{"id":268,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/thermal-bow\/"},"modified":"2026-05-23T23:06:51","modified_gmt":"2026-05-23T23:06:51","slug":"thermal-bow","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/hr\/glossary\/thermal-bow\/","title":{"rendered":"\u0160to je termalni luk? Savijanje osovine uzrokovano temperaturom"},"content":{"rendered":"<h1>Razumijevanje termalnog luka u rotiraju\u0107im strojevima<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kompletan set prijenosnog balansera i analizatora vibracija\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija Balanset-1A\">Portable balancer &amp; Vibration analyzer Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Detalj senzora vibracija Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">senzor vibracija<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Opti\u010dki senzor (laserski tahometar)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">Opti\u010dki senzor (laserski tahometar)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera komplet za balansiranje rotora: torba za no\u0161enje, vi\u0161ekanalni pretvara\u010d signala, ru\u010dni analizator, magnetska baza, senzori vibracija i spiralni kabeli.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Dodaj u ko\u0161aricu: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 60 kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Magnetska baza.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 60 kgf\">Magnetski stalak Insize nosivosti 60 kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Reflektiraju\u0107a traka\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">Reflektiraju\u0107a traka<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sadr\u017eaj kompleta Balanset-1A s jedinicom za su\u010delje, senzorima, tahometrom i dodacima\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM\">Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Dodaj u ko\u0161aricu: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Toplinsko savijanje vratila<\/strong> (tako\u0111er se naziva vru\u0107i luk, toplinsko savijanje ili temperaturno inducirani luk osovine) je privremena zakrivljenost koja se razvija u <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor\/\">rotor<\/a> vratila kada temperatura nije jednolika oko njegovih krugnih presjeka. Kada je jedna strana vratila toplja od suprotne strane, toplija strana se \u0161iri vi\u0161e, produljava se, i tjera vratilo u luk s toplijom stranom na konveksnoj (vanjskoj) plohi krivulje. Za razliku od trajnog <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/shaft-bow\/\">luk osovine<\/a> koji slijedi mehansku \u0161tetu, toplinska deformacija je reverzibilna: nestaje \u010dim se vratilo vra\u0107a na jednoliku temperaturu. Unato\u010d tome, mo\u017ee izazvati sna\u017enu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration\/\">vibracija<\/a> tijekom zagrijavanja i hla\u0111enja, a ako je te\u0161ka ili se bez prestanka ponavlja, mo\u017ee ostaviti trajnu \u0161tetu u svojoj tradi.