Oxid hlinit\u00fd a karbid k\u0159em\u00edku jsou dva obl\u00edben\u00e9 brusn\u00e9 materi\u00e1ly pou\u017e\u00edvan\u00e9 na kovov\u00e9 a d\u0159ev\u011bn\u00e9 v\u00fdrobky. V\u00fdb\u011br ide\u00e1ln\u00edho materi\u00e1lu z\u00e1vis\u00ed na pot\u0159eb\u00e1ch aplikace a po\u017eadovan\u00e9m typu povrchov\u00e9 \u00fapravy.<\/p>\n
Karbid k\u0159em\u00edku se m\u016f\u017ee pochlubit zrny ostr\u00fdmi jako b\u0159itva, kter\u00e1 bez n\u00e1mahy pro\u0159ez\u00e1vaj\u00ed tvrd\u00e9 kovy, d\u0159evo a sklen\u011bn\u00e9 povrchy s vynalo\u017een\u00edm minim\u00e1ln\u00ed s\u00edly a jsou vhodn\u00e1 i pro nekovov\u00e9 materi\u00e1ly nebo materi\u00e1ly s n\u00edzkou pevnost\u00ed v tahu.<\/p>\n
Oxid hlinit\u00fd je jedn\u00edm z nejvyhled\u00e1van\u011bj\u0161\u00edch brusiv, kter\u00e9 je zn\u00e1m\u00e9 svou dlouhou \u017eivotnost\u00ed a univerz\u00e1lnost\u00ed v cel\u00e9 \u0159ad\u011b materi\u00e1l\u016f. Vynik\u00e1 rychl\u00fdm odstra\u0148ov\u00e1n\u00edm bez po\u0161kozen\u00ed povrchu - ide\u00e1ln\u00ed volba, kdy\u017e jde o \u010das.<\/p>\n
Toto brusn\u00e9 zrno se \u010dasto vol\u00ed p\u0159i v\u00fdrob\u011b r\u016fzn\u00fdch v\u00fdrobk\u016f, jako jsou tryskac\u00ed prost\u0159edky, brusn\u00e9 kotou\u010de a brusn\u00e9 pap\u00edry. Toto zrno je k dispozici v r\u016fzn\u00fdch zrnitostech v rozmez\u00ed 40-400 a pro snadnou distribuci je lze rozd\u011blit mechanicky nebo elektrostaticky.<\/p>\n
Karbid k\u0159em\u00edku je extr\u00e9mn\u011b tvrd\u00e9, ostr\u00e9 brusn\u00e9 zrno vyr\u00e1b\u011bn\u00e9 karbotermickou redukc\u00ed. Na Mohsov\u011b stupnici tvrdosti m\u00e1 hodnotu 9,5 - je tvrd\u0161\u00ed ne\u017e diamant i karbid boru, ale p\u0159i velk\u00e9m zat\u00ed\u017een\u00ed se snadno rozpad\u00e1.<\/p>\n
Skl\u00e1\u0159sk\u00fd pr\u016fmysl, keramick\u00fd pr\u016fmysl a pr\u016fmysl v\u00fdkonov\u00e9 elektroniky se ve velk\u00e9 m\u00ed\u0159e spol\u00e9haj\u00ed na mlet\u00fd karbid k\u0159em\u00edku jako na p\u0159\u00edsadu pro brou\u0161en\u00ed, zat\u00edmco jeho tepeln\u00e9 vlastnosti ho \u010din\u00ed neoceniteln\u00fdm z hlediska izola\u010dn\u00edch vlastnost\u00ed. \u017d\u00e1ruvzdorn\u00e9 materi\u00e1ly obsahuj\u00edc\u00ed mlet\u00fd karbid k\u0159em\u00edku maj\u00ed tepeln\u011b izola\u010dn\u00ed vlastnosti, d\u00edky nim\u017e jsou vhodn\u00e9 pro izolaci substr\u00e1t\u016f a sou\u010d\u00e1st\u00ed p\u0159ed p\u0159enosem tepla, zat\u00edmco se \u010dasto m\u00eds\u00ed s jin\u00fdmi brusn\u00fdmi zrny k v\u00fdrob\u011b brusn\u00fdch kotou\u010d\u016f a brusn\u00fdch pap\u00edr\u016f - a v n\u011bkter\u00fdch aplikac\u00edch dokonce i n\u00e1stroj\u016f na m\u00edru, speci\u00e1ln\u011b p\u0159izp\u016fsoben\u00fdch pro konkr\u00e9tn\u00ed \u00fakoly!<\/p>\n
