{"id":20511,"date":"2026-06-18T10:00:02","date_gmt":"2026-06-18T02:00:02","guid":{"rendered":"https:\/\/www.worldia-tools.com\/?p=20511"},"modified":"2026-06-17T11:49:04","modified_gmt":"2026-06-17T03:49:04","slug":"how-do-polycrystalline-diamond-inserts-compare-with-carbide-inserts-in-tool-life","status":"publish","type":"post","link":"https:\/\/www.worldia-tools.com\/cs\/news-and-media\/how-do-polycrystalline-diamond-inserts-compare-with-carbide-inserts-in-tool-life\/","title":{"rendered":"Jak si polykrystalick\u00e9 diamantov\u00e9 b\u0159itov\u00e9 desti\u010dky vedou v porovn\u00e1n\u00ed s karbidov\u00fdmi b\u0159itov\u00fdmi desti\u010dkami z hlediska \u017eivotnosti n\u00e1stroje?"},"content":{"rendered":"

\"Jak<\/p>\n

Co d\u011bl\u00e1 polykrystalick\u00fd diamant <\/b><\/strong>Vlo\u017eit<\/b><\/strong>s odli\u0161n\u00e9 od karbidu <\/b><\/strong>Vlo\u017eit<\/b><\/strong>S?<\/b><\/strong><\/h2>\n

Slo\u017een\u00ed a materi\u00e1lov\u00e1 struktura<\/b><\/strong><\/h3>\n

Polykrystalick\u00fd diamant <\/b><\/u><\/strong>vlo\u017eit<\/b><\/u><\/strong>s<\/b><\/u><\/strong><\/a>\u00a0poch\u00e1zej\u00ed ze syntetick\u00fdch diamantov\u00fdch \u010d\u00e1stic. Tyto \u010d\u00e1stice se sp\u00e9kaj\u00ed za vysok\u00e9 teploty a tlaku. Tento proces vytv\u00e1\u0159\u00ed pevnou hmotu. Vznik\u00e1 velmi tvrd\u00fd materi\u00e1l. Tento materi\u00e1l nab\u00edz\u00ed silnou odolnost proti opot\u0159eben\u00ed a dobrou tepelnou vodivost. Polykrystalick\u00fd diamant se skl\u00e1d\u00e1 z diamantov\u00fdch \u010d\u00e1stic a substr\u00e1t\u016f ze slinut\u00e9ho karbidu. Jsou slinuty za vysok\u00e9 teploty a vysok\u00e9ho tlaku. To kombinuje odolnost diamantu proti opot\u0159eben\u00ed s pevnost\u00ed slinut\u00e9ho karbidu. Kompozitn\u00ed struktura kombinuje mal\u00e1 diamantov\u00e1 zrna. Tato zrna dod\u00e1vaj\u00ed extr\u00e9mn\u00ed tvrdost. Obsahuje tak\u00e9 kovov\u00e9 pojivo. Toto pojivo dod\u00e1v\u00e1 hou\u017eevnatost.<\/p>\n

Karbidov\u00e9 b\u0159itov\u00e9 desti\u010dky se obvykle skl\u00e1daj\u00ed z \u010d\u00e1stic karbidu wolframu. Tyto \u010d\u00e1stice se v\u00e1\u017eou s kobaltem. Sm\u011bs poskytuje dobrou hou\u017eevnatost a slu\u0161nou tvrdost. P\u0159esto se nedosahuje odolnosti proti opot\u0159eben\u00ed jako PCD. Slinut\u00fd karbid se tvo\u0159\u00ed pr\u00e1\u0161kovou metalurgi\u00ed. Vyu\u017e\u00edv\u00e1 tvrd\u00e9 slou\u010deniny \u017e\u00e1ruvzdorn\u00fdch kov\u016f a pojiva. Slinut\u00fd karbid vykazuje vysokou tvrdost, odolnost proti opot\u0159eben\u00ed, pevnost, hou\u017eevnatost, tepelnou odolnost a odolnost proti korozi.<\/p>\n

