{"id":2276,"date":"2026-06-23T07:01:39","date_gmt":"2026-06-23T07:01:39","guid":{"rendered":"https:\/\/helicalcutgears.top\/?p=2276"},"modified":"2026-06-23T07:01:39","modified_gmt":"2026-06-23T07:01:39","slug":"helical-gear-material-selection-guide","status":"publish","type":"post","link":"https:\/\/helicalcutgears.top\/cs\/helical-gear-material-selection-guide\/","title":{"rendered":"Pr\u016fvodce v\u00fdb\u011brem materi\u00e1lu pro \u0161ikm\u00e1 ozuben\u00e1 kola \u2013 v\u0161echny jakosti od 45# do 17CrNiMo6 s matic\u00ed pou\u017eit\u00ed"},"content":{"rendered":"
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Pr\u016fvodce v\u00fdb\u011brem materi\u00e1lu pro \u0161ikm\u00e1 ozuben\u00e1 kola \u2013 v\u0161echny jakosti od 45# do 17CrNiMo6<\/h1>\n

V\u00fdb\u011br spr\u00e1vn\u00e9 jakosti oceli pro \u0161ikm\u00e9 ozuben\u00e9 kolo ovliv\u0148uje \u00fanavovou \u017eivotnost, odolnost proti r\u00e1z\u016fm, slo\u017eitost tepeln\u00e9ho zpracov\u00e1n\u00ed a n\u00e1klady \u2013 \u010dasto faktorem 2\u20135\u00d7 u v\u0161ech dostupn\u00fdch jakost\u00ed. Tato p\u0159\u00edru\u010dka zahrnuje v\u0161echny relevantn\u00ed materi\u00e1ly od z\u00e1kladn\u00ed uhl\u00edkov\u00e9 oceli 45# p\u0159es pr\u00e9miov\u00e9 jakosti 17CrNiMo6 a\u017e po nerezov\u00e9 oceli, s krit\u00e9rii v\u00fdb\u011bru, \u00fadaji o \u00fanav\u011b a aplika\u010dn\u00ed matic\u00ed pot\u0159ebnou pro spr\u00e1vnou volbu.<\/p>\n

\u017d\u00e1dost o doporu\u010den\u00ed materi\u00e1lu \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

T\u0159\u00edvrstv\u00fd materi\u00e1lov\u00fd r\u00e1mec pro \u0161ikm\u00e1 ozuben\u00e1 kola<\/h2>\n

V\u0161echny ocelov\u00e9 materi\u00e1ly pou\u017e\u00edvan\u00e9 pro \u0161ikm\u00e1 ozuben\u00e1 kola<\/strong> spadaj\u00ed do jedn\u00e9 ze t\u0159\u00ed v\u00fdkonnostn\u00edch \u00farovn\u00ed, ur\u010den\u00fdch dosa\u017eitelnou tvrdost\u00ed povrchu boku zubu a tepeln\u00fdm zpracov\u00e1n\u00edm pot\u0159ebn\u00fdm k jej\u00edmu dosa\u017een\u00ed. V\u00fdb\u011br \u00farovn\u011b ovliv\u0148uje v\u0161echny ostatn\u00ed volby materi\u00e1lu \u2013 je to prvn\u00ed rozhodnut\u00ed p\u0159ed specifikac\u00ed konkr\u00e9tn\u00edho jakosti, hloubky tepeln\u00e9ho zpracov\u00e1n\u00ed nebo t\u0159\u00eddy p\u0159esnosti:<\/p>\n

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\u00darove\u0148 1 \u2013 M\u011bkk\u00fd bok zubu (HB \u2264 350)<\/strong><\/p>\n

Ozuben\u00e9 kolo se \u0159e\u017ee po tepeln\u00e9m zpracov\u00e1n\u00ed (QT nebo normalizace). Kone\u010dn\u00e1 tvrdost povrchu omezena na HB 350. \u017d\u00e1dn\u00e9 dodate\u010dn\u00e9 kalen\u00ed, kter\u00e9 by deformovalo profil. T\u0159\u00edda DIN 7\u20139 odvalov\u00e1n\u00edm. Nejni\u017e\u0161\u00ed n\u00e1klady a nejkrat\u0161\u00ed dodac\u00ed lh\u016fta. P\u0159\u00edklady: 45#, 40Cr, 35CrMo. Pou\u017eit\u00ed: v\u0161eobecn\u00e9 pr\u016fmyslov\u00e9 p\u0159evodovky, je\u0159\u00e1by, dopravn\u00edky, pohony \u010derpadel se st\u0159edn\u00edm zat\u00ed\u017een\u00edm p\u0159i rychlosti pod 15 m\/s.<\/p>\n<\/div>\n

Stupe\u0148 2 \u2013 St\u0159edn\u011b tvrd\u00e1 (HRC 45\u201355)<\/strong><\/p>\n

