u9664\u53bb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/td><td>\u8868\u9762\u306f\u6e05\u6f54\u3067\u4e7e\u71e5\u3057\u3066\u304a\u308a\u3001\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u5264\u306a\u3069\u304c\u4ed8\u7740\u3057\u3066\u3044\u306a\u3044\u72b6\u614b\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/td><\/tr><tr><td>\u691c\u67fb\u5f8c\u306e\u51e6\u7f6e<\/td><td>\u8131\u78c1\u3068\u6d17\u6d44\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/td><td>\u6b8b\u7559\u6d78\u900f\u5264\u3068\u73fe\u50cf\u5264\u3092\u9664\u53bb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/td><\/tr><tr><td>\u5236\u9650\u4e8b\u9805<\/td><td>\u5f37\u78c1\u6027\u6750\u6599\u306e\u307f\u3002\u597d\u307e\u3057\u304f\u306a\u3044\u914d\u5411\u3092\u6301\u3064\u6b20\u9665\u306f\u898b\u9003\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/td><td>\u8868\u9762\u6b20\u9665\u306e\u307f\u306b\u5bfe\u5fdc\u3002\u591a\u5b54\u8cea\u6750\u6599\u306b\u306f\u4e0d\u5411\u304d\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-practical-points-for-crane-weld-inspection\">5. \u30af\u30ec\u30fc\u30f3\u6eb6\u63a5\u691c\u67fb\u306e\u5b9f\u8df5\u7684\u306a\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt\">\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65b9\u5411\u4f9d\u5b58\u6027\u306e\u4e80\u88c2\u3092\u898b\u843d\u3068\u3059\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u3059\u305f\u3081\u3001\u5c11\u306a\u304f\u3068\u3082\u4e92\u3044\u306b\u76f4\u4ea4\u3059\u308b2\u3064\u306e\u78c1\u5316\u65b9\u5411\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u6cb9\u3001\u9306\u3001\u6eb6\u63a5\u30b9\u30d1\u30c3\u30bf\u3092\u9664\u53bb\u3057\u307e\u3059\u3002\u624b\u9806\u306b\u5fdc\u3058\u3066\u3001\u9023\u7d9a\u5f0f\u307e\u305f\u306f\u6b8b\u7559\u5f0f\u306e\u3044\u305a\u308c\u304b\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u8a66\u9a13\u5f8c\u306b\u8131\u78c1\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u86cd\u5149\u7c92\u5b50\u3092\u89b3\u5bdf\u3059\u308b\u5834\u5408\u306f\u7d2b\u5916\u7dda\u3092\u3001\u975e\u86cd\u5149\u7c92\u5b50\u3092\u89b3\u5bdf\u3059\u308b\u5834\u5408\u306f\u9069\u5207\u306a\u767d\u8272\u5149\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1706\" height=\"1136\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-for-Jib-Crane.jpg\" alt=\"\" class=\"wp-image-16537\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-for-Jib-Crane.jpg 1706w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-for-Jib-Crane-1536x1023.jpg 1536w\" sizes=\"(max-width: 1706px) 100vw, 1706px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt\">\u6d78\u900f\u63a2\u50b7\u8a66\u9a13<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6b20\u9665\u90e8\u306e\u958b\u53e3\u90e8\u304c\u585e\u304c\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u6cb9\u3001\u9306\u3001\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u6eb6\u63a5\u30b9\u30e9\u30b0\u3092\u9664\u53bb\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u88fd\u54c1\u306e\u8aac\u660e\u66f8\u304a\u3088\u3073\u624b\u9806\u66f8\u306b\u5f93\u3063\u3066\u3001\u4fdd\u6301\u6642\u9593\u3092\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e00\u822c\u7684\u306b\u306f5\uff5e60\u5206\u3067\u3059\u304c\u3001\u5ba4\u6e29\u3067\u306e\u6eb6\u63a5\u691c\u67fb\u3067\u306f10\uff5e30\u5206\u304c\u3088\u304f\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u30e1\u30fc\u30ab\u30fc\u63a8\u5968\u306e\u6642\u9593\u3088\u308a\u3082\u77ed\u304f\u8a2d\u5b9a\u3057\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>\u4e7e\u71e5\u5de5\u7a0b\u3092\u9664\u304d\u3001\u52a0\u5de5\u5bfe\u8c61\u7269\u3001\u8a66\u9a13\u9762\u3001\u304a\u3088\u3073\u5468\u56f2\u6e29\u5ea6\u306f\u3001\u4e00\u822c\u7684\u306b10\uff5e50\u2103\u3067\u3042\u308b\u3079\u304d\u3067\u3042\u308b\u3002\u6761\u4ef6\u304c\u3053\u306e\u7bc4\u56f2\u5916\u3068\u306a\u308b\u5834\u5408\u306f\u3001GB\/T 