<\/p>\n<h2>1. Definicija: \u0160to je toplinska deformacija<\/h2>\n<p>Toplinska deformacija se najbolje mo\u017ee smatrati privremenom geometrijskom gre\u0161kom. Vratilo se nije plasti\u010dno deformiralo i nema ni\u010dega pogre\u0161nog s raspodelom njegove mase; jednostavno se savija, u realnom vremenu, zbog gradijenta temperature preko njegovog promjera. Budu\u0107i da je savijanje geometrijsko i rotira s vratilom, rezultiraju\u0107a vibracija se nalazi na <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/running-speed\/\">radna brzina<\/a> i izgleda, na spektru, gotovo to\u010dno kao <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/unbalance\/\">neravnote\u017ea<\/a>. Klju\u010dna razlika je \u0161to toplinska deformacija dolazi i odlazi s temperaturom, dok je neuravnote\u017eenost fiksna. Jedan jedini bihevioralni signal \u2014 vibracija koja prati toplinsko stanje stroja umjesto njegove brzine \u2014 je nit koja rasplitava cijelu dijagnozu.<\/p>\n<h2>2. Fizi\u010dki mehanizam<\/h2>\n<h3>2.1 Diferencijalna toplinska ekspanzija<\/h3>\n<p>Fizika iza termalnog luka je jednostavna:<\/p>\n<ul>\n<li>Metal se \u0161iri pri zagrijavanju (koeficijent toplinskog \u0161irenja za \u010delik tipi\u010dno je 10\u201315 \u00b5m\/m\/\u00b0C).<\/li>\n<li>Ako je temperatura jednolika oko krugnog presjeka, ekspanzija je simetri\u010dna \u2014 vratilo se jednostavno produljava ali ostaje ravno.<\/li>\n<li>Ako je jedna strana toplija, ta se strana \u0161iri vi\u0161e od hladnije strane<\/li>\n<li>Diferencijalna ekspanzija uzrokuje zakrivljenost.<\/li>\n<li>Veli\u010dina deformacije je proporcionalna kako razlici temperature tako i duljini vratila.<\/li>\n<\/ul>\n<p>Isti koeficijent koji upravlja ovim gradijentom tako\u0111er vodi aksijalni rast i promjene stezanja koje in\u017eenjeri ra\u010dunaju drugdje; temeljna aritmetika je identi\u010dna onoj u <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/thermal-expansion-calculator\/\">Kalkulator toplinskog \u0161irenja<\/a>, primijenjena preko promjera umjesto du\u017e duljine.<\/p>\n<h3>2.2 Tipi\u010dne temperaturne razlike<\/h3>\n<ul>\n<li>Temperaturna razlika od 10\u201320\u00b0C preko promjera mo\u017ee stvoriti mjerljivu fleksiju osovine.<\/li>\n<li>U velikim turbinama, razlika od 30\u201350\u00b0C mo\u017ee proizvesti ozbiljnu vibraciju.<\/li>\n<li>U\u010dinak se akumulira du\u017e duljine osovine, pa su dulje osovine inherentno osjetljivije.<\/li>\n<\/ul>\n<h2>3. \u010cesti uzroci termalne fleksije osovine<\/h2>\n<h3>3.1 Uvjeti prilikom pokretanja (Naj\u010de\u0161\u0107i)<\/h3>\n<ul>\n<li><strong>Asimetri\u010dno zagrijavanje:<\/strong> vru\u0107a para, plin ili procesni fluid dolaze u doticaj s vrhom osovine dok dno ostaje hladnije.<\/li>\n<li><strong>Toplinsko zra\u010denje:<\/strong> toplina iz vro\u010dih ku\u0107i\u0161ta ili cijevi zagrijava gornji dio osovine.<\/li>\n<li><strong>Trenje u le\u017eaju:<\/strong> jedan le\u017eaj koji radi toplije od ostalih zagrijava svoj lokalni dio osovine.<\/li>\n<li><strong>Brzo pokretanje:<\/strong> nedovoljan vrijeme zagrijavanja dozvoljava da se toplinski gradijenti grade prije nego \u0161to se mogu izjedna\u010diti.