Brusn\u00fd pr\u00e1\u0161ek z oxidu hlinit\u00e9ho je ekonomick\u00e9 brusivo s dlouhou \u017eivotnost\u00ed, kter\u00e9 m\u00e1 v\u0161estrann\u00e9 vyu\u017eit\u00ed, tak\u017ee je ide\u00e1ln\u00edm \u0159e\u0161en\u00edm pro provozy s omezen\u00fdm rozpo\u010dtem, kter\u00e9 pot\u0159ebuj\u00ed ekonomick\u00e9 brusivo, je\u017e m\u00e1 i po opakovan\u00e9m pou\u017eit\u00ed st\u00e1le dobrou v\u00fdkonnost.<\/p>\n
Karbid k\u0159em\u00edku je mnohem tvrd\u0161\u00ed a ost\u0159ej\u0161\u00ed ne\u017e oxid hlinit\u00fd, tak\u017ee je vhodn\u00fd pro materi\u00e1ly s ni\u017e\u0161\u00ed pevnost\u00ed v tahu nebo nekovov\u00e9 p\u0159edm\u011bty, jako je sklo nebo plast, d\u0159evovl\u00e1knit\u00e9 desky st\u0159edn\u00ed hustoty nebo d\u0159evovl\u00e1knit\u00e9 desky st\u0159edn\u00ed hustoty. Bohu\u017eel by se v\u0161ak tento materi\u00e1l nem\u011bl pou\u017e\u00edvat na kovy nebo velmi tvrd\u00e9 d\u0159evo kv\u016fli jejich tvrd\u00e9mu povrchu.<\/p>\n
Taven\u00fd oxid hlinit\u00fd s vysok\u00fdm obsahem chromu je dal\u0161\u00edm hojn\u011b pou\u017e\u00edvan\u00fdm brusn\u00fdm materi\u00e1lem, kter\u00fd nab\u00edz\u00ed hladk\u00fd povrch, ani\u017e by vytv\u00e1\u0159el nadm\u011brn\u00e9 teplo nebo t\u0159en\u00ed. Zat\u00edmco hlin\u00edkov\u00e9 povrchy mohou t\u011b\u017eit z pou\u017eit\u00ed samotn\u00e9ho tohoto brusiva, n\u011bkte\u0159\u00ed profesion\u00e1lov\u00e9 se pro dosa\u017een\u00ed nejlep\u0161\u00edch v\u00fdsledk\u016f rozhodnou p\u0159i brou\u0161en\u00ed st\u0159\u00eddat b\u00edl\u00fd oxid hlinit\u00fd a taven\u00fd oxid hlinit\u00fd.<\/p>\n
Chcete-li rychle zjistit, jak\u00fd typ brusn\u00e9ho materi\u00e1lu brusn\u00fd pap\u00edr obsahuje, pod\u00edvejte se na prvn\u00ed p\u00edsmenn\u00fd k\u00f3d na \u0161t\u00edtku: oxid hlinit\u00fd je ozna\u010den p\u00edsmenem A, zat\u00edmco karbid k\u0159em\u00edku p\u00edsmenem C. Zbytek tohoto k\u00f3du poskytuje dal\u0161\u00ed podrobnosti t\u00fdkaj\u00edc\u00ed se zrnitosti a dal\u0161\u00edch specifick\u00fdch vlastnost\u00ed pou\u017eit\u00e9ho materi\u00e1lu; tyto informace m\u016f\u017eete z\u00edskat tak\u00e9 online - nap\u0159\u00edklad u v\u00fdrobk\u016f s tryskac\u00edmi m\u00e9dii jsou tyto informace uvedeny zde.<\/p>\n
