{"id":2399,"date":"2026-06-26T05:07:52","date_gmt":"2026-06-26T05:07:52","guid":{"rendered":"https:\/\/helicalcutgears.top\/?p=2399"},"modified":"2026-06-26T05:07:52","modified_gmt":"2026-06-26T05:07:52","slug":"helical-gear-surface-failure-pitting-micropitting-scuffing","status":"publish","type":"post","link":"https:\/\/helicalcutgears.top\/cs\/helical-gear-surface-failure-pitting-micropitting-scuffing\/","title":{"rendered":"Povrchov\u00e9 selh\u00e1n\u00ed ozuben\u00fdch kol s spir\u00e1lov\u00fdm ozuben\u00edm \u2013 rozpozn\u00e1n\u00ed a prevence d\u016flkov\u00e9 koroze, mikrod\u016flkov\u00e9 koroze a od\u011bru"},"content":{"rendered":"<div style=\"font-family: Arial,sans-serif; color: #2c3e50; max-width: 1100px; margin: 0 auto; padding: 0 2%; line-height: 1.75; word-break: break-word; overflow-wrap: break-word;\">\n<div style=\"position: relative; min-height: 330px; display: flex; align-items: center; background: url('https:\/\/helicalcutgears.top\/wp-content\/uploads\/2026\/04\/Carburized-Helical-Gear.webp') center\/cover no-repeat; border-radius: 8px; overflow: hidden; margin-bottom: 44px;\">\n<div style=\"position: absolute; inset: 0; background: linear-gradient(108deg,rgba(10,22,45,.91) 0%,rgba(10,22,45,.73) 55%,rgba(10,22,45,.25) 100%);\"><\/div>\n<div style=\"position: relative; z-index: 1; padding: clamp(28px,5%,54px); max-width: 640px;\">\n<h1 style=\"font-size: clamp(22px,3.8vw,40px); font-weight: 800; color: #fff; line-height: 1.18; margin: 0 0 14px;\">Povrchov\u00e9 selh\u00e1n\u00ed ozuben\u00fdch kol s spir\u00e1lov\u00fdm ozuben\u00edm \u2013 rozpozn\u00e1n\u00ed a prevence d\u016flkov\u00e9 koroze, mikrod\u016flkov\u00e9 koroze a od\u011bru<\/h1>\n<p style=\"font-size: clamp(14px,2vw,17px); color: rgba(255,255,255,.83); line-height: 1.85; margin-bottom: 14px; margin: 0 0 22px;\">T\u0159i odli\u0161n\u00e9 mechanismy selh\u00e1n\u00ed povrchu ovliv\u0148uj\u00ed boky zubu <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> \u2014 d\u016flkov\u00e1 koroze, mikrod\u016flkov\u00e1 koroze a od\u011br \u2013 a ka\u017ed\u00e9 z nich vy\u017eaduje jinou strategii prevence. Jejich z\u00e1m\u011bna vede k nespr\u00e1vn\u00e9mu z\u00e1sahu: aplikaci oleje s vysok\u00fdm EP aditivem na <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> s makrokoroz\u00ed v d\u016fsledku \u00fanavy povrchu (kde p\u0159\u00edsady EP nep\u0159in\u00e1\u0161ej\u00ed \u017e\u00e1dn\u00fd p\u0159\u00ednos), ani\u017e by se prohl\u00e9dlo skute\u010dn\u00e9 \u0159e\u0161en\u00ed (p\u0159echod na tvrd\u0161\u00ed materi\u00e1l), nebo s aplikac\u00ed odleh\u010den\u00ed hrotu ozuben\u00e9ho kola s od\u00edr\u00e1n\u00edm (co\u017e ne\u0159e\u0161\u00ed nadm\u011brnou teplotu blesku, kter\u00e1 zp\u016fsobila od\u00edr\u00e1n\u00ed). Tato p\u0159\u00edru\u010dka rozli\u0161uje v\u0161echny t\u0159i podle mechanismu, vizu\u00e1ln\u00edho vzhledu, inicia\u010dn\u00ed podm\u00ednky a spr\u00e1vn\u00e9 metody prevence.<\/p>\n<p><a style=\"display: inline-block; background: #e67e22; color: #fff; font-weight: bold; font-size: clamp(13px,1.8vw,15px); padding: 12px 26px; border-radius: 6px; text-decoration: none;\" href=\"#contact\">Odeslat vzorek selh\u00e1n\u00ed k anal\u00fdze \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<h2 style=\"font-size: clamp(18px,3vw,24px); color: #1a5276; border-bottom: 3px solid #e67e22; padding-bottom: 8px; margin: 40px 0 16px; font-weight: bold;\">T\u0159i mechanismy povrchov\u00e9ho selh\u00e1n\u00ed \u2013 p\u0159ehled<\/h2>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: 14px; margin: 18px 0;\">\n<div style=\"border-radius: 8px; padding: 16px; background: #eaf6fb; border: 2px solid #1a5276;\">\n<p style=\"font-size: clamp(14px,1.9vw,16px); color: #1a5276; font-weight: 800; margin: 0 0 8px;\">Makropitting (\u00fanava valiv\u00e9ho kontaktu)<\/p>\n<p style=\"font-size: clamp(13px,1.7vw,14px); color: #2c3e50; line-height: 1.70; margin: 0;\"><strong>Mechanismus:<\/strong> Cyklick\u00e9 Hertzovo kontaktn\u00ed nap\u011bt\u00ed p\u0159ekra\u010duje mez \u00fanosnosti materi\u00e1lu. \u00danavov\u00e1 trhlina vznik\u00e1 na povrchu nebo v jeho bl\u00edzkosti a \u0161\u00ed\u0159\u00ed se, dokud se fragment nevylou\u010d\u00ed. <strong>\u010casov\u00fd harmonogram:<\/strong> vyv\u00edj\u00ed se b\u011bhem 10\u2076\u201310\u2079 zat\u011b\u017eovac\u00edch cykl\u016f \u2013 varuje p\u0159ed katastrofick\u00fdm selh\u00e1n\u00edm. <strong>Rozhoduj\u00edc\u00ed podm\u00ednka:<\/strong> \u03c3_H &gt; \u03c3_H lim (mez \u00fanosnosti materi\u00e1lu).<\/p>\n<\/div>\n<div style=\"border-radius: 8px; padding: 16px; background: #f0fff4; border: 2px solid #1a7847;\">\n<p style=\"font-size: clamp(14px,1.9vw,16px); color: #1a7847; font-weight: 800; margin: 0 0 8px;\">Mikrokorozn\u00ed tk\u00e1\u0148 (\u0161ed\u00e9 barven\u00ed)<\/p>\n<p style=\"font-size: clamp(13px,1.7vw,14px); color: #2c3e50; line-height: 1.70; margin: 0;\"><strong>Mechanismus:<\/strong> Velmi m\u011blk\u00e9 \u00fanavov\u00e9 trhliny (hloubkov\u00e9 10\u2013100 \u00b5m) v kontaktn\u00edch z\u00f3n\u00e1ch nerovnost\u00ed na povrchu boku zubu. Vytv\u00e1\u0159ej\u00ed \u0161ed\u00fd, matn\u00fd vzhled viditeln\u00fd pouh\u00fdm okem. <strong>\u010casov\u00fd harmonogram:<\/strong> vyv\u00edj\u00ed se v pr\u016fb\u011bhu 10\u2077\u201310\u00b9\u2070 cykl\u016f \u2013 pomaleji ne\u017e iniciace makropittingu, ale m\u016f\u017ee do n\u011bj v\u00e9st. <strong>Rozhoduj\u00edc\u00ed podm\u00ednka:<\/strong> specifick\u00fd pom\u011br filmu \u03bb &lt; 2,0.