{"id":17311,"date":"2026-08-29T07:52:19","date_gmt":"2026-08-29T07:52:19","guid":{"rendered":"https:\/\/www.dgcrane.com\/?post_type=posts&#038;p=17311"},"modified":"2026-08-29T07:52:22","modified_gmt":"2026-08-29T07:52:22","slug":"casting-crane-fatigue-life-analysis","status":"publish","type":"posts","link":"https:\/\/www.dgcrane.com\/vi\/posts\/casting-crane-fatigue-life-analysis\/","title":{"rendered":"Ph\u00e2n t\u00edch tu\u1ed5i th\u1ecd m\u1ecfi c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00fac: C\u1ea5p \u0111\u1ed9 l\u00e0m vi\u1ec7c v\u00e0 tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>M\u1ee5c l\u1ee5c<\/h2><nav><ul><li><a href=\"#overview-for-casting-crane\">T\u1ed5ng quan v\u1ec1 C\u1ea7n c\u1ea9u \u0111\u00fac<\/a><\/li><li><a href=\"#casting-crane-fatigue-life-and-service-life-calculation\">T\u00ednh to\u00e1n tu\u1ed5i th\u1ecd m\u1ecfi v\u00e0 tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00fac<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"overview-for-casting-crane\">T\u1ed5ng quan v\u1ec1 C\u1ea7n c\u1ea9u \u0111\u00fac<\/h2>\n\n\n\n<p>C\u00f4ng ngh\u1ec7 luy\u1ec7n kim hi\u1ec7n \u0111\u1ea1i \u0111\u1eb7t ra nh\u1eefng y\u00eau c\u1ea7u cao h\u01a1n \u0111\u1ed1i v\u1edbi tu\u1ed5i th\u1ecd m\u1ecfi, t\u1ed1c \u0111\u1ed9 n\u00e2ng h\u1ea1 v\u00e0 di chuy\u1ec3n, c\u0169ng nh\u01b0 c\u1ea5p \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00fac. N\u00f3 c\u0169ng \u0111\u01b0a ra nh\u1eefng y\u00eau c\u1ea7u thi\u1ebft k\u1ebf m\u1edbi cho h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng, \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n, h\u1ed9p s\u1ed1 v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c. Khi c\u1ea5p \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed5ng th\u1ec3 c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00fac t\u0103ng l\u00ean, vi\u1ec7c ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng do m\u1ecfi \u1edf c\u00e1c c\u1ea5u ki\u1ec7n k\u1ebft c\u1ea5u ch\u00ednh tr\u1edf n\u00ean thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<p>C\u1ea7n c\u1ea9u \u0111\u00fac d\u00f9ng \u0111\u1ec3 x\u1eed l\u00fd kim lo\u1ea1i n\u00f3ng ch\u1ea3y ho\u1eb7c x\u1ec9 trong s\u1ea3n xu\u1ea5t kim lo\u1ea1i \u0111en v\u00e0 kim lo\u1ea1i m\u00e0u. C\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m n\u1ea1p s\u1eaft n\u00f3ng ch\u1ea3y v\u00e0o l\u00f2 chuy\u1ec3n \u0111\u1ed5i, chuy\u1ec3n g\u00e1o ch\u1ee9a \u0111\u1ebfn th\u00e1p \u0111\u00fac li\u00ean t\u1ee5c v\u00e0 di chuy\u1ec3n g\u00e1o ch\u1ee9a \u0111\u1ebfn l\u00f2 tinh luy\u1ec7n. Do c\u00e1c ho\u1ea1t \u0111\u1ed9ng n\u00e0y \u0111\u00f2i h\u1ecfi kh\u1eaft khe, c\u1ea7n c\u1ea9u \u0111\u00fac th\u01b0\u1eddng c\u00f3 c\u1ea5p \u0111\u1ed9 ch\u1ecbu t\u1ea3i t\u1ed5ng th\u1ec3 l\u00e0 A6\u2013A8.