{"id":23489,"date":"2025-02-07T09:00:38","date_gmt":"2025-02-07T01:00:38","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=23489"},"modified":"2026-10-09T02:21:34","modified_gmt":"2026-10-08T18:21:34","slug":"billet-vs-cast-understanding-the-key-differences","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/cs\/blog\/billet-vs-cast-understanding-the-key-differences\/","title":{"rendered":"Polotovar vs. odlitek: hlavn\u00ed rozd\u00edly"},"content":{"rendered":"

\"\"<\/p>\n

Hlin\u00edk obr\u00e1b\u011bn\u00fd z polotovaru a lit\u00fd hlin\u00edk p\u0159edstavuj\u00ed dva odli\u0161n\u00e9 zp\u016fsoby v\u00fdroby vysoce v\u00fdkonn\u00fdch hlin\u00edkov\u00fdch d\u00edl\u016f, nap\u0159\u00edklad blok\u016f motor\u016f, p\u00edst\u016f nebo sou\u010d\u00e1st\u00ed p\u0159evodovek.<\/p>\n

Hlin\u00edkov\u00fd polotovar se obr\u00e1b\u00ed z jednoho kusu materi\u00e1lu, obvykle slitiny, pomoc\u00ed CNC stroj\u016f. V\u00fdsledn\u00e9 d\u00edly maj\u00ed ve srovn\u00e1n\u00ed s lit\u00fdm hlin\u00edkem vy\u0161\u0161\u00ed pevnost v tahu i mez kluzu. P\u0159i lit\u00ed, nap\u0159\u00edklad do p\u00edsku, se roztaven\u00e1 slitina vl\u00e9v\u00e1 do formy a vznikaj\u00ed slo\u017eit\u00e9 tvary, av\u0161ak kv\u016fli mo\u017en\u00fdm dutin\u00e1m \u010di nerovnom\u011brnostem m\u016f\u017ee b\u00fdt pevnost ni\u017e\u0161\u00ed.<\/p>\n

D\u00edly z polotovaru se obr\u00e1b\u011bj\u00ed z pln\u00e9ho kusu materi\u00e1lu, a proto jsou velmi pevn\u00e9. Up\u0159ednost\u0148uj\u00ed se v automobilov\u00e9m a leteck\u00e9m pr\u016fmyslu, kde je z\u00e1sadn\u00ed p\u0159esnost n\u00e1vrhu a celkov\u00e1 pevnost.<\/p>\n

Lit\u00e9 d\u00edly, nap\u0159\u00edklad bloky motor\u016f, jsou n\u00e1kladov\u011b efektivn\u00ed pro hromadnou v\u00fdrobu. V\u00fdroba z hlin\u00edkov\u00e9ho polotovaru v\u0161ak odstra\u0148uje slab\u00e1 m\u00edsta, kter\u00e1 mohou vznikat p\u0159i lit\u00ed, a nab\u00edz\u00ed pevn\u011bj\u0161\u00ed alternativu.<\/p>\n

Pevnost lze zv\u00fd\u0161it tak\u00e9 kov\u00e1n\u00edm. Diskuse o polotovaru a odlitku se v\u0161ak \u010dasto soust\u0159ed\u00ed na pom\u011br mezi spot\u0159ebou materi\u00e1lu, efektivitou v\u00fdroby a v\u00fdsledn\u00fdmi vlastnostmi. Hlin\u00edkov\u00fd polotovar v\u00edt\u011bz\u00ed tam, kde jsou \u017eivotnost a struktur\u00e1ln\u00ed integrita nezbytn\u00e9.<\/p>\n