Induk\u010dn\u011b kalen\u00fd povrch s j\u00e1drem QT. Brou\u0161en\u00ed po kalen\u00ed obnovuje p\u0159esnost. \u017divotnost p\u0159i kontaktn\u00ed \u00fanav\u011b v\u00fdrazn\u011b vy\u0161\u0161\u00ed ne\u017e u Tier 1. P\u0159\u00edklady: 42CrMo induk\u010dn\u00ed HRC 50\u201355. Pou\u017eit\u00ed: pastorky hrubovac\u00edch stolic v\u00e1lcovac\u00edch stolic, pohony drti\u010d\u016f, st\u0159edn\u011b t\u011b\u017en\u00ed pohony, kde mus\u00ed b\u00fdt odolnost proti r\u00e1z\u016fm vyv\u00e1\u017eena tvrdost\u00ed povrchu.<\/p>\n<\/div>\n

\u00darove\u0148 3 \u2013 Tvrd\u00fd bok zubu (HRC 58\u201362)<\/strong><\/p>\n

Cementace (nebo nitridace plynem) s brou\u0161en\u00edm zub\u016f dle DIN t\u0159\u00eddy 4\u20136. Maxim\u00e1ln\u00ed kontaktn\u00ed \u00fanavov\u00e1 pevnost a \u017eivotnost. P\u0159\u00edklady: 20CrMnTi, 20CrNiMo, 17CrNiMo6. Pou\u017eit\u00ed: automobilov\u00fd pr\u016fmysl, elektromobily, CNC, n\u00e1mo\u0159n\u00ed pr\u016fmysl, leteck\u00fd pr\u016fmysl, vysokocyklov\u00fd pr\u016fmysl \u2013 jak\u00e9koli aplikace, kde je kritick\u00e1 \u00fanavov\u00e1 \u017eivotnost, hluk a rozsah ot\u00e1\u010dek.<\/p>\n<\/div>\n<\/div>\n

Kompletn\u00ed referen\u010dn\u00ed p\u0159\u00edru\u010dka k materi\u00e1lov\u00fdm t\u0159\u00edd\u00e1m<\/h2>\n