18851.5\u304a\u3088\u3073GB\/T 18851.6\u306e\u95a2\u9023\u898f\u5b9a\u3092\u9069\u7528\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u6d17\u6d44\u3057\u3059\u304e\u305f\u308a\u3001\u6d17\u6d44\u4e0d\u8db3\u306b\u306a\u3063\u305f\u308a\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u73fe\u50cf\u6db2\u306f\u8584\u304f\u5747\u4e00\u306b\u5857\u5e03\u3057\u3001\u691c\u67fb\u5f8c\u306f\u6b8b\u7559\u6d78\u900f\u6db2\u3068\u73fe\u50cf\u6db2\u3092\u62ed\u304d\u53d6\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-common-misunderstandings\">6\uff0e\u3088\u304f\u3042\u308b\u8aa4\u89e3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-and-pt-are-interchangeable\">\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\u3068\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u306f\u4e92\u63db\u6027\u304c\u3042\u308b<\/h3>\n\n\n\n<p>\u4e21\u8005\u306f\u7570\u306a\u308a\u307e\u3059\u3002MT\u306f\u5f37\u78c1\u6027\u4f53\u306b\u9650\u5b9a\u3055\u308c\u308b\u306e\u306b\u5bfe\u3057\u3001PT\u306f\u8868\u9762\u7834\u58ca\u6b20\u9665\u306b\u306e\u307f\u611f\u5ea6\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt-can-detect-near-surface-defects\">\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u306f\u3001\u8868\u9762\u8fd1\u508d\u306e\u6b20\u9665\u3092\u691c\u51fa\u3067\u304d\u308b\u3002<\/h3>\n\n\n\n<p>\u305d\u308c\u306f\u4e0d\u53ef\u80fd\u3067\u3059\u3002\u8868\u9762\u4ed8\u8fd1\u306e\u6b20\u9665\u306f\u4e00\u822c\u7684\u306bMT\uff08\u78c1\u7c89\u63a2\u50b7\u6cd5\uff09\u3067\u691c\u67fb\u3055\u308c\u307e\u3059\u304c\u3001\u3088\u308a\u6df1\u3044\u5185\u90e8\u6b20\u9665\u306fUT\uff08\u8d85\u97f3\u6ce2\u63a2\u50b7\u6cd5\uff09\u307e\u305f\u306fRT\uff08\u653e\u5c04\u7dda\u900f\u904e\u6cd5\uff09\u3067\u691c\u67fb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-is-always-more-sensitive-than-pt\">\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\u306f\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u3088\u308a\u3082\u5e38\u306b\u611f\u5ea6\u304c\u9ad8\u3044\u3002<\/h3>\n\n\n\n<p>\u5fc5\u305a\u3057\u3082\u305d\u3046\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002PT\u306f\u8868\u9762\u4e80\u88c2\u306b\u975e\u5e38\u306b\u654f\u611f\u3067\u3059\u304c\u3001MT\u306f\u8868\u9762\u8fd1\u508d\u306e\u6b20\u9665\u3082\u691c\u51fa\u3067\u304d\u307e\u3059\u3002\u5b9f\u969b\u306e\u7d50\u679c\u306f\u3001\u691c\u67fb\u624b\u9806\u3001\u8868\u9762\u72b6\u614b\u3001\u304a\u3088\u3073\u6b20\u9665\u306e\u7279\u6027\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-or-pt-eliminates-the-need-for-internal-inspection\">\u78c1\u7c89\u63a2\u50b7\u8a66\u9a13\u307e\u305f\u306f\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u306b\u3088\u308a\u3001\u5185\u90e8\u691c\u67fb\u306e\u5fc5\u8981\u6027\u304c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/h3>\n\n\n\n<p>\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002MT\u3068PT\u306f\u5185\u90e8\u691c\u67fb\u306e\u4ee3\u308f\u308a\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u5185\u90e8\u306e\u6c17\u5b54\u3001\u30b9\u30e9\u30b0\u4ecb\u5728\u7269\u3001\u6eb6\u878d\u4e0d\u826f\u3001\u5185\u90e8\u4e80\u88c2\u306f\u3001UT\u307e\u305f\u306fRT\u3092\u4f7f\u7528\u3057\u3066\u691c\u67fb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"every-stainless-steel-weld-must-use-pt\">\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306e\u6eb6\u63a5\u90e8\u306f\u3059\u3079\u3066\u6d78\u900f\u63a2\u50b7\u8a66\u9a13\u3092\u5b9f\u65bd\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/h3>\n\n\n\n<p>\u30b0\u30ec\u30fc\u30c9\u304c\u91cd\u8981\u3067\u3059\u3002304\u7cfb\u304a\u3088\u3073316\u