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1068\" height=\"712\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/08\/metallurgical-casting-crane_english.png\" alt=\"\" class=\"wp-image-17318\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"casting-crane-fatigue-life-and-service-life-calculation\">T\u00ednh to\u00e1n tu\u1ed5i th\u1ecd m\u1ecfi v\u00e0 tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00fac<\/h2>\n\n\n\n<p>Vi\u1ec7c v\u1eadn h\u00e0nh c\u1ea7n c\u1ea9u \u0111\u00fac \u0111\u00e1ng tin c\u1eady ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m thi\u1ebft k\u1ebf, ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t, \u0111\u1ed9 ch\u00ednh x\u00e1c l\u1eafp \u0111\u1eb7t, \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh, quy tr\u00ecnh l\u00e0m vi\u1ec7c v\u00e0 b\u1ea3o tr\u00ec.<\/p>\n\n\n\n<p>Theo Quy chu\u1ea9n thi\u1ebft k\u1ebf c\u1ea7n c\u1ea9u Trung Qu\u1ed1c GB\/T 3811-2008, c\u1ea5p \u0111\u1ed9 l\u00e0m vi\u1ec7c c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u1ea5p \u0111\u1ed9 ph\u1ed5 t\u1ea3i v\u00e0 c\u1ea5p \u0111\u1ed9 s\u1eed d\u1ee5ng. C\u1ea5p \u0111\u1ed9 ph\u1ed5 t\u1ea3i th\u1ec3 hi\u1ec7n m\u1ed1i quan h\u1ec7 gi\u1eefa t\u1ea3i tr\u1ecdng n\u00e2ng v\u00e0 kh\u1ea3 n\u0103ng n\u00e2ng \u0111\u1ecbnh m\u1ee9c. C\u1ea5p \u0111\u1ed9 s\u1eed d\u1ee5ng th\u1ec3 hi\u1ec7n t\u1ed5ng s\u1ed1 chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng t\u1eeb khi \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng \u0111\u1ebfn khi ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. B\u1ea3ng 1 tr\u00ecnh b\u00e0y c\u00e1c c\u1ea5p \u0111\u1ed9 ph\u1ed5 t\u1ea3i v\u00e0 h\u1ec7 s\u1ed1 ph\u1ed5 t\u1ea3i Kp c\u1ee7a c\u1ea7n c\u1ea9u, trong khi B\u1ea3ng 2 tr\u00ecnh b\u00e0y c\u00e1c c\u1ea5p \u0111\u1ed9 s\u1eed d\u1ee5ng c\u1ee7a c\u1ea7n c\u1ea9u.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/08\/crane-load-spectrum-classes_english.png\" alt=\"\" class=\"wp-image-17319\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/08\/crane-utilization-classes_english.png\" alt=\"\" class=\"wp-image-17320\"><\/figure>\n\n\n\n<p>C\u00e1c c\u1ea5p \u0111\u1ed9 v\u1eadn h\u00e0nh c\u1ee7a c\u1ea7n c\u1ea9u dao \u0111\u1ed9ng t\u1eeb A1 \u0111\u1ebfn A8. B\u1ea3ng 3 th\u1ec3 hi\u1ec7n m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa c\u1ea5p \u0111\u1ed9 v\u1eadn h\u00e0nh, c\u1ea5p \u0111\u1ed9 ph\u1ed5 t\u1ea3i v\u00e0 c\u1ea5p \u0111\u1ed9 s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/08\/crane-duty-class_english.png\" alt=\"\" class=\"wp-image-17321\"><\/figure>\n\n\n\n<p>C\u00e1c b\u1ea3ng n\u00e0y cho th\u1ea5y tu\u1ed5i th\u1ecd c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng t\u1ed5ng s\u1ed1 chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng. N\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5p \u0111\u1ed9 l\u00e0m vi\u1ec7c v\u00e0 t\u1ef7 l\u1ec7 gi\u1eefa t\u1ea3i tr\u1ecdng n\u00e2ng \u0111i\u1ec3n h\u00ecnh v\u00e0 kh\u1ea3 n\u0103ng n\u00e2ng \u0111\u1ecbnh