<\/p>\n<\/div>\n<div style=\"border-radius: 8px; padding: 16px; background: #fef0f0; border: 2px solid #c0392b;\">\n<p style=\"font-size: clamp(14px,1.9vw,16px); color: #c0392b; font-weight: 800; margin: 0 0 8px;\">Od\u011br (opot\u0159eben\u00ed lepidlem)<\/p>\n<p style=\"font-size: clamp(13px,1.7vw,14px); color: #2c3e50; line-height: 1.70; margin: 0;\"><strong>Mechanismus:<\/strong> Okam\u017eit\u00e9 adhezn\u00ed opot\u0159eben\u00ed, kdy\u017e teploty drsnosti kr\u00e1tce p\u0159ekro\u010d\u00ed teplotu kolapsu mazac\u00edho filmu. Kontakt kovu na kov p\u0159en\u00e1\u0161\u00ed materi\u00e1l z jednoho boku zubu na druh\u00fd. <strong>\u010casov\u00fd harmonogram:<\/strong> m\u016f\u017ee doj\u00edt b\u011bhem PRVN\u00cdHO kontaktn\u00edho cyklu za extr\u00e9mn\u00edch podm\u00ednek. <strong>Rozhoduj\u00edc\u00ed podm\u00ednka:<\/strong> teplota z\u00e1blesku T_flash &gt; teplota od\u011bru T_scuff.<\/p>\n<\/div>\n<\/div>\n<h2 style=\"font-size: clamp(18px,3vw,24px); color: #1a5276; border-bottom: 3px solid #e67e22; padding-bottom: 8px; margin: 40px 0 16px; font-weight: bold;\">D\u016flkov\u00e1 r\u00fdha \u2013 mechanismus, vizu\u00e1ln\u00ed diagnostika a prevence<\/h2>\n<h3 style=\"font-size: clamp(15px,2.5vw,19px); color: #2c3e50; border-left: 4px solid #1a5276; padding-left: 10px; margin: 24px 0 10px; font-weight: bold;\">Jak vznik\u00e1 makropitting u \u0161ikm\u00fdch ozuben\u00fdch kol<\/h3>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Kontaktn\u00ed \u00fanavov\u00e9 d\u016flky v <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> za\u010d\u00edn\u00e1 v m\u00edst\u011b maxim\u00e1ln\u00edho Hertzova smykov\u00e9ho nap\u011bt\u00ed \u2013 bu\u010f na povrchu boku zubu (povrchov\u011b iniciovan\u00e9 d\u016flky, \u010dast\u011bj\u0161\u00ed v podm\u00ednk\u00e1ch mezn\u00edho maz\u00e1n\u00ed), nebo t\u011bsn\u011b pod povrchem v hloubce maxim\u00e1ln\u00edho ortogon\u00e1ln\u00edho smykov\u00e9ho nap\u011bt\u00ed (podpovrchov\u011b iniciovan\u00e9 d\u016flky, \u010dast\u011bj\u0161\u00ed u dob\u0159e mazan\u00fdch ozuben\u00fdch kol s vysok\u00fdm kontaktn\u00edm nap\u011bt\u00edm). Vrchol Hertzova smykov\u00e9ho nap\u011bt\u00ed v hloubce z\u2080 = 0,786 \u00d7 b_H (kde b_H je Hertzova polovi\u010dn\u00ed \u0161\u00ed\u0159ka kontaktu) je p\u0159ibli\u017en\u011b 0,30 \u00d7 \u03c3_H_max \u2013 a v t\u00e9to hloubce dosahuje cyklick\u00e9 zvrat nap\u011bt\u00ed \u00b10,30 \u00d7 \u03c3_H_max s ka\u017ed\u00fdm kontaktem zubu, \u010d\u00edm\u017e se hromad\u00ed \u00fanavov\u00e9 po\u0161kozen\u00ed, dokud se trhlina neiniciuje a ne\u0161\u00ed\u0159\u00ed k povrchu.<\/p>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Hloubka iniciace podpovrchov\u00e9 d\u016flkov\u00e9 koroze z\u2080 je d\u016fle\u017eit\u00e1 pro specifikaci hloubky pouzdra: pokud je ECD hloubky pouzdra m\u011bl\u010d\u00ed ne\u017e z\u2080, vrchol Hertzova nap\u011bt\u00ed klesne pod pouzdro v relativn\u011b m\u011bkk\u00e9m j\u00e1drov\u00e9m materi\u00e1lu \u2013 co\u017e iniciuje hlubok\u00e9 poru\u0161en\u00ed drcen\u00edm pouzdra sp\u00ed\u0161e ne\u017e povrchovou d\u016flkovou korozi. Po\u017eadavek spole\u010dnosti Korea Ever-Power na hloubku pouzdra pro <strong>\u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> (ECD \u2265 0,15\u20130,20 \u00d7 Mn) zaji\u0161\u0165uje, \u017ee pouzdro p\u0159esahuje maxim\u00e1ln\u00ed hloubku Hertzova nap\u011bt\u00ed pro standardn\u00ed kontaktn\u00ed nap\u011bt\u00ed zubu (viz \u010dl\u00e1nek 53 a \u010dl\u00e1nek 52 pro hloubku pouzdra a podrobnosti podle normy ISO 6336).<\/p>\n<h3 style=\"font-size: clamp(15px,2.5vw,19px); color: #2c3e50; border-left: 4px solid #1a5276; padding-left: 10px; margin: 24px 0 10px; font-weight: bold;\">Vizu\u00e1ln\u00ed vzhled d\u016flkov\u00e9 koroze<\/h3>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Makropituj\u00edc\u00ed kr\u00e1tery na <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> boky zubu vypadaj\u00ed jako:<\/p>\n<ul style=\"padding-left: 20px; margin: 0 0 16px; font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.9;\">\n<li style=\"margin-bottom: 7px;\"><strong>Um\u00edst\u011bn\u00ed:<\/strong> Koncentruje se v bl\u00edzkosti rozte\u010dn\u00e9 \u010d\u00e1ry, kde je kluzn\u00e1 rychlost nulov\u00e1 a vrstva EHL je nejten\u010d\u00ed pro dan\u00e9 kontaktn\u00ed nap\u011bt\u00ed. Na pastorku (kter\u00fd zaznamen\u00e1v\u00e1 v\u00edce \u00fanavov\u00fdch cykl\u016f za jednotku \u010dasu) se d\u016flkov\u00e1 koroze obvykle objevuje jako prvn\u00ed.<\/li>\n<li style=\"margin-bottom: 7px;\"><strong>Tvar:<\/strong> Zhruba p\u016flkruhov\u00e9 nebo v\u011bj\u00ed\u0159ovit\u00e9 kr\u00e1tery o pr\u016fm\u011bru 0,5\u20135 mm s hladk\u00fdm, le\u0161t\u011bn\u00fdm vnit\u0159n\u00edm povrchem (odlomen\u00fd fragment zanechal \u010dist\u00fd lomov\u00fd povrch).<\/li>\n<li style=\"margin-bottom: 0;\"><strong>Postup:<\/strong> Po\u010d\u00e1te\u010dn\u00ed d\u016flky jsou izolovan\u00e9 a mal\u00e9. S postupuj\u00edc\u00ed \u00fanavou materi\u00e1lu se d\u016flky shlukuj\u00ed do v\u011bt\u0161\u00edch kr\u00e1ter\u016f (odlupov\u00e1n\u00ed) a nakonec souvisle pokr\u00fdvaj\u00ed rozte\u010dnou linii \u2013 v tomto bod\u011b je ozuben\u00e9 kolo zjevn\u011b v pokro\u010dil\u00e9m st\u00e1diu selh\u00e1n\u00ed a generuje charakteristick\u00fd r\u00e1zov\u00fd hluk p\u0159i rota\u010dn\u00ed frekvenci.