<\/li>\n<\/ul>\n<h3>3.2 Uvjeti prilikom zaustavljanja (Toplinska progibanja)<\/h3>\n<ul>\n<li><strong>Vru\u0107e zaustavljanje:<\/strong> osovina se zaustavlja dok je jo\u0161 vru\u0107a.<\/li>\n<li><strong>Gravitacijska progibanja:<\/strong> toplina se di\u017ee, pa se vrh vodoravne osovine hladi br\u017ee nego dno.<\/li>\n<li><strong>Toplinska fleksija osovine:<\/strong> dno ostaje toplije du\u017ee, pa se osovina savija prema dolje.<\/li>\n<li><strong>Kriti\u010dno razdoblje:<\/strong> nekoliko prvih sati nakon zaustavljanja.<\/li>\n<\/ul>\n<h3>3.3 Uzroci tijekom rada<\/h3>\n<ul>\n<li><strong>Trenje izme\u0111u rotora i statora:<\/strong> trenje od kontakta stvara intenzivno lokalno zagrijavanje \u2014 samooja\u0107avaju\u0107i mehanizam istra\u017een pod <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor-rub\/\">trljanje rotora<\/a>.<\/li>\n<li><strong>Neravnomjerno hla\u0111enje:<\/strong> asimetri\u010dna struja hladnog zraka ili vodeni raspr\u0161iva\u010d.<\/li>\n<li><strong>Sun\u010devo zagrijavanje:<\/strong> vanjska oprema s suncem na jednoj strani.<\/li>\n<li><strong>Poreme\u0107aji u procesu:<\/strong> nagle promjene temperature radne teku\u0107ine.<\/li>\n<\/ul>\n<p>Slu\u010daj dodira rotora zahtijeva poseban oprez. Lagani dodir zagrijava jedno mjesto, \u0161to savija vratilo, koje to mjesto jo\u0161 ja\u010de priti\u0161\u0107e uz brtvu, pa ga dodatno zagrijava \u2014 povratna sprega koja izmi\u010de kontroli (ponekad nazvana Newkirkov efekt) i mo\u017ee u nekoliko minuta pretvoriti manji kontakt u jake vibracije.<\/p>\n<h2>4. Simptomi i detekcija<\/h2>\n<h3>4.1 Karakteristike vibracija<\/h3>\n<p>Toplinski luk stvara karakteristi\u010dan skup simptoma:<\/p>\n<ul>\n<li><strong>Frekvencija:<\/strong> 1\u00d7 brzina vrtnje \u2014 klasi\u010dna <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/synchronous-vibration\/\">sinkrone vibracije<\/a>.<\/li>\n<li><strong>Vremenski raspored:<\/strong> visoka tijekom zagrijavanja, pada kako se postigne toplinska ravnote\u017ea.<\/li>\n<li><strong>Promjene faze:<\/strong> on <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase-angle\/\">fazni kut<\/a> mijenja se kako se luk razvija i zatim gubi.<\/li>\n<li><strong>Vibracije pri sporo okretanju:<\/strong> visoka vibracija \u010dak i pri vrlo niskoj brzini, za razliku od <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/unbalance\/\">neravnote\u017ea<\/a>.<\/li>\n<li><strong>Izgled:<\/strong> izgleda kao neuravnote\u017eenost, ali je ovisna o temperaturi.<\/li>\n<\/ul>\n<h3>4.2 Razlikovanje toplinskog luka od neuravnote\u017eenosti<\/h3>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Karakteristi\u010dno<\/th>\n<th>Neravnote\u017ea<\/th>\n<th>Termalni luk<\/th>\n<\/tr>\n<tr>\n<td>Frekvencija<\/td>\n<td>1\u00d7 brzina tr\u010danja<\/td>\n<td>1\u00d7 brzina tr\u010danja<\/td>\n<\/tr>\n<tr>\n<td>Osjetljivost na temperaturu<\/td>\n<td>Relativno stabilno<\/td>\n<td>Visoko tijekom zagrijavanja\/hla\u0111enja<\/td>\n<\/tr>\n<tr>\n<td>Spora vrtnja (50\u2013200 RPM)<\/td>\n<td>Vrlo niska amplituda<\/td>\n<td>Visoka amplituda<\/td>\n<\/tr>\n<tr>\n<td>Faza u odnosu na temperaturu<\/td>\n<td>Konstanta<\/td>\n<td>Mijenja se kako se luk