\"Tvrdozuben\u00e9<\/p>\n

Tvrd\u00fd bok zubu cementovan\u00fd spir\u00e1lov\u00e9 ozuben\u00e9 kolo<\/strong> \u2014 kombinace povrchov\u00e9 tvrdosti HRC 58\u201362, kontrolovan\u00e9 hloubky pouzdra a hou\u017eevnat\u00e9ho j\u00e1dra QT je dosa\u017eiteln\u00e1 s ocel\u00ed 20CrMnTi (standardn\u00ed jakost) nebo 17CrNiMo6 (pr\u00e9miov\u00e1 jakost pro n\u00e1mo\u0159n\u00ed a offshore pou\u017eit\u00ed)<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Stupe\u0148<\/th>\nEkvivalent DIN<\/th>\nMetoda HT<\/th>\nTvrdost povrchu<\/th>\n\u03c3_H limit (MPa)<\/th>\nCharpyho p\u0159i \u221220 \u00b0C<\/th>\nRelativn\u00ed n\u00e1klady<\/th>\nPrim\u00e1rn\u00ed aplikace<\/th>\n<\/tr>\n<\/thead>\n
45#<\/td>\nC45 \/ Ck45<\/td>\nQT (HB 220\u2013280)<\/td>\nHB 220\u2013280<\/td>\n490\u2013560<\/td>\n20\u201330 J<\/td>\n1,0\u00d7 (v\u00fdchoz\u00ed hodnota)<\/td>\nPr\u016fmyslov\u00e9 konstrukce s m\u011bkk\u00fdmi boky: je\u0159\u00e1by, dopravn\u00edky, n\u00edzkorychlostn\u00ed pohony \u010derpadel<\/td>\n<\/tr>\n
40Cr<\/td>\n41Cr4<\/td>\nQT (HB 260\u2013320)<\/td>\nHB 260\u2013320<\/td>\n530\u2013600<\/td>\n25\u201335 J<\/td>\n1,1\u00d7<\/td>\nVylep\u0161en\u00fd m\u011bkk\u00fd bok: st\u0159edn\u011b pr\u016fmyslov\u00e9 pohony namontovan\u00e9 na h\u0159\u00eddeli<\/td>\n<\/tr>\n
42CrMo<\/td>\n42CrMo4<\/td>\nQT (HB 280\u2013320) nebo induk\u010dn\u00ed HRC 50\u201355<\/td>\nHB 280\u2013320 nebo HRC 50\u201355<\/td>\n590\u2013680 (QT); 820\u2013950 (induk\u010dn\u00ed)<\/td>\n35\u201350 J (QT); 25\u201340 J (indukce)<\/td>\n1,2\u20131,5\u00d7<\/td>\nV\u00e1lcovac\u00ed stolice, pastorky drti\u010d\u016f, d\u016fln\u00ed kladkostroje, navij\u00e1ky pro t\u011b\u017ebu na mo\u0159i<\/td>\n<\/tr>\n
20CrMnTi<\/td>\n20MnCr5 (p\u0159ibli\u017en\u011b)<\/td>\nCementace + Q + T; HRC 58\u201362<\/td>\nHRC 58\u201362; hloubka pouzdra 0,8\u20131,5 mm<\/td>\n1500\u20131650<\/td>\n30\u201350 J (j\u00e1dro)<\/td>\n1,8\u20132,2\u00d7<\/td>\nStandardn\u00ed automobilov\u00fd pr\u016fmysl, reduktory pro elektromobily, CNC obr\u00e1b\u011bc\u00ed stroje, pr\u016fmyslov\u00e9 p\u0159esn\u00e9 p\u0159evodovky<\/td>\n<\/tr>\n
20CrNiMo<\/td>\n21NiCrMo2<\/td>\nCementace + Q + T; HRC 58\u201362<\/td>\nHRC 58\u201362; hloubka pouzdra 0,8\u20131,8 mm<\/td>\n1500\u20131700<\/td>\n40\u201360 J (j\u00e1dro)<\/td>\n2,2\u20132,6\u00d7<\/td>\nVysokocyklov\u00fd pr\u016fmysl, t\u011b\u017ek\u00fd automobilov\u00fd pr\u016fmysl, kde je pot\u0159eba lep\u0161\u00ed hou\u017eevnatost j\u00e1dra ne\u017e 20CrMnTi<\/td>\n<\/tr>\n
17CrNiMo6<\/td>\n17CrNiMo6 (stejn\u00e9 dle DIN)<\/td>\nCementace + Q + T; HRC 58\u201362<\/td>\nHRC 58\u201362; hloubka pouzdra 1,0\u20132,5 mm<\/td>\n1600\u20131800<\/td>\n55\u201380 J p\u0159i \u221240 \u00b0C<\/td>\n2,8\u20133,5\u00d7<\/td>\nN\u00e1mo\u0159n\u00ed (s certifikac\u00ed DNV), pob\u0159e\u017en\u00ed, arktick\u00e9 slu\u017eby, n\u00e1mo\u0159n\u00ed, d\u016fln\u00ed zved\u00e1ky vy\u017eaduj\u00edc\u00ed teplotu \u221240 \u00b0C Charpy<\/td>\n<\/tr>\n
38CrMoAl<\/td>\n41CrAlMo7<\/td>\nPlynov\u00e1 nitridace; HV 700+ (HRC 62+)<\/td>\nHV 700\u2013900; hloubka pouzdra 0,1\u20130,5 mm<\/td>\n1200\u20131450<\/td>\n25\u201335 J<\/td>\n2,5\u20133,0\u00d7<\/td>\nP\u0159evodovky obr\u00e1b\u011bc\u00edch stroj\u016f vy\u017eaduj\u00edc\u00ed rozm\u011brovou stabilitu po kalen\u00ed<\/td>\n<\/tr>\n
SS316L<\/td>\n1.4404<\/td>\n\u017d\u00edh\u00e1n\u00ed v roztoku + voliteln\u011b nitridace v plynu<\/td>\nHB 160\u2013200 (\u017e\u00edhan\u00e9); HV 800+ (nitridovan\u00e9)<\/td>\n520\u2013650<\/td>\nVynikaj\u00edc\u00ed<\/td>\n3,5\u20135,0\u00d7<\/td>\nZ\u00f3na p\u0159\u00edm\u00e9ho kontaktu s potravin\u00e1\u0159sk\u00fdm pr\u016fmyslem, farmaceutick\u00fd pr\u016fmysl, pomocn\u00e1 \u010derpadla pro lodn\u00ed pr\u016fmysl<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Kdy upgradovat z 20CrMnTi na 17CrNiMo6<\/h2>\n

Jak 20CrMnTi, tak 17CrNiMo6 jsou cementov\u00e1ny na HRC 58\u201362 a dosahuj\u00ed podobn\u00e9 kontaktn\u00ed \u00fanavov\u00e9 pevnosti (\u03c3_H lim). Rozhodnut\u00ed o p\u0159echodu na 17CrNiMo6 \u2013 p\u0159i 1,5\u20132n\u00e1sobku n\u00e1klad\u016f na materi\u00e1l \u2013 je od\u016fvodn\u011bno t\u0159emi specifick\u00fdmi po\u017eadavky, kter\u00e9 20CrMnTi nem\u016f\u017ee spolehliv\u011b splnit:<\/p>\n