Jasn\u00fd rozd\u00edl v mikrostruktu\u0159e ovliv\u0148uje chov\u00e1n\u00ed jednotliv\u00fdch materi\u00e1l\u016f b\u011bhem obr\u00e1b\u011bn\u00ed. N\u00e1stroje z karbidu wolframu dob\u0159e zvl\u00e1daj\u00ed t\u011b\u017ek\u00e9 zat\u00ed\u017een\u00ed. N\u00e1stroje z PCD dosahuj\u00ed nejlep\u0161\u00edch v\u00fdsledk\u016f v p\u0159esn\u00e9 pr\u00e1ci. Zaji\u0161\u0165uj\u00ed jemnou povrchovou \u00fapravu a p\u0159esn\u00e9 rozm\u011bry.<\/p>\n

\"Kl\u00ed\u010dov\u00e9<\/p>\n

Jak vlastnosti materi\u00e1lu ovliv\u0148uj\u00ed \u00fa\u010dinnost \u0159ez\u00e1n\u00ed<\/b><\/strong><\/h3>\n

PCD poskytuje druhou tvrdost hned po monokrystalick\u00e9m diamantu. Zachov\u00e1v\u00e1 ostr\u00e9 hrany b\u011bhem \u0159ez\u00e1n\u00ed abrazivn\u00edch materi\u00e1l\u016f. Mezi tyto materi\u00e1ly pat\u0159\u00ed slitiny hlin\u00edku a k\u0159em\u00edku a kompozity s uhl\u00edkov\u00fdmi vl\u00e1kny. Tvrdost zp\u016fsobuje velmi mal\u00e9 opot\u0159eben\u00ed n\u00e1stroje. V\u00fdkon z\u016fst\u00e1v\u00e1 konzistentn\u00ed i po dlouh\u00fdch s\u00e9ri\u00edch.<\/p>\n

Karbidov\u00e9 b\u0159itov\u00e9 desti\u010dky nejsou tak tvrd\u00e9 jako PCD. Vykazuj\u00ed naopak lep\u0161\u00ed lomovou hou\u017eevnatost. D\u00edky tomu jsou vhodn\u00e9 pro p\u0159eru\u0161ovan\u00e9 \u0159ezy nebo pr\u00e1ce s prom\u011bnliv\u00fdm zat\u00ed\u017een\u00edm. Absorbuj\u00ed r\u00e1zy bez vylamov\u00e1n\u00ed a dob\u0159e se hod\u00ed pro hrubov\u00e1n\u00ed \u017eelezn\u00fdch materi\u00e1l\u016f.<\/p>\n

Tepeln\u00e1 vodivost je tak\u00e9 d\u016fle\u017eit\u00e1 pro \u00fa\u010dinnost \u0159ez\u00e1n\u00ed. PCD rychle odv\u00e1d\u00ed teplo z \u0159ezn\u00e9 z\u00f3ny. T\u00edm se sni\u017euje tepeln\u00e1 deformace a prodlu\u017euje \u017eivotnost n\u00e1stroje. Karbidov\u00e9 n\u00e1stroje vedou teplo m\u00e9n\u011b efektivn\u011b. Teplota b\u0159it\u016f se m\u016f\u017ee b\u011bhem dlouh\u00fdch operac\u00ed zvy\u0161ovat.<\/p>\n

Jak se porovn\u00e1v\u00e1 \u017eivotnost n\u00e1stroje mezi PCD a karbidem <\/b><\/strong>Vlo\u017eit<\/b><\/strong>S?<\/b><\/strong><\/h2>\n

Faktory ovliv\u0148uj\u00edc\u00ed \u017eivotnost n\u00e1stroje<\/b><\/strong><\/h3>\n

\u017divotnost n\u00e1stroje z\u00e1vis\u00ed na materi\u00e1lu obrobku, \u0159ezn\u00e9 rychlosti, rychlosti posuvu a chlazen\u00ed. N\u00e1stroje z PCD z\u016fst\u00e1vaj\u00ed d\u00e9le ostr\u00e9 na ne\u017eelezn\u00fdch kovech nebo kompozitech. S t\u011bmito materi\u00e1ly vykazuj\u00ed jen malou chemickou reakci. Karbidov\u00e9 n\u00e1stroje se mohou v abrazivn\u00edch podm\u00ednk\u00e1ch opot\u0159ebov\u00e1vat rychleji. Na oceli dob\u0159e odol\u00e1vaj\u00ed, proto\u017ee odol\u00e1vaj\u00ed difuzn\u00edmu opot\u0159eben\u00ed.<\/p>\n

