Oxid hlinit\u00fd je ide\u00e1lny materi\u00e1l na br\u00fasenie kovov a dreva s vy\u0161\u0161ou pevnos\u0165ou v \u0165ahu, ako aj na br\u00fasenie niektor\u00fdch tvrd\u00fdch ocel\u00ed, ktor\u00e9 obsahuj\u00fa tvrd\u00e9 karbidy, ako je chr\u00f3m, van\u00e1d alebo volfr\u00e1m.<\/p>\n
Karbid krem\u00edka sa m\u00f4\u017ee pochv\u00e1li\u0165 zrnami ostr\u00fdmi ako britva, ktor\u00e9 rezaj\u00fa sklo, plast a kov s minim\u00e1lnym tlakom, ale opotreb\u00favaj\u00fa sa r\u00fdchlej\u0161ie ako oxid hlinit\u00fd. Bohu\u017eia\u013e, jeho ostr\u00e9 hrany sa tie\u017e r\u00fdchlo opotreb\u00favaj\u00fa.<\/p>\n
Oxid hlinit\u00fd je jedn\u00fdm z najtvrd\u0161\u00edch a najdlh\u0161ie odol\u00e1vaj\u00facich br\u00fasnych materi\u00e1lov na trhu, ktor\u00fd sa m\u00f4\u017ee pochv\u00e1li\u0165 tvrdos\u0165ou 9 pod\u013ea Mohsovej stupnice a nekontaminuje sa pri pou\u017eit\u00ed na sklenen\u00fdch, plastov\u00fdch a gumov\u00fdch povrchoch. Oxid hlinit\u00fd, ktor\u00fd je k dispoz\u00edcii v zrnitostiach od 16 do 600 na optim\u00e1lne pou\u017eitie na t\u00fdchto podkladoch, pon\u00faka dlh\u0161iu \u017eivotnos\u0165 ako karbid krem\u00edka, ktor\u00fd m\u00e1 tvrd\u0161iu a ostrej\u0161iu \u0161trukt\u00faru z\u0155n, ktor\u00e1 sa r\u00fdchlej\u0161ie opotreb\u00fava.<\/p>\n
Br\u00fasne zrno oxidu hlinit\u00e9ho dobre funguje na kovov\u00fdch, dreven\u00fdch a lakovan\u00fdch povrchoch; od hrub\u00fdch a\u017e po mikrogritov\u00e9 v\u00fdrobky. K dispoz\u00edcii od hrubej a\u017e po mikrozrnitos\u0165 a s r\u00f4znymi pripevnen\u00fdmi podlo\u017ekami. Hned\u00e9 zrno oxidu hlinit\u00e9ho sa \u0161iroko pou\u017e\u00edva v\u010faka svojim polodrobiv\u00fdm vlastnostiam, ktor\u00e9 funguj\u00fa na m\u00e4kk\u00fdch kovoch, ako je mosadz, aj na dreven\u00fdch povrchoch; cenovo dostupnej\u0161ie ako alternat\u00edvy z karbidu krem\u00edka.<\/p>\n
Biele a ru\u017eov\u00e9 zrn\u00e1 br\u00fasnych materi\u00e1lov z oxidu hlinit\u00e9ho maj\u00fa zvy\u010dajne krat\u0161iu \u017eivotnos\u0165 ako ich hned\u00e9 n\u00e1protivky; funguj\u00fa v\u0161ak ove\u013ea lep\u0161ie pri procesoch zah\u0155\u0148aj\u00facich laky alebo hol\u00e9 kovy, preto\u017ee produkuj\u00fa menej tepla, \u010do umo\u017e\u0148uje \u00fa\u010dinnej\u0161ie rezanie m\u00e4kk\u00fdch materi\u00e1lov a z\u00e1rove\u0148 zni\u017euje riziko po\u0161kodenia opracov\u00e1van\u00fdch povrchov teplom.<\/p>\n
Br\u00fasne materi\u00e1ly z oxidu hlinit\u00e9ho s\u00fa vo v\u0161eobecnosti lep\u0161ou vo\u013ebou pri pr\u00e1ci na povrchoch z nehrdzavej\u00facej ocele v\u010faka svojej odolnosti vo\u010di tvorbe gumy a r\u00fdchlej r\u00fdchlosti \u00faberu materi\u00e1lu. Karbid krem\u00edka si m\u00f4\u017ee vy\u017eadova\u0165 agres\u00edvnej\u0161ie br\u00fasne procesy, ktor\u00e9 m\u00f4\u017eu sp\u00f4sobi\u0165 prehriatie a po\u0161kodenie opracov\u00e1van\u00e9ho substr\u00e1tu, \u010do s\u0165a\u017euje jeho pou\u017eitie.<\/p>\n