razvija<\/td>\n<\/tr>\n<tr>\n<td>Upornost<\/td>\n<td>Konstantno u svakom trenutku<\/td>\n<td>Privremeno, nestaje u termalnoj ravnote\u017ei<\/td>\n<\/tr>\n<tr>\n<td>Odgovor na uravnote\u017eenje<\/td>\n<td>Smanjene vibracije<\/td>\n<td>Minimalno ili nikakvo pobolj\u0161anje<\/td>\n<\/tr>\n<\/table>\n<p>Prikaz amplitude i faze u odnosu na vrijeme \u2014 ili u odnosu na temperaturu le\u017eaja \u2014 pretvara te redove tablice u nepogre\u0161ivu sliku: vektor koji oscilira kako se rotor zagrijava pa se zatim smiruje je termi\u010dka krivulja vratila, dok je vektor koji miruje neuravnote\u017eenost. A <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/polar-plot\/\">polarni dijagram<\/a> snimljeno tijekom <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/startup-vibration\/\">pokretanje<\/a> pokazuje tu migraciju na prvi pogled.<\/p>\n<h3>4.3 Dijagnosti\u010dki testovi<\/h3>\n<h4>4.3.1 Test vibracije pri malim brzinama vrtnje<\/h4>\n<ul>\n<li>Okre\u0107ite vratilo na 5\u201310% radne brzine.<\/li>\n<li>Mjerenje vibracija i <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/run-out\/\">radijalno odstupanje<\/a>.<\/li>\n<li>Visoke vibracije pri malim brzinama vrtnje ukazuju na termi\u010dku ili mehani\u010dku krivulju vratila, ne na neuravnote\u017eenost, \u010dija je sila zanemariva pri tako niskoj brzini.<\/li>\n<\/ul>\n<h4>4.3.2 Nadzor temperature<\/h4>\n<ul>\n<li>Pratite temperaturu vratila ili le\u017eaja tijekom pokretanja, idealno s dediciranoga <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/temperature-sensor\/\">senzor temperature<\/a> na nekoliko mjesta.<\/li>\n<li>Izmjerite temperaturu na vi\u0161e mjesta oko opsega le\u017eaja<\/li>\n<li>Pove\u017eite promjene vibracije s mjerenim gradijentima temperature.<\/li>\n<\/ul>\n<h4>4.3.3 Pra\u0107enje vibracije tijekom pokretanja<\/h4>\n<ul>\n<li>Ucrtajte amplitudu vibracije u odnosu na vrijeme tijekom zagrijavanja.<\/li>\n<li>Termi\u010dka krivulja vratila: visoka u po\u010detku, zatim se smanjuje kako se pribli\u017eavamo ravnote\u017ei.<\/li>\n<li>Neuravnote\u017eenost: raste s brzinom i neovisna je o temperaturi.<\/li>\n<\/ul>\n<h2>5. Strategije prevencije<\/h2>\n<h3>5.1 Operativni postupci<\/h3>\n<h4>5.1.1 Pravilni postupci zagrijavanja<\/h4>\n<ul>\n<li><strong>Postupno povi\u0161enje temperature:<\/strong> pustite vratilo da se jednoliko zagrijava.<\/li>\n<li><strong>Produljeno zagrijavanje:<\/strong> velike turbine mogu trebati 2\u20134 sata.<\/li>\n<li><strong>Nadzor temperature:<\/strong> pratite temperaturu le\u017eaja i ku\u0107i\u0161ta.<\/li>\n<li><strong>Pra\u0107enje vibracija:<\/strong> pratite vibracije tijekom zagrijavanja i odlo\u017eite pove\u0107anje brzine ako su visoke.<\/li>\n<\/ul>\n<h4>5.1.2 Pogon rotacijskog mehanizma<\/h4>\n<ul>\n<li>Za velike turbine, pogonite rotacijski mehanizam (spora rotacija, oko 3\u201310 o\/min) tijekom zagrijavanja i hla\u0111enja.<\/li>\n<li>Kontinuirana rotacija sprje\u010dava toplinsku deformaciju ravnomjernom distribucijom topline oko oboda.<\/li>\n<li>Ovo je industrijska standardna praksa za parne turbine iznad 50 MW.<\/li>\n<li>Rotacijski mehanizam mo\u017ee raditi 8\u201324 sata tijekom hla\u0111enja.