Abrazivn\u00ed zrna z oxidu hlinit\u00e9ho a karbidu k\u0159em\u00edku lze pou\u017e\u00edt pro r\u016fzn\u00e9 aplikace trysk\u00e1n\u00ed, v\u010detn\u011b lept\u00e1n\u00ed, odstra\u0148ov\u00e1n\u00ed n\u00e1t\u011br\u016f, povrchov\u00e9 \u00fapravy, spojov\u00e1n\u00ed kovu s keramikou a le\u0161t\u011bn\u00ed. Karbid k\u0159em\u00edku je obvykle tvrd\u0161\u00ed a ost\u0159ej\u0161\u00ed ne\u017e oxid hlinit\u00fd; oba typy lze pou\u017e\u00edt pro such\u00e9 i mokr\u00e9 trysk\u00e1n\u00ed a pro nekovov\u00e9 materi\u00e1ly nebo materi\u00e1ly s n\u00edzkou pevnost\u00ed v tahu.<\/p>\n
Brusn\u00e1 zrna oxidu hlinit\u00e9ho a karbidu k\u0159em\u00edku se skl\u00e1daj\u00ed z krystal\u016f. Oxid hlinit\u00fd se skl\u00e1d\u00e1 z atom\u016f kysl\u00edku a hlin\u00edku, zat\u00edmco karbid k\u0159em\u00edku obsahuje atomy uhl\u00edku a k\u0159em\u00edku. Oba typy lze z\u00edskat z p\u0159\u00edrody pro pou\u017eit\u00ed jako brusivo, ale tov\u00e1rn\u00ed v\u00fdroba obvykle zaji\u0161\u0165uje lep\u0161\u00ed v\u00fdsledky.<\/p>\n
\u010cern\u00fd karbid k\u0159em\u00edku (SiC) je \u0161iroce vyu\u017e\u00edv\u00e1n v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch v\u010detn\u011b v\u00fdroby brusn\u00fdch kotou\u010d\u016f, kal\u016f a \u017e\u00e1ruvzdorn\u00fdch materi\u00e1l\u016f. SiC vynik\u00e1 t\u00edm, \u017ee se p\u0159i pou\u017eit\u00ed m\u016f\u017ee rozpadat na ostr\u00e9 \u010d\u00e1stice, tak\u017ee jej lze opakovan\u011b pou\u017e\u00edvat podobn\u011b jako kamenn\u00e9 bubny.<\/p>\n
SiC m\u016f\u017ee m\u00edt tak\u00e9 podobu rub\u00edn\u016f a saf\u00edr\u016f, jejich\u017e jedine\u010dn\u00e9 barvy jsou v\u00fdsledkem drobn\u00fdch ne\u010distot v jejich slo\u017een\u00ed. Prod\u00e1vaj\u00ed se sklovit\u011b v\u00e1zan\u00e9 jako nekontaminuj\u00edc\u00ed montovan\u00e9 kameny pro p\u0159\u00edpravu kovokeramick\u00fdch slitin pro aplikace spojov\u00e1n\u00ed porcel\u00e1nu a tak\u00e9 k odstra\u0148ov\u00e1n\u00ed zbytk\u016f z litinov\u00fdch povrch\u016f pro vytv\u00e1\u0159en\u00ed hladk\u00fdch povrchov\u00fdch \u00faprav.<\/p>\n
Brusiva z karbidu k\u0159em\u00edku a oxidu hlinit\u00e9ho se \u0161iroce pou\u017e\u00edvaj\u00ed k brou\u0161en\u00ed, brou\u0161en\u00ed a le\u0161t\u011bn\u00ed r\u016fzn\u00fdch materi\u00e1l\u016f v\u010detn\u011b kov\u016f. Na to, kter\u00e9 brusivo se nejl\u00e9pe hod\u00ed pro danou aplikaci, m\u00e1 vliv mnoho faktor\u016f, nap\u0159\u00edklad tvrdost, trvanlivost, kompatibilita s materi\u00e1lem nebo vlastnosti tvrdosti\/trvanlivosti - znalost t\u011bchto rozd\u00edl\u016f je z\u00e1sadn\u00ed pro optimalizaci v\u00fdb\u011bru a v\u00fdkonu jak\u00e9hokoli brusiva.<\/p>\n