<\/li>\n<\/ul>\n<h3 style=\"font-size: clamp(15px,2.5vw,19px); color: #2c3e50; border-left: 4px solid #1a5276; padding-left: 10px; margin: 24px 0 10px; font-weight: bold;\">Pom\u011br filmu EHL \u03bb a prevence d\u016flkov\u00e1n\u00ed<\/h3>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Pom\u011br specifick\u00e9 tlou\u0161\u0165ky filmu \u03bb ur\u010duje iniciaci d\u016flkov\u00e9 koroze v <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong>:<\/p>\n<p style=\"padding: 10px 16px; background: #f0f8ff; border-left: 4px solid #2980b9; border-radius: 0 6px 6px 0; font-family: 'Courier New',monospace; font-size: clamp(13px,1.8vw,15px); margin: 12px 0;\">\u03bb \u2265 2,0: Pln\u00e1 EHL vrstva \u2013 nerovnosti se nedot\u00fdkaj\u00ed; pouze podpovrchov\u00e1 d\u016flkov\u00e1 tvorba v d\u016fsledku objemov\u00e9ho Hertzova nap\u011bt\u00ed<br \/>\n\u03bb = 1,0\u20132,0: Sm\u00ed\u0161en\u00e9 maz\u00e1n\u00ed \u2013 ob\u010dasn\u00fd kontakt s drsnost\u00ed; mo\u017en\u00e9 d\u016flkov\u00e9 koroze na povrchu i pod povrchem<br \/>\n\u03bb &lt; 1,0: Mezn\u00ed maz\u00e1n\u00ed \u2013 \u010dast\u00fd kontakt s drsnost\u00ed; urychlen\u00e1 d\u016flkov\u00e1 tvorba iniciovan\u00e1 povrchem<\/p>\n<p>h_min \u2248 2,65 \u00d7 \u03b7\u2080^0,7 \u00d7 v^0,68 \u00d7 R^0,46 \/ (E'^0,53 \u00d7 w^0,13) [zjednodu\u0161en\u00fd Hamrock-Dowson\u016fv model]<br \/>\nkde: \u03b7\u2080 = dynamick\u00e1 viskozita oleje na vstupu [Pa\u00b7s]<br \/>\nv = rychlost na ose stoup\u00e1n\u00ed [m\/s]<br \/>\nR = ekvivalentn\u00ed polom\u011br zak\u0159iven\u00ed [mm]<br \/>\nw = norm\u00e1ln\u00ed kontaktn\u00ed zat\u00ed\u017een\u00ed na jednotku \u0161\u00ed\u0159ky [N\/mm]<\/p>\n<p>Pro zlep\u0161en\u00ed \u03bb: \u2191 stupe\u0148 viskozity oleje | \u2191 rychlost na ose stoup\u00e1n\u00ed (v\u011bt\u0161\u00ed ozuben\u00e9 kolo) | \u2191 kontaktn\u00ed polom\u011br (v\u011bt\u0161\u00ed modul)<br \/>\n| \u2193 drsnost povrchu Ra (brou\u0161en\u00ed + ISF) | pou\u017eijte syntetick\u00fd PAO s ni\u017e\u0161\u00edm koeficientem trakce<\/p>\n<h2 style=\"font-size: clamp(18px,3vw,24px); color: #1a5276; border-bottom: 3px solid #e67e22; padding-bottom: 8px; margin: 40px 0 16px; font-weight: bold;\">Mikrokorozn\u00ed koroze \u2013 vysokocyklov\u00fd re\u017eim povrchov\u00e9ho selh\u00e1n\u00ed<\/h2>\n<p><img decoding=\"async\" style=\"max-width: 560px; height: auto; display: block; margin: 22px auto; border-radius: 6px; box-shadow: 0 3px 12px rgba(0,0,0,.10);\" src=\"https:\/\/helicalcutgears.top\/wp-content\/uploads\/2026\/04\/helical-gear-workshop-3.webp\" alt=\"bok zubu spir\u00e1lov\u00e9ho ozuben\u00e9ho kola vykazuj\u00edc\u00ed \u0161ed\u00e9 zbarven\u00ed v podob\u011b mikro-pittingu zp\u016fsoben\u00e9ho specifick\u00fdm pom\u011brem filmu EHL pod 2,0, kter\u00e9 je odli\u0161iteln\u00e9 od makro-pittingu \u0161ed\u00fdm matn\u00fdm vzhledem a velmi jemn\u00fdm \u0161upinkem ve srovn\u00e1n\u00ed s makro-pittingy hladk\u00e9ho kr\u00e1teru\" \/><\/p>\n<p style=\"font-size: 12.5px; color: #7f8c8d; text-align: center; margin: -14px 0 24px; font-style: italic;\">Mikrod\u016flkov\u00e1 d\u016flka na <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> bok zubu \u2013 \u0161ed\u00fd, matn\u00fd vzhled (\u201e\u0161ed\u00e9 zbarven\u00ed\u201c) je d\u016fsledkem tis\u00edc\u016f velmi m\u011blk\u00fdch d\u016flk\u016f (10\u2013100 \u00b5m), kter\u00e9 se vytvo\u0159\u00ed, kdy\u017e pom\u011br filmu EHL \u03bb klesne pod 2,0 v kontaktn\u00edch z\u00f3n\u00e1ch s drsnost\u00ed. Z\u00f3na po\u0161kozen\u00ed se rozprost\u00edr\u00e1 na v\u011bt\u0161\u00ed plo\u0161e ne\u017e makro-d\u016flky a m\u016f\u017ee se rozvinout do makro-d\u016flk\u016f, pokud se ne\u0159e\u0161\u00ed. Od od\u011bru se odli\u0161uje absenc\u00ed sm\u011brov\u00fdch r\u00fdh.<\/p>\n<h3 style=\"font-size: clamp(15px,2.5vw,19px); color: #2c3e50; border-left: 4px solid #1a5276; padding-left: 10px; margin: 24px 0 10px; font-weight: bold;\">Mechanismus mikropittingu a kritick\u00fd rozd\u00edl od makropittingu<\/h3>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Mikrod\u016flkov\u00e1 d\u016flka v <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> vznik\u00e1, kdy\u017e se povrchov\u00e9 nerovnosti dot\u00fdkaj\u00ed p\u0159es nedostate\u010dn\u00fd film EHL (\u03bb &lt; 2,0) a ka\u017ed\u00fd kontakt vytv\u00e1\u0159\u00ed velmi malou \u00fanavovou trhlinu v kontaktn\u00ed z\u00f3n\u011b nerovnost\u00ed \u2013 v hloubk\u00e1ch 10\u2013100 \u00b5m, co\u017e je mnohem m\u011bl\u010d\u00ed ne\u017e makropitting (kter\u00fd m\u016f\u017ee vzniknout 100\u2013500 \u00b5m pod povrchem). Jednotliv\u00e9 trhliny jsou p\u0159\u00edli\u0161 mal\u00e9 na to, aby byly viditeln\u00e9 jednotliv\u011b, ale kolektivn\u00ed po\u0161kozen\u00ed z milion\u016f kontakt\u016f nerovnost\u00ed vytv\u00e1\u0159\u00ed \u0161ed\u00fd matn\u00fd vzhled viditeln\u00fd pouh\u00fdm okem v kluzn\u00fdch z\u00f3n\u00e1ch materi\u00e1lu. <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> zub (oblasti nad a pod \u010d\u00e1rou stoup\u00e1n\u00ed, kde je kluzn\u00e1 rychlost nejvy\u0161\u0161\u00ed \u2013 opak makropittingu, kter\u00fd se koncentruje v bl\u00edzkosti \u010d\u00e1ry stoup\u00e1n\u00ed, kde je kluzn\u00e1 rychlost nejni\u017e\u0161\u00ed).<\/p>\n<div style=\"background: #eaf6fb; border-left: 4px solid #2980b9; padding: 13px 16px; border-radius: 0 6px 6px 0; margin: 16px 0; font-size: clamp(13px,1.8vw,15px); color: #2c3e50; line-height: 1.75;\"><strong>Rozd\u00edl v lokalizaci \u2013 mikro-pitting vs. makro-pitting:<\/strong> Makropitting se koncentruje BL\u00cdZKO rozte\u010dn\u00e9 \u010d\u00e1ry (kde je vrstva EHL pro danou geometrii zubu nejten\u010d\u00ed, proto\u017ee kluzn\u00e1 rychlost \u2192 0 sni\u017euje hydrodynamick\u00fd kl\u00edn). Mikropitting se koncentruje P\u0158ESN\u011a od rozte\u010dn\u00e9 \u010d\u00e1ry \u2013 v z\u00f3n\u00e1ch adenda a dedenda, kde je kluzn\u00e1 rychlost vy\u0161\u0161\u00ed (v\u00edce kontakt\u016f s drsnost\u00ed na jednotku plochy). Tento rozd\u00edl v um\u00edst\u011bn\u00ed je nejspolehliv\u011bj\u0161\u00ed vizu\u00e1ln\u00ed diagnostikou mezi t\u011bmito dv\u011bma re\u017eimy selh\u00e1n\u00ed bez zv\u011bt\u0161en\u00ed.