m\u1ee9c. C\u1ea7n c\u1ea9u \u0111\u00fac th\u01b0\u1eddng x\u1eed l\u00fd t\u1ea3i tr\u1ecdng \u1edf m\u1ee9c ho\u1eb7c g\u1ea7n m\u1ee9c \u0111\u1ecbnh m\u1ee9c, v\u00ec v\u1eady c\u1ea5p \u0111\u1ed9 ph\u1ed5 t\u1ea3i c\u1ee7a n\u00f3 th\u01b0\u1eddng l\u00e0 Q4 v\u00e0 c\u1ea5p \u0111\u1ed9 l\u00e0m vi\u1ec7c th\u01b0\u1eddng l\u00e0 A7. \u0110\u1ed1i v\u1edbi Q4 v\u00e0 A7, B\u1ea3ng 3 \u0111\u01b0a ra c\u1ea5p \u0111\u1ed9 s\u1eed d\u1ee5ng l\u00e0 U5. B\u1ea3ng 2 sau \u0111\u00f3 \u0111\u01b0a ra t\u1ed5ng ph\u1ea1m vi chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng l\u00e0 2,5 x 10.000 chu k\u1ef3.<sup>5<\/sup> \uff1c CT \u2264 5 X 10<sup>5<\/sup>.<\/p>\n\n\n\n<p>Vi\u1ec7c qu\u00e1 t\u1ea3i kh\u00f4ng th\u01b0\u1eddng xuy\u00ean ho\u1eb7c th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ed5ng s\u1ed1 chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5: C\u1ea7n c\u1ea9u \u0111\u00fac A7 d\u00f9ng \u0111\u1ec3 n\u1ea1p li\u1ec7u v\u00e0o l\u00f2 chuy\u1ec3n \u0111\u1ed5i ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c 24 gi\u1edd m\u1ed9t ng\u00e0y v\u00e0 330 ng\u00e0y m\u1ed9t n\u0103m. 35 ng\u00e0y c\u00f2n l\u1ea1i d\u00e0nh cho vi\u1ec7c \u0111\u1ea1i tu v\u00e0 ki\u1ec3m tra l\u00f2 h\u00e0ng n\u0103m, b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 v\u00e0 s\u1eeda ch\u1eefa \u0111\u1ed9t xu\u1ea5t.<\/p>\n\n\n\n<p>Theo ti\u00eau chu\u1ea9n n\u00e0y, hai ph\u00e2n lo\u1ea1i cao nh\u1ea5t \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0 U6, Q3, A7 cho to\u00e0n b\u1ed9 c\u1ea7n c\u1ea9u (T6, L3, M7 cho c\u01a1 c\u1ea5u n\u00e2ng h\u1ea1 ch\u00ednh) v\u00e0 U5, Q4, A7 cho to\u00e0n b\u1ed9 c\u1ea7n c\u1ea9u (T5, L4, M7 cho c\u01a1 c\u1ea5u n\u00e2ng h\u1ea1 ch\u00ednh).<\/p>\n\n\n\n<p>T\u1ed5ng s\u1ed1 chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng \u1ee9ng l\u00e0 500.000\u20131.000.000 \u0111\u1ed1i v\u1edbi U6 v\u00e0 250.000\u2013500.000 \u0111\u1ed1i v\u1edbi U5.<\/p>\n\n\n\n<p>V\u1edbi s\u00e1u chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng m\u1ed7i gi\u1edd, tu\u1ed5i th\u1ecd thi\u1ebft k\u1ebf \u01b0\u1edbc t\u00ednh l\u00e0 12 n\u0103m.<\/p>\n\n\n\n<p>Cr = 6 \u00d7 24 \u00d7 330 \u00d7 12 = 570.240 chu k\u1ef3.<\/p>\n\n\n\n<p>K\u1ebft qu\u1ea3 n\u00e0y n\u1eb1m trong ph\u1ea1m vi tu\u1ed5i th\u1ecd thi\u1ebft k\u1ebf \u0111\u1ed1i v\u1edbi m\u1ed9t ph\u00e2n lo\u1ea1i v\u00e0 v\u01b0\u1ee3t qu\u00e1 ph\u1ea1m vi \u0111\u00f3 \u0111\u1ed1i v\u1edbi ph\u00e2n lo\u1ea1i c\u00f2n l\u1ea1i, trong khi c\u1ea3 hai ph\u00e2n lo\u1ea1i \u0111\u1ec1u tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf. Tr\u00ean th\u1ef1c t\u1ebf, nhi\u1ec1u c\u1ea7n c\u1ea9u \u0111\u00fac n\u1ea1p li\u1ec7u l\u00f2 chuy\u1ec3n \u0111\u1ed5i ho\u1ea1t \u0111\u1ed9ng g\u1ea7n m\u1ee9c A8 trong th\u1eddi k\u1ef3 s\u1ea3n xu\u1ea5t th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao. C\u00e1c t\u1ed5 h\u1ee3p c\u1ea5p t\u1ea3i \u0111\u00e3 n\u00eau kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3, v\u00e0 c\u00e1c h\u01b0 h\u1ecfng do m\u1ecfi k\u1ebft c\u1ea5u x\u1ea3y ra th\u01b0\u1eddng xuy\u00ean.