Pro lep\u0161\u00ed p\u0159edstavu se pod\u00edvejte na tabulku:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Hledisko<\/strong><\/th>\nHlin\u00edkov\u00fd polotovar<\/strong><\/th>\nLit\u00fd hlin\u00edk<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Typ materi\u00e1lu<\/strong><\/td>\nObr\u00e1b\u011bn\u00fd z pln\u00e9ho bloku materi\u00e1lu (slitina 6061)<\/td>\nVznik\u00e1 odlit\u00edm roztaven\u00e9 slitiny (nap\u0159\u00edklad A380) do formy<\/td>\n<\/tr>\n
V\u00fdrobn\u00ed proces<\/strong><\/td>\nP\u0159esn\u00e9 obr\u00e1b\u011bn\u00ed na CNC stroji<\/td>\nLit\u00ed do p\u00edsku, tlakov\u00e9 lit\u00ed nebo jin\u00e9 metody odl\u00e9v\u00e1n\u00ed<\/td>\n<\/tr>\n
Pevnost<\/strong><\/td>\nVy\u0161\u0161\u00ed mez kluzu (40\u00a0000 PSI), jednotn\u00e1 struktura zrna<\/td>\nNi\u017e\u0161\u00ed mez kluzu (23\u00a0100 PSI), mo\u017en\u00e9 p\u00f3rovit\u00e9 vady<\/td>\n<\/tr>\n
Pevnost v tahu<\/strong><\/td>\n45\u00a0000 PSI (6061-T6)<\/td>\n47\u00a0000 PSI (A380), ale ni\u017e\u0161\u00ed struktur\u00e1ln\u00ed integrita<\/td>\n<\/tr>\n
Pou\u017eit\u00ed<\/strong><\/td>\nLeteck\u00e9 sou\u010d\u00e1sti, p\u0159esn\u00e9 d\u00edly z polotovaru, p\u00edsty<\/td>\nBloky motor\u016f, sk\u0159\u00edn\u011b p\u0159evodovek, velkos\u00e9riov\u00e9 odlitky<\/td>\n<\/tr>\n
Pou\u017eit\u00fd materi\u00e1l<\/strong><\/td>\nJeden blok surov\u00e9 slitiny<\/td>\n\u010casto se znovu pou\u017e\u00edv\u00e1 recyklovan\u00fd nebo kovov\u00fd odpad<\/td>\n<\/tr>\n
Flexibilita n\u00e1vrhu<\/strong><\/td>\nIde\u00e1ln\u00ed pro slo\u017eitou geometrii obr\u00e1b\u011bnou CNC<\/td>\nVhodn\u00fd pro slo\u017eit\u00e9 tvary, nap\u0159\u00edklad automobilov\u00e9 d\u00edly<\/td>\n<\/tr>\n
N\u00e1klady<\/strong><\/td>\nVy\u0161\u0161\u00ed (obr\u00e1b\u011bn\u00ed n\u00e1ro\u010dn\u00e9 na pr\u00e1ci a materi\u00e1l)<\/td>\nNi\u017e\u0161\u00ed p\u0159i hromadn\u00e9 v\u00fdrob\u011b, nap\u0159\u00edklad automobilov\u00fdch odlitk\u016f<\/td>\n<\/tr>\n
Vady<\/strong><\/td>\nMinim\u00e1ln\u00ed po\u010det dutin; jednotn\u00e1 struktura<\/td>\nRiziko p\u00f3rovitosti, vm\u011bstk\u016f nebo vzduchov\u00fdch kapes<\/td>\n<\/tr>\n
B\u011b\u017en\u00e9 slitiny<\/strong><\/td>\n6061, 7075 (slitiny vhodn\u00e9 k obr\u00e1b\u011bn\u00ed)<\/td>\nA380, A356 (optimalizovan\u00e9 pro lit\u00ed)<\/td>\n<\/tr>\n
Hlavn\u00ed v\u00fdhoda<\/strong><\/td>\nVy\u0161\u0161\u00ed pevnost ne\u017e u odlitk\u016f, p\u0159esnost a dlouh\u00e1 \u017eivotnost<\/td>\nN\u00e1kladov\u00e1 efektivita a \u00fa\u010dinn\u00e1 v\u00fdroba slo\u017eit\u00fdch tvar\u016f, nap\u0159\u00edklad blok\u016f motor\u016f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Co jsou polotovary a odlitky?<\/h2>\n