<\/div>\n<h3 style=\"font-size: clamp(15px,2.5vw,19px); color: #2c3e50; border-left: 4px solid #1a5276; padding-left: 10px; margin: 24px 0 10px; font-weight: bold;\">Prevence mikropittingu v \u0161ikm\u00fdch ozuben\u00fdch kolech<\/h3>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">\u010cty\u0159i intervence sni\u017euj\u00ed riziko mikrod\u016flk\u016f v <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> pohony, se\u0159azen\u00e9 podle \u00fa\u010dinnosti:<\/p>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 12px; margin: 18px 0;\">\n<div style=\"border-left: 4px solid #1a5276; background: #f8f9fa; padding: 15px 16px; border-radius: 0 6px 6px 0;\">\n<p><strong style=\"display: block; color: #1a5276; font-size: clamp(12.5px,1.7vw,14px); margin-bottom: 5px;\">1. Povrchov\u00e1 \u00faprava ISF<\/strong><\/p>\n<p style=\"font-size: clamp(12px,1.6vw,13px); color: #2c3e50; line-height: 1.65; margin: 0;\">ISF sni\u017euje <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> Ra z 0,3 \u00b5m na 0,05 \u00b5m, zdvojn\u00e1soben\u00ed \u03bb. U ozuben\u00fdch kol elektromobil\u016f a v\u011btrn\u00fdch turb\u00edn, kde je mikrokorozn\u00ed koroze prim\u00e1rn\u00edm omezova\u010dem \u017eivotnosti, je ISF nejn\u00e1kladov\u011b nejefektivn\u011bj\u0161\u00edm z\u00e1sahem.<\/p>\n<\/div>\n<div style=\"border-left: 4px solid #1a5276; background: #f8f9fa; padding: 15px 16px; border-radius: 0 6px 6px 0;\">\n<p><strong style=\"display: block; color: #1a5276; font-size: clamp(12.5px,1.7vw,14px); margin-bottom: 5px;\">2. Olej odoln\u00fd proti mikropittingu<\/strong><\/p>\n<p style=\"font-size: clamp(12px,1.6vw,13px); color: #2c3e50; line-height: 1.65; margin: 0;\">Zku\u0161ebn\u00ed hodnocen\u00ed FVA 54\/7 MLS \u2265 10 (polysulfidov\u00fd EP bal\u00ed\u010dek v PAO b\u00e1zi) zabra\u0148uje mikropittingu p\u0159i \u03bb pod 2,0 vytvo\u0159en\u00edm ochrann\u00e9ho tribochemick\u00e9ho filmu. Standardn\u00ed miner\u00e1ln\u00ed olej GL-4 dosahuje pouze MLS 6\u20138 \u2013 nedostate\u010dn\u00e9 pro vysokocyklov\u00e9 pohony nad 10\u2078 cykl\u016f.<\/p>\n<\/div>\n<div style=\"border-left: 4px solid #1a5276; background: #f8f9fa; padding: 15px 16px; border-radius: 0 6px 6px 0;\">\n<p><strong style=\"display: block; color: #1a5276; font-size: clamp(12.5px,1.7vw,14px); margin-bottom: 5px;\">3. Vy\u0161\u0161\u00ed t\u0159\u00edda p\u0159esnosti<\/strong><\/p>\n<p style=\"font-size: clamp(12px,1.6vw,13px); color: #2c3e50; line-height: 1.65; margin: 0;\">Uzemn\u011bn\u00ed dle DIN t\u0159\u00eddy 4\u20135 <strong>\u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> maj\u00ed ni\u017e\u0161\u00ed vlnitost profilu a jemn\u011bj\u0161\u00ed texturu povrchu ne\u017e t\u0159\u00edda DIN 7\u20138, co\u017e poskytuje vy\u0161\u0161\u00ed \u03bb na stupnici drsnosti i p\u0159i stejn\u00e9m m\u011b\u0159en\u00ed Ra. Odleh\u010den\u00ed hrotu d\u00e1le sni\u017euje kontaktn\u00ed tlak na vstupu do zubu, kde \u03bb b\u011bhem p\u0159echodu tuhosti p\u0159echodn\u011b kles\u00e1.<\/p>\n<\/div>\n<div style=\"border-left: 4px solid #1a5276; background: #f8f9fa; padding: 15px 16px; border-radius: 0 6px 6px 0;\">\n<p><strong style=\"display: block; color: #1a5276; font-size: clamp(12.5px,1.7vw,14px); margin-bottom: 5px;\">4. Zv\u011bt\u0161en\u00fd \u00fahel stoup\u00e1n\u00ed \u0161roubovice<\/strong><\/p>\n<p style=\"font-size: clamp(12px,1.6vw,13px); color: #2c3e50; line-height: 1.65; margin: 0;\">Vy\u0161\u0161\u00ed \u03b2 zvy\u0161uje \u03b5\u03b2 na <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> \u2014 v\u00edce p\u00e1r\u016f zub\u016f sd\u00edl\u00ed zat\u00ed\u017een\u00ed, \u010d\u00edm\u017e se sni\u017euje kontaktn\u00ed nap\u011bt\u00ed \u03c3_H a zvy\u0161uje se \u03bb pro sn\u00ed\u017een\u00ed rizika mikropittingu p\u0159i vysok\u00e9m po\u010dtu cykl\u016f.<\/p>\n<\/div>\n<\/div>\n<h2 style=\"font-size: clamp(18px,3vw,24px); color: #1a5276; border-bottom: 3px solid #e67e22; padding-bottom: 8px; margin: 40px 0 16px; font-weight: bold;\">Od\u011brky \u2013 Okam\u017eit\u00e9 selh\u00e1n\u00ed lepidla<\/h2>\n<h3 style=\"font-size: clamp(15px,2.5vw,19px); color: #2c3e50; border-left: 4px solid #1a5276; padding-left: 10px; margin: 24px 0 10px; font-weight: bold;\">Teplotn\u00ed model Blok Flash<\/h3>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Od\u011brky v <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> nast\u00e1v\u00e1, kdy\u017e kontaktn\u00ed teplota drsnosti \u2013 \u201eteplota vzplanut\u00ed\u201c \u2013 kr\u00e1tkodob\u011b p\u0159ekro\u010d\u00ed teplotu, p\u0159i kter\u00e9 doch\u00e1z\u00ed k rozpadu mazac\u00edho filmu a doch\u00e1z\u00ed k adhezivn\u00edmu kontaktu kov na kov. Blok\u016fv model teploty vzplanut\u00ed (z\u00e1klad pro posouzen\u00ed rizika od\u00edr\u00e1n\u00ed dle norem AGMA 925 a ISO TR 15144) vypo\u010d\u00edt\u00e1v\u00e1 n\u00e1r\u016fst teploty vzplanut\u00ed v m\u00edst\u011b kontaktu zubu:<\/p>\n<p style=\"padding: 10px 16px; background: #f0f8ff; border-left: 4px solid #2980b9; border-radius: 0 6px 6px 0; font-family: 'Courier New',monospace; font-size: clamp(13px,1.8vw,15px); margin: 12px 0;\">T_z\u00e1blesku = T_objem + \u0394T_z\u00e1blesku<br \/>\n\u0394T_z\u00e1blesk = f \u00d7 w_n \u00d7 |v_s| \/ (b_H \u00d7 \u221a(\u03c1\u2081 \u00d7 c\u2081 \u00d7 k\u2081 \u00d7 v_r1) + \u221a(\u03c1\u2082 \u00d7 c\u2082 \u00d7 k\u2082 \u00d7 v_r2))<br \/>\nkde: f = sou\u010dinitel t\u0159en\u00ed v kontaktu (\u2248 0,04\u20130,08 pro EHL; vy\u0161\u0161\u00ed u sm\u00ed\u0161en\u00e9 vrstvy)<br \/>\nw_n = norm\u00e1ln\u00ed kontaktn\u00ed zat\u00ed\u017een\u00ed na jednotku \u0161\u00ed\u0159ky [N\/mm]<br \/>\nv_s = kluzn\u00e1 rychlost v kontaktn\u00edm bod\u011b [m\/s] \u2013 nejvy\u0161\u0161\u00ed na \u0161pi\u010dce a ko\u0159eni zubu<br \/>\nb_H = Hertzova polovi\u010dn\u00ed \u0161\u00ed\u0159ka kontaktu [mm]<br \/>\n\u03c1, c, k = hustota, m\u011brn\u00e9 teplo, tepeln\u00e1 vodivost materi\u00e1lu ozuben\u00e9ho kola<br \/>\nv_r = slo\u017eka rychlosti odvalov\u00e1n\u00ed ka\u017ed\u00e9ho povrchu ozuben\u00e9ho kola<\/p>\n<p>Od\u011br za\u010d\u00edn\u00e1, kdy\u017e je T_flash &gt; T_scuff (teplota od\u011bru)<br \/>\nPro miner\u00e1ln\u00ed olej: T_od\u011bru \u2248 T_oleje_objem + 100\u2013150 \u00b0C<br \/>\nPro PAO s p\u0159\u00edsadou proti od\u011bru: T_od\u011bru \u2248 T_oleje_objem + 150\u2013200 \u00b0C<\/p>\n<h3 style=\"font-size: clamp(15px,2.5vw,19px); color: #2c3e50; border-left: 4px solid #1a5276; padding-left: 10px; margin: 24px 0 10px; font-weight: bold;\">Vizu\u00e1ln\u00ed vzhled od\u011brek \u2013 odli\u0161n\u00fd od bodov\u00e9 koroze<\/h3>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Po\u0161kozen\u00ed od\u011brkou na <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> se od d\u016flkov\u00e9 koroze odli\u0161uje sm\u011brov\u00fdm r\u00fdhov\u00e1n\u00edm:<\/p>\n<ul style=\"padding-left: 20px; margin: 0 0 16px; font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.9;\">\n<li style=\"margin-bottom: 7px;\"><strong>Um\u00edst\u011bn\u00ed:<\/strong> \u0160pi\u010dky zub\u016f (addendum \u2014 z\u00f3na prohlubn\u011b) a ko\u0159eny zub\u016f (dedendum \u2014 z\u00f3na p\u0159ibl\u00ed\u017een\u00ed), kde je kluzn\u00e1 rychlost maxim\u00e1ln\u00ed. Samotn\u00e1 rozte\u010dn\u00e1 \u010d\u00e1ra je obvykle nepo\u0161kozen\u00e1 nebo minim\u00e1ln\u011b ovlivn\u011bna. Toto je OPAK um\u00edst\u011bn\u00ed makropittingu.<\/li>\n<li style=\"margin-bottom: 7px;\"><strong>Sm\u011brovost:<\/strong> Hlubok\u00e9 \u0161kr\u00e1bance nebo vrypy prob\u00edhaj\u00edc\u00ed ve sm\u011bru kluzu zubu \u2013 radi\u00e1ln\u011b nap\u0159\u00ed\u010d zubem od ko\u0159ene ke \u0161pi\u010dce (u ozuben\u00e9ho kola) nebo od \u0161pi\u010dky ke ko\u0159eni (u pastorku) v ka\u017ed\u00e9m vrypu. Stopy nejsou n\u00e1hodn\u00e9 jako u opot\u0159eben\u00ed abrazivn\u00ed kontaminac\u00ed, ale jsou orientov\u00e1ny konzistentn\u011b se sm\u011brem kluzu.<\/li>\n<li style=\"margin-bottom: 0;\"><strong>P\u0159enos materi\u00e1lu:<\/strong> Mikroskopick\u00e9 vy\u0161et\u0159en\u00ed odhaluje materi\u00e1l p\u0159enesen\u00fd z jednoho boku zubu na dosedac\u00ed bok \u2013 co\u017e je ur\u010duj\u00edc\u00ed charakteristika adhezn\u00edho opot\u0159eben\u00ed. \u201eP\u0159ij\u00edmac\u00ed\u201c povrch (obvykle pomaleji se pohybuj\u00edc\u00ed ozuben\u00e9 kolo) ukazuje sva\u0159en\u00e9 hrudky p\u0159enesen\u00e9ho materi\u00e1lu pod\u00e9l r\u00fdhovan\u00fdch dr\u00e1\u017eek.<\/li>\n<\/ul>\n<h2 style=\"font-size: clamp(18px,3vw,24px); color: #1a5276; border-bottom: 3px solid #e67e22; padding-bottom: 8px; margin: 40px 0 16px; font-weight: bold;\">Rychl\u00e1 t\u0159\u00edcestn\u00e1 diagnostika \u2013 kter\u00fd re\u017eim selh\u00e1n\u00ed?<\/h2>\n<div style=\"overflow-x: auto; width: 100%; margin: 18px 0;\">\n<table style=\"width: 100%; border-collapse: collapse; min-width: 500px;\">\n<thead>\n<tr>\n<th style=\"background: #1a5276; color: #fff; padding: 10px 13px; text-align: left; border: 1px solid #154360; font-size: clamp(13px,1.5vw,15px);\">Diagnostick\u00e1 ot\u00e1zka<\/th>\n<th style=\"background: #1a5276; color: #fff; padding: 10px 13px; text-align: left; border: 1px solid #154360; font-size: clamp(13px,1.5vw,15px);\">Makropitting<\/th>\n<th style=\"background: #1a5276; color: #fff; padding: 10px 13px; text-align: left; border: 1px solid #154360; font-size: clamp(13px,1.5vw,15px);\">Mikrod\u016flkov\u00e1 tk\u00e1\u0148<\/th>\n<th style=\"background: #1a5276; color: #fff; padding: 10px 13px; text-align: left; border: 1px solid #154360; font-size: clamp(13px,1.5vw,15px);\">Od\u011brky<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px); ;font-weight: 700;\">Vzhled boku zubu<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Hladk\u00e9 kr\u00e1tery, 0,5\u20135 mm, leskl\u00fd vnit\u0159n\u00ed povrch<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">\u0160ed\u00fd matn\u00fd\/matn\u00fd povlak; jemn\u00e1 textura; nutn\u00e9 pe\u010dliv\u011b prohl\u00e9dnout<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Hlubok\u00e9 \u0161kr\u00e1bance\/r\u00fdhy; drsn\u00fd, roztr\u017een\u00fd povrch; sm\u011brov\u00e9 zna\u010dky<\/td>\n<\/tr>\n<tr>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px); ;font-weight: 700;\">Um\u00edst\u011bn\u00ed na zubu<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Bl\u00edzko osy sklonu (minim\u00e1ln\u011b kluzn\u00e1 z\u00f3na)<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Pry\u010d od osy h\u0159i\u0161t\u011b (addendum a dedendum, z\u00f3na s vysok\u00fdm posuvem)<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">\u0160pi\u010dky a ko\u0159eny zub\u016f (z\u00f3na maxim\u00e1ln\u00ed kluzn\u00e9 