<\/li>\n<\/ul>\n<h4>5.1.3 Postupci ga\u0161enja<\/h4>\n<ul>\n<li><strong>Postupno hla\u0111enje:<\/strong> Polako smanjite optere\u0107enje i temperaturu prije isklju\u010divanja<\/li>\n<li><strong>Produljeno rotiranje:<\/strong> dr\u017eite rotor u rotaciji tijekom hla\u0111enja.<\/li>\n<li><strong>Izbjegavajte ga\u0161enja u vru\u0107e stanje:<\/strong> Zaustavljanje u nu\u017edi ostavlja osovinu vru\u0107om i sklonom progibu<\/li>\n<\/ul>\n<h3>5.2 Mjere pri projektiranju<\/h3>\n<ul>\n<li><strong>Toplinska izolacija:<\/strong> izolirajte ku\u0107i\u0161ta kako bi se odr\u017eala ujedna\u010dena temperatura.<\/li>\n<li><strong>Toplinske jakne:<\/strong> vanjski grija\u010di za ujedna\u010deno predgrijavanje.<\/li>\n<li><strong>Odvodnjavanje:<\/strong> sprije\u010diti prihva\u0107anje vru\u0107eg kondenzata na dnu vratila.<\/li>\n<li><strong>Ventilacija:<\/strong> osigurati simetri\u010dni tok zraka za hla\u0111enje.<\/li>\n<\/ul>\n<h2>6. Posljedice toplinskog izduljivanja<\/h2>\n<h3>6.1 Neposredni u\u010dinci<\/h3>\n<ul>\n<li><strong>Visoke vibracije:<\/strong> mogu dosegnuti 5\u201310\u00d7 normalne razine tijekom zagrijavanja i dramati\u010dno se amplificiraju ako izduljenje forsira rotor kroz <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/critical-speed\/\">kriti\u010dna brzina<\/a>.<\/li>\n<li><strong>Optere\u0107enje le\u017eaja:<\/strong> asimetri\u010dno izduljenje pove\u0107ava optere\u0107enja le\u017eajeva.<\/li>\n<li><strong>Trljanje brtve:<\/strong> Otklon osovine mo\u017ee uzrokovati kontakt s brtvama ili nepokretnim dijelovima<\/li>\n<li><strong>Ka\u0161njenja pri pokretanju:<\/strong> posada mora \u010dekati da vibracije padnu prije nego \u0161to pove\u0107a brzinu.<\/li>\n<\/ul>\n<h3>6.2 Dugoro\u010dna o\u0161te\u0107enja<\/h3>\n<ul>\n<li><strong>Tro\u0161enje le\u017eajeva:<\/strong> ponavljaju\u0107e visoke vibracije ubrzavaju <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bearing-wear\/\">istro\u0161enost le\u017eaja<\/a>.<\/li>\n<li><strong>\u0160teta od brtvila:<\/strong> ponavljaju\u0107i kontakti uni\u0161tavaju komponente brtvila.<\/li>\n<li><strong>Umor:<\/strong> cikli\u010dka savojna naprezanja svakog pokretanja doprinjose <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/fatigue\/\">umor<\/a> tijekom \u017eivotnog vijeka rotora.<\/li>\n<li><strong>Trajna deformacija:<\/strong> te\u0161ko ili ponavljano toplinsko izduljenje mo\u017ee na kraju uzrokovati trajnu plasti\u010dnu deformaciju \u2014 \u0161to zna\u010di da se reverzibilna gre\u0161ka pretvorila u trajnu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/shaft-bow\/\">luk osovine<\/a>.<\/li>\n<\/ul>\n<h2>7. Korekcija i ubla\u017eavanje<\/h2>\n<h3>7.1 Za aktivno toplinsko savijanje<\/h3>\n<ul>\n<li><strong>Ostavite vrijeme:<\/strong> Pri\u010dekajte toplinsku ravnote\u017eu prije pove\u0107anja brzine<\/li>\n<li><strong>Sporo okretanje:<\/strong> polako rotirati kako bi se toplina redistribuirala gdje je mogu\u0107e.<\/li>\n<li><strong>Nemojte poku\u0161avati balansiranje:<\/strong> <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/balancing\/\">balansiranje<\/a> ne mo\u017ee ispraviti toplinsko izduljenje i bit \u0107e neu\u010dinkovito.