Br\u00fasivo z oxidu hlinit\u00e9ho je spo\u013eahlivej\u0161ie a odolnej\u0161ie ako karbid krem\u00edka, tak\u017ee si zachov\u00e1va rezn\u00e9 hrany dlh\u0161\u00ed \u010das. To pom\u00e1ha minimalizova\u0165 mno\u017estvo opakovan\u00fdch pr\u00e1c pri br\u00fasen\u00ed tvrd\u00fdch materi\u00e1lov, ako je kov a kame\u0148. Na druhej strane karbid krem\u00edka m\u00e1 krehkej\u0161ie zrn\u00e1, ktor\u00e9 sa pri kontakte s \u0165a\u017ek\u00fdmi l\u00e1tkami r\u00fdchlej\u0161ie rozpadaj\u00fa, \u010do m\u00e1 za n\u00e1sledok menej presn\u00e9 br\u00fasenie a pomal\u0161ie odstra\u0148ovanie materi\u00e1lu.<\/p>\n
Trvanlivos\u0165 karbidu krem\u00edka mo\u017eno ur\u010di\u0165 aj pod\u013ea jeho chemickej stability a elektrick\u00fdch vlastnost\u00ed, na rozdiel od oxidu hlinit\u00e9ho, ktor\u00fd ve\u013emi \u00fa\u010dinne vedie elektrick\u00fd pr\u00fad a je odoln\u00fd vo\u010di kor\u00f3zii. Kv\u00f4li t\u00fdmto obmedzeniam sa karbid krem\u00edka m\u00f4\u017ee uk\u00e1za\u0165 ako n\u00e1ro\u010dn\u00fd pri pr\u00e1ci s ur\u010dit\u00fdmi materi\u00e1lmi pomocou elektrick\u00fdch br\u00fasnych strojov.<\/p>\n
Oxid hlinit\u00fd sa vyzna\u010duje vynikaj\u00facou kvalitou a trvanlivos\u0165ou povrchovej \u00fapravy, ako aj vynikaj\u00facou tepelnou odolnos\u0165ou, v\u010faka \u010domu je vynikaj\u00facou vo\u013ebou br\u00fasiva pre mnoh\u00e9 drev\u00e1rske aplik\u00e1cie, ako je hrub\u00e9 br\u00fasenie alebo br\u00fasenie medzi jednotliv\u00fdmi vrstvami povrchovej \u00fapravy.<\/p>\n
Na druhej strane, br\u00fasne listy z karbidu krem\u00edka s\u00fa vhodnej\u0161ie na dokon\u010dovacie \u00falohy ako na hrub\u00e9 br\u00fasenie v\u010faka svojim ostrej\u0161\u00edm, agres\u00edvnej\u0161\u00edm abraz\u00edvnym vlastnostiam a schopnosti prereza\u0165 materi\u00e1ly s vysokou pevnos\u0165ou v \u0165ahu. Karbid krem\u00edka sa m\u00f4\u017ee pou\u017e\u00edva\u0165 aj na mokr\u00e9 br\u00fasenie, napr\u00edklad na le\u0161tenie kamenn\u00fdch a mramorov\u00fdch povrchov a odstra\u0148ovanie hrdze z kovov\u00fdch s\u00fa\u010diastok alebo na renov\u00e1ciu dreven\u00fdch podl\u00e1h s hrub\u0161ou zrnitos\u0165ou.<\/p>\n
Oxid hlinit\u00fd je zn\u00e1my svojou odolnos\u0165ou a schopnos\u0165ou odol\u00e1va\u0165 tepelnej degrad\u00e1cii v\u010faka svojej vynikaj\u00facej tepelnej vodivosti a chemickej stabilite, v\u010faka \u010domu je ide\u00e1lny na tryskanie abraz\u00edvnych materi\u00e1lov, ako je napr\u00edklad \u017eula. V\u010faka svojej odolnosti m\u00f4\u017ee prejs\u0165 nieko\u013eko otrysk\u00e1vac\u00edch cyklov, k\u00fdm bude potrebn\u00e1 v\u00fdmena, \u010do pom\u00e1ha \u0161etri\u0165 n\u00e1klady aj prestoje.<\/p>\n
Na druhej strane karbid krem\u00edka je krehkej\u0161\u00ed a \u010dasom sa r\u00fdchlej\u0161ie opotreb\u00fava, \u010do vedie k menej konzistentn\u00e9mu v\u00fdkonu ako br\u00fasne materi\u00e1ly z oxidu hlinit\u00e9ho. Zatia\u013e \u010do jeho zrn\u00e1 ostr\u00e9 ako britva m\u00f4\u017eu fungova\u0165 pri rezan\u00ed skla, plastov, drevovl\u00e1knit\u00fdch dosiek strednej hustoty pri pou\u017eit\u00ed s mal\u00fdm tlakom, maj\u00fa probl\u00e9my s tvrd\u0161\u00edmi kovmi alebo drevom, ktor\u00e9 si vy\u017eaduj\u00fa v\u00e4\u010d\u0161\u00ed tlak na br\u00fasenie.<\/p>\n