N\u00e1stroje z PCD vykazuj\u00ed vynikaj\u00edc\u00ed tvrdost. Zaji\u0161\u0165uj\u00ed tak\u00e9 siln\u00fd p\u0159enos tepla. T\u0159en\u00ed b\u011bhem pr\u00e1ce z\u016fst\u00e1v\u00e1 n\u00edzk\u00e9. Tepeln\u00e1 rozta\u017enost z\u016fst\u00e1v\u00e1 minim\u00e1ln\u00ed. Chemick\u00e1 stabilita je dobr\u00e1 i u ne\u017eelezn\u00fdch kov\u016f a nekovov\u00fdch materi\u00e1l\u016f. D\u00edky t\u011bmto vlastnostem vydr\u017e\u00ed n\u00e1stroje z PCD d\u00e9le ne\u017e standardn\u00ed b\u0159itov\u00e9 desti\u010dky z karbidu wolframu.<\/p>\n

Kdy PCD p\u0159ekon\u00e1v\u00e1 karbid v trvanlivosti?<\/b><\/strong><\/h3>\n

P\u0159i kontinu\u00e1ln\u00edm obr\u00e1b\u011bn\u00ed hlin\u00edkov\u00fdch blok\u016f motor\u016f nebo m\u011bd\u011bn\u00fdch d\u00edl\u016f m\u016f\u017ee PCD vydr\u017eet 10 a\u017e 100kr\u00e1t d\u00e9le ne\u017e karbid. Vynik\u00e1 svou odolnost\u00ed proti od\u011bru. Ni\u017e\u0161\u00ed t\u0159en\u00ed v kontaktn\u00edm m\u00edst\u011b udr\u017euje n\u00edzk\u00e9 teploty. Opot\u0159eben\u00ed hran z\u016fst\u00e1v\u00e1 minim\u00e1ln\u00ed i p\u0159i vy\u0161\u0161\u00edch rychlostech.<\/p>\n

Odv\u011btv\u00ed, kter\u00e1 vy\u017eaduj\u00ed p\u0159esn\u00e9 tolerance v dlouh\u00fdch s\u00e9ri\u00edch, jako je leteck\u00fd nebo automobilov\u00fd pr\u016fmysl, t\u011b\u017e\u00ed z PCD b\u0159itov\u00fdch desti\u010dek. Rozm\u011bry z\u016fst\u00e1vaj\u00ed konzistentn\u00ed i v r\u00e1mci dlouh\u00e9 v\u00fdroby bez \u010dast\u00e9 v\u00fdm\u011bny n\u00e1stroj\u016f.<\/p>\n

Spole\u010dnost Worldia nab\u00edz\u00ed r\u016fzn\u00e9 t\u0159\u00eddy PCD. Tyto t\u0159\u00eddy jsou vhodn\u00e9 pro dokon\u010dovac\u00ed pr\u00e1ce s ne\u017eelezn\u00fdmi kovy. Jsou vhodn\u00e9 pro pr\u00e1ci se d\u0159evem, MDF, MMC, k\u0159em\u00edkem, hlin\u00edkov\u00fdmi slitinami, karbidem, tvrdou pry\u017e\u00ed a grafitem. N\u00e1stroje si zachov\u00e1vaj\u00ed vysok\u00fd v\u00fdkon v mnoha v\u00fdrobn\u00edch prost\u0159ed\u00edch.<\/p>\n

\"Kl\u00ed\u010dov\u00e9<\/p>\n

Kde se nach\u00e1zej\u00ed polykrystalick\u00e9 diamanty <\/b><\/strong>Vlo\u017eit<\/b><\/strong>Nej\u00fa\u010dinn\u011bj\u0161\u00ed?<\/b><\/strong><\/h2>\n

Aplikace v r\u016fzn\u00fdch odv\u011btv\u00edch<\/b><\/strong><\/h3>\n

PCD b\u0159itov\u00e9 desti\u010dky se \u0161iroce pou\u017e\u00edvaj\u00ed v oblastech, kter\u00e9 vy\u017eaduj\u00ed p\u0159esn\u00e9 obr\u00e1b\u011bn\u00ed a dlouhou \u017eivotnost n\u00e1stroje.<\/p>\n