Polotovary a odlitky nab\u00edzej\u00ed r\u016fzn\u00e9 v\u00fdhody podle zam\u00fd\u0161len\u00e9ho pou\u017eit\u00ed.<\/p>\n

Polotovar je cen\u011bn pro pevnost a p\u0159esnost, zat\u00edmco odl\u00e9van\u00e9 materi\u00e1ly umo\u017e\u0148uj\u00ed levn\u011bji vytv\u00e1\u0159et slo\u017eit\u00e9 tvary.<\/p>\n

Definice polotovaru<\/h3>\n

Polotovar je pevn\u00fd kus kovu od\u0159\u00edznut\u00fd z v\u011bt\u0161\u00edho bloku. Vyzna\u010duje se vysokou p\u0159esnost\u00ed a pevnost\u00ed.<\/p>\n

Obr\u00e1b\u011bn\u00edm lze polotovar vytvarovat t\u00e9m\u011b\u0159 do libovoln\u00e9 podoby, co\u017e z n\u011bj \u010din\u00ed velmi univerz\u00e1ln\u00ed materi\u00e1l. Obr\u00e1b\u011bn\u00ed m\u016f\u017ee zahrnovat fr\u00e9zov\u00e1n\u00ed, \u0159ez\u00e1n\u00ed pilou nebo soustru\u017een\u00ed.<\/p>\n

Jednou z hlavn\u00edch v\u00fdhod polotovaru je jeho jednotn\u00e1 struktura. D\u00edky tomu se hod\u00ed pro aplikace vy\u017eaduj\u00edc\u00ed vysokou pevnost a \u017eivotnost.<\/p>\n

Polotovary se \u010dasto pou\u017e\u00edvaj\u00ed v leteck\u00e9m a automobilov\u00e9m pr\u016fmyslu, kde je z\u00e1sadn\u00ed spolehlivost. Jsou sice dra\u017e\u0161\u00ed ne\u017e odlitky, ale nab\u00edzej\u00ed vynikaj\u00edc\u00ed struktur\u00e1ln\u00ed integritu, kter\u00e1 m\u016f\u017ee u kritick\u00fdch aplikac\u00ed vy\u0161\u0161\u00ed cenu ospravedlnit.<\/p>\n

Definice odlitku<\/h3>\n

P\u0159i odl\u00e9v\u00e1n\u00ed se tekut\u00fd kov nalije do formy, kde vychladne a ztuhne do po\u017eadovan\u00e9ho tvaru. Jde o n\u00e1kladov\u011b efektivn\u00ed zp\u016fsob v\u00fdroby slo\u017eit\u00fdch tvar\u016f, kter\u00fdch by se z polotovaru dosahovalo obt\u00ed\u017en\u011b.<\/p>\n

Odl\u00e9v\u00e1n\u00ed umo\u017e\u0148uje vyr\u00e1b\u011bt slo\u017eit\u00e9 n\u00e1vrhy s detailn\u00edmi prvky.<\/p>\n

Nemus\u00ed dosahovat stejn\u00e9 p\u0159esnosti jako polotovar, ale vynik\u00e1 p\u0159i v\u00fdrob\u011b d\u00edl\u016f se slo\u017eit\u00fdmi tvary. Formy mohou b\u00fdt z r\u016fzn\u00fdch materi\u00e1l\u016f, co\u017e d\u00e1v\u00e1 procesu zna\u010dnou flexibilitu.<\/p>\n