Oxid hlinit\u00fd se dod\u00e1v\u00e1 v r\u016fzn\u00fdch zrnitostech od hrub\u00e9 a\u017e po jemnou strukturu a ve srovn\u00e1n\u00ed s jin\u00fdmi brusivy m\u00e1 pom\u011brn\u011b dlouhou \u017eivotnost. Krom\u011b toho je jeho produkce tepla obecn\u011b sn\u00ed\u017eena, tak\u017ee je vhodn\u00fd pro pou\u017eit\u00ed na d\u0159evo a laky, stejn\u011b jako na nekontaminuj\u00edc\u00ed titan, kter\u00fd se b\u011b\u017en\u011b vyskytuje v leteck\u00fdch aplikac\u00edch.<\/p>\n
Karbid k\u0159em\u00edku je tvrd\u0161\u00ed a odoln\u011bj\u0161\u00ed ne\u017e oxid hlinit\u00fd, tak\u017ee je vhodn\u00fd pro \u0159ez\u00e1n\u00ed a brou\u0161en\u00ed. Krom\u011b toho je d\u00edky sv\u00e9 tepeln\u00e9 vodivosti a chemick\u00e9 stabilit\u011b vhodn\u00fd pro aplikace citliv\u00e9 na teplo.<\/p>\n
Ob\u011b brusiva jsou schopna pracovat s v\u011bt\u0161inou materi\u00e1l\u016f, a\u010dkoli n\u011bkter\u00e9 podklady reaguj\u00ed na ur\u010dit\u00e1 brusiva p\u0159\u00edzniv\u011bji ne\u017e jin\u00e9. Karbid k\u0159em\u00edku m\u00e1 tendenci pracovat nejl\u00e9pe na kovech, zat\u00edmco oxid hlinit\u00fd m\u00e1 tendenci pracovat nejl\u00e9pe na d\u0159ev\u011b. Karbid k\u0159em\u00edku m\u00e1 lep\u0161\u00ed tepelnou odolnost pro pou\u017eit\u00ed p\u0159i brou\u0161en\u00ed pod vy\u0161\u0161\u00edm tlakem a z\u00e1rove\u0148 poskytuje lep\u0161\u00ed kvalitu povrchov\u00e9 \u00fapravy; oxid hlinit\u00fd v\u0161ak obvykle poskytuje ni\u017e\u0161\u00ed n\u00e1klady p\u0159i podobn\u00e9 povrchov\u00e9 \u00faprav\u011b ne\u017e karbid k\u0159em\u00edku.<\/p>","protected":false},"excerpt":{"rendered":"
Aluminum oxide and silicon carbide are two popular abrasive materials used on metal and wood products. Selecting the ideal material […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[3],"tags":[],"class_list":["post-94","post","type-post","status-publish","format-standard","hentry","category-sic-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/comments?post=94"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/94\/revisions"}],"predecessor-version":[{"id":95,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/94\/revisions\/95"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/media?parent=94"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/categories?post=94"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/tags?post=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}