<\/li>\n<li><strong>Adresurajte izvor topline:<\/strong> identificirajte i uklonite asimetri\u010dno zagrijavanje.<\/li>\n<\/ul>\n<h3>7.2 Za toplinsku upalu vrata (nakon ga\u0161enja)<\/h3>\n<ul>\n<li><strong>Zup\u010danik za okretanje:<\/strong> rotator dr\u017eite spora brzine tijekom hla\u0111enja.<\/li>\n<li><strong>Produljeno vrijeme vrtnje:<\/strong> mo\u017ee biti potrebno 12\u201324 sata rada s pokretnim zup\u010danikom.<\/li>\n<li><strong>Nadzor temperature:<\/strong> nastavite dok temperatura osovine nije ujedna\u010dena.<\/li>\n<li><strong>Odgo\u0111eni ponovno pokretanje:<\/strong> Ako se pojavio luk, pri\u010dekajte prirodno ispravljanje prije ponovnog pokretanja<\/li>\n<\/ul>\n<h2>8. Razmatranja specifi\u010dna za industriju<\/h2>\n<h3>8.1 Parni turbini<\/h3>\n<ul>\n<li>Najosjetljivije stroje zbog visokih temperatura i masivnih rotora.<\/li>\n<li>Detaljni postupci zagrijavanja i hla\u0111enja su standardna praksa.<\/li>\n<li>Pokretni zup\u010danik je obavezan za jedinice iznad 50 MW.<\/li>\n<li>Mogu trebati 2\u20134 sata zagrijavanja i 12\u201324 sata hla\u0111enja na pokretnom zup\u010daniku.<\/li>\n<\/ul>\n<h3>8.2 Plinski turbini<\/h3>\n<ul>\n<li>Br\u017ei toplinskim odgovor zbog manjeg rotor mase.<\/li>\n<li>Toplinska uplata pri pokretanju je rje\u0111a, ali i dalje mogu\u0107a.<\/li>\n<li>Zagrijavanje na strani izgaranja mo\u017ee stvoriti obodne asimetrije.<\/li>\n<li>Ciklusi zagrijavanja su obi\u010dno br\u017ei nego za parne turbine.<\/li>\n<\/ul>\n<h3>8.3 Veliki elektri\u010dni motori i generatori<\/h3>\n<ul>\n<li>Toplinska deformacija mo\u017ee nastati od topline namotaja rotora ili trenja u le\u017eaju.<\/li>\n<li>Vanjska postrojenja su izlo\u017eena solarnom zagrijavanju s jedne strane.<\/li>\n<li>Prije pokretanja mo\u017ee biti potrebno polako okretanje ili zagrijavanje.<\/li>\n<\/ul>\n<h2>9. Nadzor i alarmi<\/h2>\n<h3>9.1 Klju\u010dni parametri nadzora<\/h3>\n<ul>\n<li><strong>Vibracije pri sporo okretanju:<\/strong> mjerenje pri niskoj brzini prije normalnog pokretanja.<\/li>\n<li><strong>Temperaturna razlika le\u017eaja:<\/strong> usporedba temperatura na vrhu i na dnu.<\/li>\n<li><strong>Vibracija u odnosu na temperaturu:<\/strong> prikaz amplitude u odnosu na temperaturu le\u017eaja.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase\/\">Fazni kut<\/a>:<\/strong> pra\u0107enje promjena faze koja signalizira razvijaju\u0107u deformaciju.<\/li>\n<\/ul>\n<h3>9.2 Kriteriji alarma<\/h3>\n<ul>\n<li>Vibracija pri sporom okretanju ve\u0107a od 2\u00d7 bazne vrijednosti aktivira alarm.<\/li>\n<li>Temperaturna razlika ve\u0107a od 15\u201320\u00b0C ukazuje na termi\u010dku neuravnote\u017eenost.<\/li>\n<li>Brze promjene faze (vi\u0161e od 30\u00b0 u 10 minuta) upu\u0107uju na razvijaju\u0107e savijanje.<\/li>\n<li>Vibracije se pove\u0107avaju tijekom zagrijavanja, a ne smanjuju<\/li>\n<\/ul>\n<p>Ti kriteriji se prirodno uklapaju u \u0161iri <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/condition-monitoring\/\">pra\u0107enje stanja<\/a> program, gdje se podaci pokretanja i pada bilje\u017ee kao <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/transient-vibration\/\">prolazne vibracije<\/a> zapisi umjesto snimaka u stacionarnom stanju.