Proto\u017ee b\u00fdv\u00e1 levn\u011bj\u0161\u00ed, je odl\u00e9v\u00e1n\u00ed obl\u00edben\u00e9 p\u0159i velkos\u00e9riov\u00e9 v\u00fdrob\u011b nekritick\u00fdch d\u00edl\u016f. V\u00fdrobci tak mohou sn\u00ed\u017eit n\u00e1klady bez v\u00fdrazn\u00e9ho kompromisu v kvalit\u011b.<\/p>\n

V\u00fdrobn\u00ed procesy<\/h2>\n

\"Interi\u00e9r<\/p>\n

P\u0159i rozhodov\u00e1n\u00ed mezi d\u00edly z polotovaru a odlitky je d\u016fle\u017eit\u00e9 rozum\u011bt jejich v\u00fdrobn\u00edm proces\u016fm.<\/p>\n

Polotovary se p\u0159esn\u011b obr\u00e1b\u011bj\u00ed, zat\u00edmco p\u0159i odl\u00e9v\u00e1n\u00ed se kov tvaruje pomoc\u00ed forem.<\/p>\n

Jak se vyr\u00e1b\u011bj\u00ed polotovary<\/h3>\n

V\u00fdroba polotovaru za\u010d\u00edn\u00e1 kusem kovu, kter\u00fd se obvykle z\u00edsk\u00e1v\u00e1 kontinu\u00e1ln\u00edm lit\u00edm nebo v\u00e1lcov\u00e1n\u00edm za tepla.<\/p>\n

Materi\u00e1l se roz\u0159e\u017ee na d\u00e9lky ozna\u010dovan\u00e9 jako polotovary nebo ty\u010de. N\u00e1sledn\u011b se obr\u00e1b\u00ed na CNC stroj\u00edch \u010di jin\u00fdmi n\u00e1stroji na po\u017eadovan\u00fd tvar a rozm\u011bry.<\/p>\n

Tento \u00fab\u011brov\u00fd proces m\u016f\u017ee b\u00fdt \u010dasov\u011b n\u00e1ro\u010dn\u00fd, ale umo\u017e\u0148uje dos\u00e1hnout vysok\u00e9 p\u0159esnosti. Je vhodn\u00fd pro d\u00edly s p\u0159\u00edsn\u00fdmi tolerancemi a vysok\u00fdmi po\u017eadavky na struktur\u00e1ln\u00ed integritu.<\/p>\n

Vysv\u011btlen\u00ed procesu odl\u00e9v\u00e1n\u00ed<\/h3>\n

P\u0159i odl\u00e9v\u00e1n\u00ed se kov roztav\u00ed a nalije do formy. Roztaven\u00fd kov vypln\u00ed formu a p\u0159i chladnut\u00ed a tuhnut\u00ed z\u00edsk\u00e1 jej\u00ed tvar.<\/p>\n

Tento proces se pova\u017euje za aditivn\u00ed, proto\u017ee vytv\u00e1\u0159\u00ed tvar postupn\u00fdm dopl\u0148ov\u00e1n\u00edm materi\u00e1lu.<\/p>\n

Odl\u00e9v\u00e1n\u00ed b\u00fdv\u00e1 p\u0159i velkos\u00e9riov\u00e9 v\u00fdrob\u011b rychlej\u0161\u00ed a levn\u011bj\u0161\u00ed. Mo\u017enou nev\u00fdhodou je ni\u017e\u0161\u00ed pevnost v tahu zp\u016fsoben\u00e1 p\u00f3rovitost\u00ed. Odl\u00e9v\u00e1n\u00ed v\u0161ak omezuje pot\u0159ebu rozs\u00e1hl\u00e9ho n\u00e1sledn\u00e9ho obr\u00e1b\u011bn\u00ed, a proto se hod\u00ed pro slo\u017eit\u00e9 tvary i velk\u00e9 s\u00e9rie.<\/p>\n

Vlastnosti materi\u00e1lu<\/h2>\n

Kovov\u00e9 polotovary maj\u00ed kvalitn\u011bj\u0161\u00ed strukturu zrna, zat\u00edmco odl\u00e9van\u00e9 kovy nab\u00edzej\u00ed specifick\u00e9 vlastnosti cenn\u00e9 pro ur\u010dit\u00e1 pou\u017eit\u00ed.<\/p>\n