rychlosti)<\/td>\n<\/tr>\n<tr>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px); ;font-weight: 700;\">\u010cas na rozvoj<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">10\u2076\u201310\u2079 cykly \u2013 m\u011bs\u00edce a\u017e roky<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">10\u2077\u201310\u00b9\u2070 cykl\u016f \u2013 m\u016f\u017ee trvat roky; postupuje pomalu<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Minuty a\u017e hodiny \u2013 m\u016f\u017ee se objevit p\u0159i prvn\u00edm provozu<\/td>\n<\/tr>\n<tr>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px); ;font-weight: 700;\">Sign\u00e1l po\u010dtu olejov\u00fdch \u010d\u00e1stic<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Zvy\u0161uj\u00edc\u00ed se po\u010det velk\u00fdch \u010d\u00e1stic (50\u2013200 \u00b5m), vysok\u00fd pom\u011br L\/W<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Zvy\u0161uj\u00edc\u00ed se po\u010det jemn\u00fdch \u010d\u00e1stic (1\u201315 \u00b5m)<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">N\u00e1hl\u00fd prudk\u00fd n\u00e1r\u016fst velk\u00fdch kovov\u00fdch \u010d\u00e1stic; prudk\u00fd n\u00e1r\u016fst koncentrace \u017eeleza<\/td>\n<\/tr>\n<tr>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px); ;font-weight: 700;\">Prim\u00e1rn\u00ed p\u0159\u00ed\u010dina<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">\u03c3_H &gt; \u03c3_H lim (materi\u00e1l nebo zat\u00ed\u017een\u00ed)<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">\u03bb &lt; 2,0 (olej, rychlost, drsnost povrchu)<\/td>\n<td style=\"background: #f2f3f4; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">T_z\u00e1blesk &gt; T_od\u011br (olej, rychlost, kontaktn\u00ed tlak)<\/td>\n<\/tr>\n<tr>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px); ;font-weight: 700;\">Prim\u00e1rn\u00ed oprava<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Lep\u0161\u00ed materi\u00e1l (cementovan\u00fd), sn\u00ed\u017een\u00ed zat\u00ed\u017een\u00ed, zv\u00fd\u0161en\u00ed modulu<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">Lep\u0161\u00ed olej (MLS 10), povrchov\u00e1 \u00faprava ISF, odleh\u010den\u00ed hrotu<\/td>\n<td style=\"background: #fff; padding: 8px 12px; border: 1px solid #d5d8dc; font-size: clamp(13px,1.5vw,15px);\">P\u0159\u00edsady do oleje proti od\u011bru, sni\u017euj\u00ed rychlost zubov\u00e9 stopy, sni\u017euj\u00ed zat\u00ed\u017een\u00ed na zub<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 style=\"font-size: clamp(18px,3vw,24px); color: #1a5276; border-bottom: 3px solid #e67e22; padding-bottom: 8px; margin: 40px 0 16px; font-weight: bold;\">Korea Ever-Power \u2014 Anal\u00fdza povrchov\u00fdch poruch a doporu\u010den\u00ed materi\u00e1l\u016f<\/h2>\n<p><img decoding=\"async\" style=\"width: 100%; height: auto; display: block; margin: 22px 0; border-radius: 6px; box-shadow: 0 3px 12px rgba(0,0,0,.10);\" src=\"https:\/\/helicalcutgears.top\/wp-content\/uploads\/2026\/04\/Hard-Tooth-Flank-Helical-Gear.webp\" alt=\"Specifikace cementovan\u00e9ho \u0161pir\u00e1lov\u00e9ho ozuben\u00e9ho kola s tvrd\u00fdm bokem zubu pro odolnost proti d\u016flkov\u00e9mu a mikrod\u016flkov\u00e9mu korozi s povrchem HRC 58-62 s pevnost\u00ed v tahu sigma H lim 1500-1800 MPa a Ra 0,2 mikronu po brou\u0161en\u00ed metodou H\u00d6FLER pro vysok\u00fd pom\u011br lambda filmu\" \/><\/p>\n<p style=\"font-size: 12.5px; color: #7f8c8d; text-align: center; margin: -14px 0 24px; font-style: italic;\">Tvrd\u00fd bok zubu cementovan\u00fd <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> \u2014 kombinace povrchov\u00e9 tvrdosti HRC 58\u201362 (\u03c3_H lim 1500\u20131800 MPa), Ra \u2264 0,2 \u00b5m brou\u0161en\u00e9ho boku zubu H\u00d6FLER a spr\u00e1vn\u011b specifikovan\u00e9 viskozity oleje EHL poskytuje \u03bb \u2265 2,0 p\u0159i jmenovit\u00fdch ot\u00e1\u010dk\u00e1ch zat\u00ed\u017een\u00ed \u2014 prahovou hodnotu pro prevenci vzniku makro- i mikro-pittingu<\/p>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 14px;\">Korea Ever-Power nab\u00edz\u00ed anal\u00fdzu povrchov\u00fdch poruch: ode\u0161lete vadn\u00e9 <strong>ozuben\u00e9 kolo se spir\u00e1lov\u00fdm \u0159ezem<\/strong> (nebo vysoce kvalitn\u00ed fotografie zobrazuj\u00edc\u00ed um\u00edst\u011bn\u00ed, velikost a charakter po\u0161kozen\u00ed) technick\u00e9mu t\u00fdmu spole\u010dnosti Korea Ever-Power. Do 5 pracovn\u00edch dn\u016f spole\u010dnost Korea Ever-Power identifikuje zp\u016fsob poruchy (makro-pitting, mikro-pitting nebo od\u011br), odhadne pom\u011br \u03bb v dob\u011b poruchy na z\u00e1klad\u011b provozn\u00edch podm\u00ednek a doporu\u010d\u00ed n\u00e1pravnou specifikaci pro n\u00e1hradn\u00ed ozuben\u00e9 kolo \u2013 modernizaci materi\u00e1lu, zm\u011bnu t\u0159\u00eddy p\u0159esnosti, zlep\u0161en\u00ed povrchov\u00e9 \u00fapravy nebo zm\u011bnu specifikace oleje. Jako p\u0159\u00edm\u00fd <a style=\"color: #1a5276; text-decoration: underline;\" href=\"https:\/\/helicalcutgears.top\/cs\/\">v\u00fdrobce \u0161ikm\u00fdch ozuben\u00fdch kol<\/a>N\u00e1hradu vyr\u00e1b\u00ed Korea Ever-Power <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> dle opraven\u00e9 specifikace se stejn\u00fdm dodac\u00edm harmonogramem jako u standardn\u00ed objedn\u00e1vky. Prohl\u00e9dn\u011bte si <a style=\"color: #1a5276; text-decoration: underline;\" href=\"https:\/\/helicalcutgears.top\/cs\/product-category\/helical-gear\/\">sortiment \u0161ikm\u00fdch ozuben\u00fdch kol<\/a> pro v\u0161echny mo\u017enosti materi\u00e1l\u016f a povrchov\u00fdch \u00faprav.