<\/p>\n<h2>10. Napredne strategije pokretanja<\/h2>\n<h3>10.1 Kontrolirano ubrzanje<\/h3>\n<ol>\n<li><strong>Po\u010detno polako okretanje:<\/strong> verificirali prihvatljivu vibraciju na 100\u2013200 o\/min.<\/li>\n<li><strong>Postepeno ubrzavanje:<\/strong> pre\u0107i na me\u0111ubrzine (npr. 30%, 50%, 70% normalnih) sa zadr\u0161kama.<\/li>\n<li><strong>Periodi toplinske stabilizacije:<\/strong> dr\u017eite konstantnu brzinu 15\u201330 minuta u svakoj fazi.<\/li>\n<li><strong>Provjera vibracije:<\/strong> potvrditi da vibracija pada na svakoj etapi prije nego \u0161to se nastavi.<\/li>\n<li><strong>Nadzor temperature:<\/strong> osigurati da se toplinki gradijenti smanjuju.<\/li>\n<\/ol>\n<h3>10.2 Automatizirani sustavi pokretanja<\/h3>\n<p>Moderni upravlja\u010dki sustavi mogu automatizirati upravljanje termalnim lukom:<\/p>\n<ul>\n<li>Programabilne sekvence zagrijavanja.<\/li>\n<li>Automatska razdoblja zadr\u017eavanja ako se prekora\u010de ograni\u010denja vibracija ili temperature<\/li>\n<li>Izra\u010dun veli\u010dine deformacije u stvarnom vremenu iz vibracije i temperature.<\/li>\n<li>Prilagodljivi profili brzine temeljeni na izmjerenim uvjetima<\/li>\n<\/ul>\n<h2>11. Odnos prema ostalim fenomenima<\/h2>\n<h3>11.1 Toplinska deformacija naspram permanentne deformacije<\/h3>\n<ul>\n<li><strong>Termalni luk:<\/strong> privremena, nestaje na toplinskoj ravnote\u017ei.<\/li>\n<li><strong>Trajno savijanje:<\/strong> plasti\u010dna deformacija koja ostaje \u010dak i kada je vratilo hladna.<\/li>\n<li><strong>Rizik:<\/strong> te\u0161ka, ponovljena toplinska deformacija mo\u017ee na kraju uzrokovati permanentnu deformaciju.<\/li>\n<\/ul>\n<h3>11.2 Toplinska deformacija i balansiranje<\/h3>\n<ul>\n<li>Poku\u0161aj <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/balancing\/\">uravnote\u017eenost<\/a> rotor tijekom toplinske deformacije je beskorisno.<\/li>\n<li>Te\u017ei za korekciju izra\u010dunati za stanje deformacije bit \u0107e pogre\u0161ni nakon \u0161to se postigne ravnote\u017ea.<\/li>\n<li>Uvijek dozvolite toplinsku stabilizaciju prije balansiranja.<\/li>\n<li>Toplinska deformacija mo\u017ee skrivati i pravu temeljnu neuravnote\u017eenost.<\/li>\n<\/ul>\n<p>To je upravo razlog za\u0161to balansiranje na mjestu mora \u010dekati na stabilno toplinsko stanje. Kada se rotor dovoljno zagrijao pri radnoj brzini i spori prolaz potvrdi da se vrti pravilno, prijenosni dvokanalski analizator kao \u0161to je <a href=\"https:\/\/vibromera.eu\/hr\/proizvod\/balanset-1\/\">Balanset-1A<\/a> mo\u017ee izmjeriti amplitudu 1\u00d7 i <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase\/\">faza<\/a>, izra\u010dunajte <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/influence-coefficient\/\">koeficijenti utjecaja<\/a>i provjeriti kona\u010dnu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/residual-unbalance\/\">preostala neravnote\u017ea<\/a> protiv jednog <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/iso-21940-11\/\">ISO 21940-11<\/a> klasu \u2014 bilje\u017ee\u0107i pravo toplo stanje balansa koje hladna ma\u0161ina za balansiranje nikada ne vidi. Dozvoljeni rezidualni disbalans za zadatak mo\u017ee se unaprijed odrediti s <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/residual-unbalance-iso1940\/\">Kalkulator preostalog neuravnote\u017eenja (ISO 21940-11)<\/a>.