Struktura zrna v polotovaru<\/h3>\n

Polotovar se obr\u00e1b\u00ed z pln\u00e9ho bloku, tak\u017ee m\u00e1 po cel\u00e9m pr\u016f\u0159ezu jednotnou strukturu zrna. Souvisl\u00fd tok zrna p\u0159isp\u00edv\u00e1 k pevnosti a \u017eivotnosti, a proto se polotovary \u010dasto vol\u00ed pro aplikace s vysok\u00fdm nam\u00e1h\u00e1n\u00edm.<\/p>\n

Homogenn\u00ed struktura omezuje slab\u00e1 m\u00edsta. Polotovary se pou\u017e\u00edvaj\u00ed nap\u0159\u00edklad v p\u0159esn\u00fdch leteck\u00fdch sou\u010d\u00e1stech a v\u00fdkonn\u00fdch automobilov\u00fdch d\u00edlech, kde jsou z\u00e1sadn\u00ed spolehlivost a odolnost.<\/p>\n

Dal\u0161\u00ed v\u00fdhodou je mo\u017enost obr\u00e1b\u011bt polotovar do slo\u017eit\u00fdch tvar\u016f bez v\u00fdrazn\u00e9ho naru\u0161en\u00ed jeho integrity.<\/p>\n

Vlastnosti odl\u00e9van\u00e9ho kovu<\/h3>\n

Odl\u00e9van\u00fd kov vznik\u00e1 nalit\u00edm roztaven\u00e9ho kovu do formy a jeho n\u00e1sledn\u00fdm ztuhnut\u00edm.<\/p>\n

\u010casto se pou\u017e\u00edv\u00e1 v automobilov\u00e9m pr\u016fmyslu a v pr\u016fmyslov\u00fdch aplikac\u00edch. Kv\u016fli v\u00fdrobn\u00ed metod\u011b m\u016f\u017ee m\u00edt p\u00f3rovitost, kter\u00e1 ovliv\u0148uje pevnost. P\u0159esto se hod\u00ed pro \u0159adu pou\u017eit\u00ed vy\u017eaduj\u00edc\u00edch slo\u017eit\u00e9 tvary bez vysok\u00e9ho zat\u00ed\u017een\u00ed.<\/p>\n

Pou\u017eit\u00ed<\/h2>\n

\"\"<\/p>\n

Polotovary v pr\u016fmyslov\u00fdch aplikac\u00edch<\/h3>\n

Polotovary jsou zn\u00e1m\u00e9 svou pevnost\u00ed a p\u0159esnost\u00ed. \u010casto se obr\u00e1b\u011bj\u00ed na d\u00edly, kter\u00e9 mus\u00ed odol\u00e1vat vysok\u00e9mu nam\u00e1h\u00e1n\u00ed a tlaku.<\/p>\n

Pou\u017e\u00edvaj\u00ed se v t\u011b\u017ek\u00fdch stroj\u00edch, leteck\u00fdch sou\u010d\u00e1stech a automobilov\u00fdch d\u00edlech, nap\u0159\u00edklad kolech a \u010d\u00e1stech zav\u011b\u0161en\u00ed. Jsou obl\u00edben\u00e9 tak\u00e9 pro zak\u00e1zkov\u00e9 v\u00fdrobky, proto\u017ee je lze p\u0159esn\u011b obrobit do jedine\u010dn\u00fdch tvar\u016f.<\/p>\n

Hod\u00ed se pro odv\u011btv\u00ed, kter\u00e1 oce\u0148uj\u00ed v\u00fdkon a individu\u00e1ln\u00ed n\u00e1vrh. Odolnost v\u016f\u010di teplu a tlaku z nich \u010din\u00ed vynikaj\u00edc\u00ed volbu pro kritick\u00e9 nosn\u00e9 sou\u010d\u00e1sti.<\/p>\n