7cfb\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u4e00\u822c\u7684\u306b\u975e\u78c1\u6027\u3067\u3042\u308b\u305f\u3081\u3001PT\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002410\u7cfb\u304a\u3088\u3073420\u7cfb\u30de\u30eb\u30c6\u30f3\u30b5\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3068430\u7cfb\u30d5\u30a7\u30e9\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u5f37\u78c1\u6027\u3067\u3042\u308b\u305f\u3081\u3001MT\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u30022205\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3082\u591a\u5c11\u306e\u78c1\u6c17\u53cd\u5fdc\u3092\u793a\u3057\u307e\u3059\u304c\u3001\u305d\u306e\u611f\u5ea6\u306f\u4e00\u822c\u7684\u306b\u70ad\u7d20\u92fc\u3088\u308a\u3082\u4f4e\u3044\u3067\u3059\u3002\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u30b0\u30ec\u30fc\u30c9\u3092\u78ba\u8a8d\u305b\u305a\u306bPT\u306b\u5272\u308a\u5f53\u3066\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">\u7d50\u8ad6<\/h2>\n\n\n\n<p>MT\u3068PT\u306e\u9055\u3044\u306f\u3001\u4ee5\u4e0b\u306e3\u70b9\u306b\u8981\u7d04\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul 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href=\"https:\/\/www.hndfcrane.com\/ja\/overhead-cranes\/\">\u5929\u4e95\u30af\u30ec\u30fc\u30f3<\/a>\u30ac\u30f3\u30c8\u30ea\u30fc\u30af\u30ec\u30fc\u30f3\u3001\u30b8\u30d6\u30af\u30ec\u30fc\u30f3\u306a\u3069\u306e\u69cb\u9020\u7269\u306b\u3064\u3044\u3066\u306f\u3001\u70ad\u7d20\u92fc\u304a\u3088\u3073\u4f4e\u5408\u91d1\u92fc\u306b\u306f\u307e\u305aMT\u691c\u67fb\u3092\u691c\u8a0e\u3057\u3001\u30aa\u30fc\u30b9\u30c6\u30ca\u30a4\u30c8\u7cfb\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u304a\u3088\u3073\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u69cb\u9020\u7269\u306b\u306fPT\u691c\u67fb\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3082\u3001\u5185\u90e8\u6eb6\u63a5\u6b20\u9665\u306e\u691c\u67fb\u306b\u304a\u3051\u308bUT\u691c\u67fb\u307e\u305f\u306fRT\u691c\u67fb\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>","protected":false},"excerpt":{"rendered":"Weld surface inspection is essential for overhead cranes, gantry cranes, jib cranes, and other steel structures. Magnetic particle testing (MT) and penetrant testing (PT) are two commonly used methods. MT relies on a magnetic field, while PT relies on capillary action. MT is limited to ferromagnetic materials, whereas PT has no magnetic-material requirement. Choosing the wrong method may leave a defect undetected. 1. What Do Magnetic Particle Testing and Penetrant Testing Detect? Both methods inspect surface-related defects, but their detection ranges and material requirements are different. ComparisonMagnetic Particle Testing (MT)Penetrant Testing (PT)Detection rangeSurface and near-surface defectsSurface-breaking defects onlyApplicable materialsFerromagnetic materials, such as carbon steel, low-alloy steel, and martensitic or ferritic [&hellip;]","protected":false},"featured_media":16541,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[807],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/xmxposts\/16528"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":11,"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/xmxposts\/16528\/revisions"}],"predecessor-version":[{"id":16542,"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/xmxposts\/16528\/revisions\/16542"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/media\/16541"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/media?parent=16528"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/posts_category?post=16528"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/ja\/wp-json\/wp\/v2\/posts_tag?post=16528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}