<\/p>\n<h2>12. Preventivne najbolje prakse<\/h2>\n<h3>12.1 Za nove instalacije<\/h3>\n<ul>\n<li>Konstruirajte simetri\u010dne sustave grijanja i hla\u0111enja.<\/li>\n<li>Instalirajte rotiraju\u0107i ure\u0111aj za opreme iznad 100 kW ili s vratilom du\u017eim od 2 metra.<\/li>\n<li>Osigurajte odgovaraju\u0107u drena\u017eu kako biste sprije\u010dili nakupljanje vru\u0107e teku\u0107ine<\/li>\n<li>Izolacijskom materijalom minimalizirajte prijenos radijacijske topline.<\/li>\n<\/ul>\n<h3>12.2 Za postoje\u0107u opremu<\/h3>\n<ul>\n<li>Razviti i strogo slijediti pisane postupke zagrijavanja<\/li>\n<li>Obu\u010dite operatore o rizicima i simptomima toplinskog savijanja.<\/li>\n<li>Instalirajte pra\u0107enje temperature na vi\u0161e mjesta.<\/li>\n<li>Koristite pra\u0107enje vibracija tijekom pokretanja kako biste otkrili toplinske probleme.<\/li>\n<li>Dokumentirajte povijesne podatke kako biste u vremenu usavr\u0161ili postupke.<\/li>\n<\/ul>\n<h3>12.3 Aktivnosti odr\u017eavanja<\/h3>\n<ul>\n<li>Prije svakog isklju\u010divanja provjerite rad okretnog mehanizma<\/li>\n<li>Provjerite kalibraciju senzora temperature le\u017eaja.<\/li>\n<li>Ispitajte drena\u017ene sustave na za\u010depljenja.<\/li>\n<li>Provjerite integritet izolacije.<\/li>\n<li>Prona\u0111ite i eliminirajte svaki izvor asimetri\u010dnog zagrijavanja.<\/li>\n<\/ul>\n<p>Toplinsko savijanje, iako privremeno i reverzibilno, predstavlja zna\u010dajan operativni izazov za velike rotiraju\u0107e strojeve. Razumijevanje njegovih uzroka, prepoznavanje njegovih simptoma i slije\u0111enje odgovaraju\u0107ih postupaka zagrijavanja i hla\u0111enja su klju\u010dni za pouzdano funkcioniranje parnih turbina, plinskih turbina i druge visokotermalne rotiraju\u0107e opreme \u2014 i za razlikovanje, u tom trenutku, izme\u0111u rotora koji jednostavno trebate vrijeme da se smiri i onog koji doista trebate da bude balanciran.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/\">\u2190 Natrag na glavni indeks<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saznajte vi\u0161e o termalnom luku, privremenom zakrivljenju osovine uzrokovanom neravnomjernim zagrijavanjem koje stvara simptome vibracija tijekom zagrijavanja, \u0161to je uobi\u010dajeno kod velikih turbina i motora.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-268","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/268\/revisions"}],"predecessor-version":[{"id":101463,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/268\/revisions\/101463"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/media?parent=268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/categories?post=268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/tags?post=268"}],"curies":[{"name":"radni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}