B\u011b\u017en\u00e9 pou\u017eit\u00ed odlitk\u016f<\/h3>\n

Odl\u00e9van\u00e9 kovy jsou d\u016fle\u017eit\u00e9 v odv\u011btv\u00edch vy\u017eaduj\u00edc\u00edch slo\u017eit\u00e9 tvary a velkos\u00e9riovou v\u00fdrobu. B\u011b\u017en\u011b se z nich vyr\u00e1b\u011bj\u00ed bloky motor\u016f, potrub\u00ed a stavebn\u00ed sou\u010d\u00e1sti.<\/p>\n

D\u00edky mo\u017enosti vytv\u00e1\u0159et slo\u017eit\u00e9 tvary jsou obl\u00edben\u00e9 pro instalat\u00e9rsk\u00e9 a dom\u00e1c\u00ed armatury. V automobilov\u00e9m pr\u016fmyslu se odlitky cen\u00ed pro pevnost p\u0159i relativn\u011b n\u00edzk\u00e9 hmotnosti.<\/p>\n

Odl\u00e9v\u00e1n\u00ed umo\u017e\u0148uje pou\u017e\u00edvat \u0161irokou \u0161k\u00e1lu kovov\u00fdch slitin, a nab\u00edz\u00ed tak flexibilitu v\u00fdroby. P\u0159i v\u00fdrob\u011b velk\u00fdch s\u00e9ri\u00ed b\u00fdvaj\u00ed odlitky tak\u00e9 n\u00e1kladov\u011b efektivn\u00ed, tak\u017ee se hod\u00ed pro komer\u010dn\u00ed v\u00fdrobky.<\/p>\n

N\u00e1klady<\/h2>\n

Anal\u00fdza n\u00e1klad\u016f na polotovar<\/h3>\n

V\u00fdroba d\u00edlu z hlin\u00edkov\u00e9ho polotovaru obr\u00e1b\u011bn\u00edm pln\u00e9ho bloku je n\u00e1kladn\u011bj\u0161\u00ed. Metoda nab\u00edz\u00ed vysokou p\u0159esnost a umo\u017e\u0148uje dodr\u017eet detailn\u00ed specifikace.<\/p>\n

N\u00e1klady zvy\u0161uj\u00ed n\u00e1stroje i \u010das pot\u0159ebn\u00fd na obr\u00e1b\u011bn\u00ed ka\u017ed\u00e9ho d\u00edlu. Pokud projekt vy\u017eaduje p\u0159\u00edsn\u00e9 tolerance a vy\u0161\u0161\u00ed n\u00e1klady jsou p\u0159ijateln\u00e9, m\u016f\u017ee b\u00fdt polotovar vhodnou volbou.<\/p>\n

Dal\u0161\u00edm faktorem je odpad. P\u0159i \u00fab\u011brov\u00e9m obr\u00e1b\u011bn\u00ed se \u010d\u00e1st materi\u00e1lu odstran\u00ed a m\u016f\u017ee vznikat zna\u010dn\u00fd odpad. Zvy\u0161uje celkov\u00e9 n\u00e1klady, proto\u017ee zbytky nemus\u00ed b\u00fdt znovu pou\u017eiteln\u00e9.<\/p>\n

P\u0159i hodnocen\u00ed polotovaru zva\u017ete vysok\u00e9 po\u010d\u00e1te\u010dn\u00ed i pr\u016fb\u011b\u017en\u00e9 n\u00e1klady.<\/p>\n

N\u00e1kladov\u00e1 efektivita odl\u00e9v\u00e1n\u00ed<\/h3>\n

P\u0159i odl\u00e9v\u00e1n\u00ed se tekut\u00fd kov nalije do formy, co\u017e je obvykle cenov\u011b dostupn\u011bj\u0161\u00ed. Tato metoda efektivn\u011b a rychle vyr\u00e1b\u00ed v\u00edce d\u00edl\u016f.<\/p>\n