<\/p>\n<h2 style=\"font-size: clamp(18px,3vw,24px); color: #1a5276; border-bottom: 3px solid #e67e22; padding-bottom: 8px; margin: 40px 0 16px; font-weight: bold;\">\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<div style=\"border-bottom: 1px solid #e0e0e0; padding: 14px 0;\"><strong style=\"font-size: clamp(14px,2vw,17px); color: #1a5276; line-height: 1.85; margin-bottom: 7px; display: block;\">M\u016f\u017ee se mikropitting na \u0161ikm\u00e9m ozuben\u00e9m kole obr\u00e1tit nebo zastavit bez z\u00e1sahu?<\/strong><\/p>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 0;\">Ano \u2013 mikrod\u016flkov\u00e1 tk\u00e1\u0148 v <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> m\u016f\u017ee se za specifick\u00fdch podm\u00ednek zastavit a stabilizovat. Jak se povrch s mikrokol\u00edky postupn\u011b vyhlazuje (vrcholy drsnosti jsou opot\u0159ebov\u00e1v\u00e1ny samotn\u00fdm procesem mikrokol\u00edky), kombinovan\u00e1 drsnost R_q kles\u00e1, co\u017e zvy\u0161uje \u03bb nad prahovou hodnotu mikrokol\u00edky 2,0. Tento samoregula\u010dn\u00ed mechanismus je n\u011bkdy pozorov\u00e1n v po\u010d\u00e1te\u010dn\u00edm obdob\u00ed z\u00e1b\u011bhu nov\u00fdch ozuben\u00fdch kol \u2013 obdob\u00ed mikrokol\u00edky n\u00e1sledovan\u00e9 stabilizac\u00ed na nov\u00e9m, m\u00edrn\u011b drsn\u011bj\u0161\u00edm, ale stabiln\u00edm povrchu. Na samoregula\u010dn\u00ed chov\u00e1n\u00ed se v\u0161ak nelze spol\u00e9hat pro konstruk\u010dn\u00ed \u00fa\u010dely: pokud je provozn\u00ed \u03bb v\u00fdrazn\u011b ni\u017e\u0161\u00ed ne\u017e 2,0 (nap\u0159. \u03bb = 1,0\u20131,3), mikrokol\u00edky se sp\u00ed\u0161e p\u0159em\u011bn\u00ed na makrokol\u00edky, ne\u017e aby se stabilizovaly. Doporu\u010den\u00ed spole\u010dnosti Korea Ever-Power: pokud analyz\u00e1tor ozuben\u00fdch kol s danou \u017eivotnost\u00ed <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> Pokud vykazuje mikrod\u016flky, ale \u017e\u00e1dn\u00e9 makrod\u016flky, prove\u010fte anal\u00fdzu oleje a v\u00fdpo\u010det \u03bb \u2013 pokud \u03bb &lt; 1,5, zas\u00e1hn\u011bte s modernizac\u00ed oleje p\u0159ed dal\u0161\u00edm intervalem \u00fadr\u017eby.<\/p>\n<\/div>\n<div style=\"border-bottom: 1px solid #e0e0e0; padding: 14px 0;\"><strong style=\"font-size: clamp(14px,2vw,17px); color: #1a5276; line-height: 1.85; margin-bottom: 7px; display: block;\">Pro\u010d se n\u011bkdy u nov\u00e9ho \u0161ikm\u00e9ho ozuben\u00e9ho kola, kter\u00e9 m\u00e1 spr\u00e1vn\u00fd olej a spr\u00e1vn\u00e9 zat\u00ed\u017een\u00ed, objevuje od\u00edr\u00e1n\u00ed?<\/strong><\/p>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 0;\">I po p\u0159esn\u00e9m brou\u0161en\u00ed je nov\u00fd <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> m\u00e1 v\u00fd\u0161ky drsnosti povrchu, kter\u00e9 v prvn\u00edch hodin\u00e1ch provozu \u2013 p\u0159edt\u00edm, ne\u017e z\u00e1b\u011bh vyhlad\u00ed povrch \u2013 vytv\u00e1\u0159ej\u00ed \u03bb pod prahovou hodnotou pln\u00e9ho filmu. Teploty vzplanut\u00ed drsnosti b\u011bhem tohoto po\u010d\u00e1te\u010dn\u00edho obdob\u00ed mohou p\u0159ekro\u010dit T_od\u011br, pokud: (1) olej je\u0161t\u011b neobsahuje dostatek aktiva\u010dn\u00edch produkt\u016f proti od\u011bru z kontakt\u016f b\u011bhem z\u00e1b\u011bhu; (2) ten\/ta\/to <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> je provozov\u00e1n s pln\u00fdm zat\u00ed\u017een\u00edm ihned bez doby z\u00e1b\u011bhu; nebo (3) p\u0159evodovka a olej nejsou p\u0159ed aplikac\u00ed zat\u00ed\u017een\u00ed p\u0159edeh\u0159\u00e1ty. Spole\u010dnost Korea Ever-Power doporu\u010duje 4hodinov\u00fd postupn\u00fd z\u00e1b\u011bh pro v\u0161echny nov\u00e9 motory <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> Instalace ve vysokorychlostn\u00edch pohonech (v &gt; 20 m\/s): za\u010dn\u011bte s jmenovit\u00fdm zat\u00ed\u017een\u00edm 25% po dobu 1 hodiny, pot\u00e9 50% po dobu 1 hodiny, 75% po dobu 1 hodiny a pot\u00e9 pln\u00e9 zat\u00ed\u017een\u00ed \u2013 co\u017e umo\u017e\u0148uje postupn\u00e9 o\u0161et\u0159en\u00ed povrchu a aktivaci aditiv p\u0159ed dosa\u017een\u00edm teploty vzplanut\u00ed p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed.<\/p>\n<\/div>\n<div style=\"border-bottom: 1px solid #e0e0e0; padding: 14px 0;\"><strong style=\"font-size: clamp(14px,2vw,17px); color: #1a5276; line-height: 1.85; margin-bottom: 7px; display: block;\">Kter\u00e1 p\u0159\u00edsada do oleje zabra\u0148uje od\u00edr\u00e1n\u00ed a kter\u00e1 zabra\u0148uje mikropittingu \u2013 jsou to stejn\u00e9?<\/strong><\/p>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 0;\">P\u0159ekr\u00fdvaj\u00ed se, ale nejsou identick\u00e9. Polysulfidov\u00e9 p\u0159\u00edsady pro extr\u00e9mn\u00ed tlak (EP) poskytuj\u00ed jak ochranu proti od\u011bru (vytvo\u0159en\u00edm ob\u011btovan\u00e9 tribovrstvy ze sulfidu \u017eeleza, kter\u00e1 zabra\u0148uje adhezn\u00edmu kontaktu p\u0159i teplot\u011b blesku), tak ochranu proti mikropittingu (sn\u00ed\u017een\u00edm koeficientu t\u0159en\u00ed na nerovn\u00fdch kontaktech pod prahovou hodnotou pro zah\u00e1jen\u00ed mikropittingu). Borit\u00e1nov\u00e9 p\u0159\u00edsady EP poskytuj\u00ed vynikaj\u00edc\u00ed ochranu proti mikropittingu (FVA 54\/7 MLS 10), ale pon\u011bkud ni\u017e\u0161\u00ed ochranu proti od\u011bru ne\u017e polysulfid. Konven\u010dn\u00ed s\u00edrovo-fosforov\u00e9 (S\/P) p\u0159\u00edsady EP poskytuj\u00ed m\u00edrnou ochranu proti od\u011bru, ale obecn\u011b slabou ochranu proti mikropittingu (MLS 6\u20138) v... <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> aplikace. Pro aplikace s vysok\u00fdm po\u010dtem cykl\u016f (v\u011btrn\u00e9 turb\u00edny, reduktory pro elektromobily), kde jsou p\u0159\u00edtomna ob\u011b rizika: specifikujte z\u00e1kladov\u00fd olej PAO + polysulfidov\u00fd EP, co\u017e je jedin\u00fd b\u011b\u017en\u00fd typ aditiva, kter\u00fd dosahuje MLS 10 (mikropitting) A z\u00e1rove\u0148 odpov\u00eddaj\u00edc\u00ed odolnosti proti od\u011bru ve stejn\u00e9m balen\u00ed.