<\/p>\n\n\n\n<p>Tu\u1ed5i th\u1ecd thi\u1ebft k\u1ebf c\u1ee7a c\u1ea7n c\u1ea9u ph\u1ee5 thu\u1ed9c ch\u1eb7t ch\u1ebd v\u00e0o t\u1ea7n su\u1ea5t v\u1eadn h\u00e0nh, t\u1ea3i tr\u1ecdng, quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 b\u1ea3o tr\u00ec. V\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd, trong khi c\u00e1c thao t\u00e1c kh\u00f4ng \u0111\u00fang s\u1ebd l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd. Do \u0111\u00f3, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean xem x\u00e9t c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf v\u00e0 th\u1ea3o lu\u1eadn r\u00f5 r\u00e0ng v\u1edbi ng\u01b0\u1eddi s\u1eed d\u1ee5ng trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf.<\/p>","protected":false},"excerpt":{"rendered":"T\u1ed5ng quan v\u1ec1 C\u1ea7n c\u1ea9u \u0111\u00fac C\u00f4ng ngh\u1ec7 luy\u1ec7n kim hi\u1ec7n \u0111\u1ea1i \u0111\u1eb7t ra nh\u1eefng y\u00eau c\u1ea7u cao h\u01a1n \u0111\u1ed1i v\u1edbi tu\u1ed5i th\u1ecd m\u1ecfi, t\u1ed1c \u0111\u1ed9 n\u00e2ng h\u1ea1 v\u00e0 di chuy\u1ec3n, c\u0169ng nh\u01b0 c\u1ea5p \u0111\u1ed9 t\u1ea3i c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00fac. N\u00f3 c\u0169ng \u0111\u01b0a ra nh\u1eefng y\u00eau c\u1ea7u thi\u1ebft k\u1ebf m\u1edbi cho h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng, \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n, h\u1ed9p s\u1ed1 v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c. Khi c\u1ea5p \u0111\u1ed9 t\u1ea3i t\u1ed5ng th\u1ec3 c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00fac t\u0103ng l\u00ean, vi\u1ec7c ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng do m\u1ecfi \u1edf c\u00e1c c\u1ea5u ki\u1ec7n k\u1ebft c\u1ea5u ch\u00ednh tr\u1edf n\u00ean thi\u1ebft y\u1ebfu [\u2026]","protected":false},"featured_media":17318,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[351],"posts_tag":[1067,206,6],"class_list":["post-17311","posts","type-posts","status-publish","has-post-thumbnail","hentry","posts_category-blog","posts_tag-casting-crane","posts_tag-dgcrane","posts_tag-overhead-crane"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/17311"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":2,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/17311\/revisions"}],"predecessor-version":[{"id":17322,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/17311\/revisions\/17322"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/media\/17318"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/media?parent=17311"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts_category?post=17311"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts_tag?post=17311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}