N\u00e1klady jsou obvykle ni\u017e\u0161\u00ed, proto\u017ee formy lze pou\u017e\u00edvat opakovan\u011b a proces vy\u017eaduje m\u00e9n\u011b pr\u00e1ce. Odl\u00e9v\u00e1n\u00ed nab\u00edz\u00ed v\u00fdbornou hodnotu zejm\u00e9na p\u0159i velk\u00fdch s\u00e9ri\u00edch.<\/p>\n

P\u0159esto nemus\u00ed dosahovat stejn\u00e9 p\u0159esnosti jako polotovar. Pokud projekt p\u0159ipou\u0161t\u00ed ur\u010dit\u00e9 odchylky nebo vy\u017eaduje velk\u00fd po\u010det d\u00edl\u016f, m\u016f\u017ee j\u00edt o lep\u0161\u00ed volbu. Odl\u00e9v\u00e1n\u00ed se hod\u00ed pro projekty citliv\u00e9 na rozpo\u010det.<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n

Jak\u00fd je rozd\u00edl mezi polotovarem, odlitkem a v\u00fdkovkem?<\/h3>\n

Polotovar se obr\u00e1b\u00ed z pln\u00e9ho kusu a nab\u00edz\u00ed vysokou p\u0159esnost a pevnost. Odlitek vznik\u00e1 nalit\u00edm tekut\u00e9ho kovu do formy a umo\u017e\u0148uje slo\u017eit\u00e9 tvary. V\u00fdkovek se tvaruje kov\u00e1n\u00edm nebo lisov\u00e1n\u00edm a vyzna\u010duje se vysokou pevnost\u00ed a odolnost\u00ed.<\/p>\n

Jak si lit\u00fd a polotovarov\u00fd hlin\u00edk vedou z hlediska v\u00fdkonu?<\/h3>\n

Hlin\u00edk z polotovaru je obvykle pevn\u011bj\u0161\u00ed a nab\u00edz\u00ed vy\u0161\u0161\u00ed p\u0159esnost. \u010casto se pou\u017e\u00edv\u00e1 ve v\u00fdkonn\u00fdch aplikac\u00edch, nap\u0159\u00edklad u z\u00e1vodn\u00edch motor\u016f.<\/p>\n

Lit\u00fd hlin\u00edk umo\u017e\u0148uje v\u011bt\u0161\u00ed flexibilitu n\u00e1vrhu a m\u016f\u017ee b\u00fdt vhodn\u011bj\u0161\u00ed pro m\u00e9n\u011b n\u00e1ro\u010dn\u00e9 aplikace ve velk\u00fdch s\u00e9ri\u00edch.<\/p>\n

M\u016f\u017eete vysv\u011btlit rozd\u00edl v n\u00e1kladech na d\u00edly z polotovaru a odlitky?<\/h3>\n

D\u00edly z polotovaru b\u00fdvaj\u00ed dra\u017e\u0161\u00ed kv\u016fli obr\u00e1b\u011bn\u00ed pln\u00e9ho kovu. Odlitky vy\u017eaduj\u00ed m\u00e9n\u011b zpracov\u00e1n\u00ed a mohou b\u00fdt \u00fasporn\u011bj\u0161\u00ed, zejm\u00e9na p\u0159i velk\u00fdch v\u00fdrobn\u00edch s\u00e9ri\u00edch.<\/p>\n

Jak\u00e9 jsou v\u00fdhody a nev\u00fdhody pou\u017eit\u00ed polotovaru oproti odlitku ve v\u00fdrob\u011b?<\/h3>\n

Polotovary nab\u00edzej\u00ed vysokou pevnost a p\u0159esnost, tak\u017ee se hod\u00ed pro v\u00fdkonn\u00e9 d\u00edly. Jejich nev\u00fdhodou m\u016f\u017ee b\u00fdt vy\u0161\u0161\u00ed cena.<\/p>\n