<\/p>\n<\/div>\n<div style=\"padding: 14px 0;\"><strong style=\"font-size: clamp(14px,2vw,17px); color: #1a5276; line-height: 1.85; margin-bottom: 7px; display: block;\">M\u00e1 vy\u0161\u0161\u00ed tvrdost <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> zabra\u0148uje od\u011bru l\u00e9pe ne\u017e m\u011bk\u010d\u00ed p\u0159evod?<\/strong><\/p>\n<p style=\"font-size: clamp(14px,2vw,17px); color: #2c3e50; line-height: 1.85; margin-bottom: 0;\">Nev\u00fdznamn\u011b \u2013 od\u00edr\u00e1n\u00ed je ovlivn\u011bno teplotou vzplanut\u00ed a chov\u00e1n\u00edm olejov\u00e9ho filmu, nikoli tvrdost\u00ed sypk\u00e9ho materi\u00e1lu. Cementovan\u00e1 ocel HRC 60 <strong>spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> od\u00edr\u00e1 se p\u0159i p\u0159ibli\u017en\u011b stejn\u00e9 teplot\u011b vzplanut\u00ed jako ozuben\u00e9 kolo QT HB 280, pokud maj\u00ed ob\u011b stejnou drsnost povrchu a olej. Cementovan\u00e1 ozuben\u00e1 kola se v\u0161ak b\u011b\u017en\u011b brous\u00ed na Ra \u2264 0,2 \u00b5m, zat\u00edmco ozuben\u00e1 kola QT s m\u011bkk\u00fdm bokem se obvykle odvaluj\u00ed pouze na Ra \u2248 1,5\u20132,5 \u00b5m. Tento rozd\u00edl v drsnosti znamen\u00e1, \u017ee cementovan\u00e9 ozuben\u00e9 kolo m\u00e1 mnohem vy\u0161\u0161\u00ed \u03bb, a proto pracuje d\u00e1le od prahu od\u00edr\u00e1n\u00ed, i kdy\u017e samotn\u00fd prah teploty od\u00edr\u00e1n\u00ed je podobn\u00fd. Praktick\u00fd v\u00fdsledek: cementov\u00e1no a brou\u0161eno <strong>\u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> jsou v\u00fdrazn\u011b m\u00e9n\u011b n\u00e1chyln\u00e9 k od\u011bru ne kv\u016fli sv\u00e9 vy\u0161\u0161\u00ed tvrdosti jako takov\u00e9, ale proto, \u017ee proces brou\u0161en\u00ed, kter\u00fd n\u00e1sleduje po cementaci, dramaticky sni\u017euje drsnost povrchu.<\/p>\n<\/div>\n<div id=\"contact\" style=\"background: linear-gradient(135deg,#12243e 0%,#1c4a8a 100%); border-radius: 10px; padding: clamp(28px,5%,48px); margin: 48px 0 20px; text-align: center;\">\n<h2 style=\"font-size: clamp(20px,3vw,30px); color: #fff; font-weight: 800; margin: 0 0 12px;\">Odesl\u00e1n\u00ed vadn\u00e9ho \u0161ikm\u00e9ho ozuben\u00e9ho kola k anal\u00fdze povrchov\u00e9ho selh\u00e1n\u00ed<\/h2>\n<p style=\"font-size: clamp(14px,2vw,16.5px); color: rgba(255,255,255,.78); max-width: 520px; margin: 0 auto 26px; line-height: 1.72;\">Za\u0161lete vadn\u00fd p\u0159evod (nebo fotografie zobrazuj\u00edc\u00ed m\u00edsto, rozsah a charakter po\u0161kozen\u00ed) s uveden\u00edm provozn\u00edch podm\u00ednek (v\u00fdkon, ot\u00e1\u010dky, druh oleje, okoln\u00ed teplota). Spole\u010dnost Korea Ever-Power identifikuje zp\u016fsob poruchy \u2013 d\u016flky, mikrod\u016flky nebo od\u011brky \u2013 a do 5 pracovn\u00edch dn\u016f doporu\u010d\u00ed n\u00e1pravnou specifikaci.<\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-bottom: 12px;\"><a style=\"display: inline-block; background: #e67e22; color: #fff; font-weight: bold; font-size: clamp(13px,1.8vw,15px); padding: 13px 28px; border-radius: 6px; text-decoration: none;\" href=\"#contact\">Odeslat po\u017eadavek na anal\u00fdzu selh\u00e1n\u00ed<\/a><br \/>\n<a style=\"display: inline-block; background: transparent; color: #fff; font-weight: bold; font-size: clamp(13px,1.8vw,15px); padding: 13px 28px; border-radius: 6px; text-decoration: none; border: 2px solid rgba(255,255,255,.55);\" href=\"https:\/\/helicalcutgears.top\/cs\/product-category\/helical-gear\/\">Produktov\u00e1 \u0159ada \u0161ikm\u00fdch ozuben\u00fdch kol<\/a><\/div>\n<p style=\"font-size: clamp(12px,1.6vw,13.5px); color: rgba(255,255,255,.48); margin: 0;\">Koroze \u00b7 Mikrokoroze \u00b7 Od\u011br \u00b7 V\u00fdpo\u010det \u03bb \u00b7 Doporu\u010den\u00ed oleje \u00b7 Specifikace opravy \u00b7 5 pracovn\u00edch dn\u016f<\/p>\n<\/div>\n<p>St\u0159iha\u010d: Cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Helical Gear Surface Failure \u2014 Pitting, Micropitting and Scuffing Distinguished and Prevented Three distinct surface failure mechanisms affect the tooth flanks of a helical gear \u2014 pitting, micropitting, and scuffing \u2014 and each requires a different prevention strategy. Confusing them leads to the wrong intervention: applying high-EP additive oil to a helical gear with macropitting [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[3082],"tags":[],"class_list":["post-2399","post","type-post","status-publish","format-standard","hentry","category-helical-gears"],"_links":{"self":[{"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/posts\/2399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/comments?post=2399"}],"version-history":[{"count":2,"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/posts\/2399\/revisions"}],"predecessor-version":[{"id":2401,"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/posts\/2399\/revisions\/2401"}],"wp:attachment":[{"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/media?parent=2399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/categories?post=2399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/helicalcutgears.top\/cs\/wp-json\/wp\/v2\/tags?post=2399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}