Odl\u00e9v\u00e1n\u00ed umo\u017e\u0148uje slo\u017eit\u00e9 n\u00e1vrhy a ni\u017e\u0161\u00ed n\u00e1klady, nemus\u00ed v\u0161ak dosahovat pevnosti a p\u0159esnosti d\u00edl\u016f z polotovaru.<\/p>\n

Jak se li\u0161\u00ed pevnost polotovaru od pevnosti odlitk\u016f?<\/h3>\n

Polotovary b\u00fdvaj\u00ed obecn\u011b pevn\u011bj\u0161\u00ed, proto\u017ee se obr\u00e1b\u011bj\u00ed z pln\u00e9ho bloku a maj\u00ed jednotnou, hutnou strukturu. Odlitky mohou m\u00edt kv\u016fli procesu odl\u00e9v\u00e1n\u00ed drobn\u00e9 odchylky a slab\u00e1 m\u00edsta.<\/p>\n

Jak si z hlediska \u017eivotnosti vedou polotovary a litina?<\/h3>\n

D\u00edly z polotovaru b\u00fdvaj\u00ed d\u00edky hutn\u00e9 a jednotn\u00e9 struktu\u0159e \u010dasto odoln\u011bj\u0161\u00ed.<\/p>\n

Litina m\u016f\u017ee b\u00fdt tak\u00e9 trvanliv\u00e1, ale kv\u016fli procesu lit\u00ed m\u016f\u017ee obsahovat p\u0159irozen\u00e1 slab\u00e1 m\u00edsta.<\/p>\n

Volba z\u00e1vis\u00ed na konkr\u00e9tn\u00edm pou\u017eit\u00ed a po\u017eadavc\u00edch.<\/p>\n","protected":false},"excerpt":{"rendered":"

Hlin\u00edk obr\u00e1b\u011bn\u00fd z polotovaru a lit\u00fd hlin\u00edk p\u0159edstavuj\u00ed dva odli\u0161n\u00e9 zp\u016fsoby v\u00fdroby vysoce v\u00fdkonn\u00fdch hlin\u00edkov\u00fdch d\u00edl\u016f, nap\u0159\u00edklad blok\u016f motor\u016f, p\u00edst\u016f nebo sou\u010d\u00e1st\u00ed p\u0159evodovek. Hlin\u00edkov\u00fd polotovar se obr\u00e1b\u00ed z jednoho kusu materi\u00e1lu, obvykle slitiny, pomoc\u00ed CNC stroj\u016f. V\u00fdsledn\u00e9 d\u00edly maj\u00ed ve srovn\u00e1n\u00ed s lit\u00fdm hlin\u00edkem vy\u0161\u0161\u00ed pevnost v tahu i mez kluzu. P\u0159i lit\u00ed, nap\u0159\u00edklad do […]<\/p>\n","protected":false},"author":1,"featured_media":25533,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Polotovar vs. odlitek: hlavn\u00ed rozd\u00edly","_seopress_titles_desc":"Zjist\u011bte hlavn\u00ed rozd\u00edly mezi hlin\u00edkem z polotovaru a lit\u00fdm hlin\u00edkem. Prozkoumejte jejich v\u00fdhody a nev\u00fdhody, vyvracejte m\u00fdty a zjist\u011bte, kter\u00fd se hod\u00ed pro v\u00e1\u0161 projekt.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"iawp_total_views":1,"footnotes":""},"categories":[219],"tags":[],"class_list":["post-23489","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/comments?post=23489"}],"version-history":[{"count":1,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23489\/revisions"}],"predecessor-version":[{"id":26108,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23489\/revisions\/26108"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/media\/25533"}],"wp:attachment":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/media?parent=23489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/categories?post=23489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/tags?post=23489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}