Oxid hlinit\u00fd a karbid krem\u00edka dobre funguj\u00fa na oceli, pri\u010dom oxid hlinit\u00fd lep\u0161ie zvl\u00e1da teplo vznikaj\u00face po\u010das le\u0161tenia - preto je vhodnej\u0161\u00ed na opracovanie tvrd\u0161\u00edch materi\u00e1lov, ako je nehrdzavej\u00faca oce\u013e alebo tit\u00e1n.<\/p>\n
Oxid hlinit\u00fd je v boji proti hrdzi \u00fa\u010dinnej\u0161\u00ed ako karbid krem\u00edka, preto\u017ee karbid krem\u00edka m\u00e1 tendenciu zanech\u00e1va\u0165 zvy\u0161ky \u017eeleza a chr\u00f3mu, ktor\u00e9 s\u0165a\u017euj\u00fa odstra\u0148ovanie hrdze; na druhej strane oxid hlinit\u00fd je nekontaminuj\u00faci a \u013eahko odstra\u0148uje hrdzu bez po\u0161kodenia podkladov\u00fdch materi\u00e1lov.<\/p>\n
Br\u00fasne materi\u00e1ly z karbidu krem\u00edka a oxidu hlinit\u00e9ho sa v\u00fdrazne l\u00ed\u0161ia, pokia\u013e ide o pou\u017eitie na ur\u010dit\u00e9 \u00falohy; ka\u017ed\u00fd z nich je vhodnej\u0161\u00ed na ur\u010dit\u00e9 \u00falohy ako druh\u00fd. Karbid krem\u00edka pon\u00faka tvrd\u00fd a dlhotrvaj\u00faci v\u00fdkon, zatia\u013e \u010do oxid hlinit\u00fd pon\u00faka menej komplexn\u00e9 rie\u0161enia vhodn\u00e9 pre jemnej\u0161ie aplik\u00e1cie alebo aplik\u00e1cie s n\u00edzkou pevnos\u0165ou v \u0165ahu.<\/p>\n
Oxid hlinit\u00fd sa \u010dasto vyber\u00e1 na keramick\u00e9 pr\u00e1ce v\u010faka svojej \u00fa\u010dinnosti pri povrchovej \u00faprave a le\u0161ten\u00ed, preto\u017ee vytv\u00e1ra rovnomern\u00fd povrch so svojimi okr\u00fahlymi \u010dasticami, \u010do zvy\u0161uje estetick\u00fd vzh\u013ead. Okrem toho sa tento jemn\u00fd materi\u00e1l v\u00fdborne hod\u00ed aj ako br\u00fasivo na sklenen\u00e9 a kovov\u00e9 diely, preto\u017ee ich \u010dasom nepo\u0161kod\u00ed.<\/p>\n
Na druhej strane karbid krem\u00edka je e\u0161te ostrej\u0161\u00ed a tvrd\u0161\u00ed materi\u00e1l ako oxid hlinit\u00fd. Jeho zrn\u00e1 ostr\u00e9 ako britva bez n\u00e1mahy a s \u013eahk\u00fdm tlakom rozre\u017e\u00fa sklo, plast a drevovl\u00e1knit\u00e9 dosky strednej hustoty, ale nedok\u00e1\u017eu tak \u013eahko rozreza\u0165 tvrd\u00e9 drevo alebo kovy. Kv\u00f4li svojmu \u00fazkemu tvaru a krehkej povahe si aj br\u00fasivo z karbidu krem\u00edka \u010dasto vy\u017eaduje v\u00fdmenu po krat\u0161\u00edch cykloch otrysk\u00e1vania alebo pri br\u00fasen\u00ed n\u00e1ro\u010dnej\u0161\u00edch materi\u00e1lov.<\/p>\n
Karbid krem\u00edka a oxid hlinit\u00fd s\u00fa vhodn\u00e9 na obrobky z nehrdzavej\u00facej ocele, hoci karbid krem\u00edka m\u00e1 v\u00fdhodu oproti zliatin\u00e1m odolnej\u0161\u00edm vo\u010di opotrebovaniu, ktor\u00e9 obsahuj\u00fa karbidy chr\u00f3mu, van\u00e1du alebo volfr\u00e1mu. Pri pr\u00e1ci s t\u00fdmito kovmi sa bude pravdepodobne \"gumova\u0165\" r\u00fdchlej\u0161ie ako jeho n\u00e1protivok Al2O3;<\/p>","protected":false},"excerpt":{"rendered":"
Aluminum oxide is the ideal material to use when it comes to sanding metal and wood with higher tensile strengths, as well as grinding some tough steels that contain hard carbides such as chromium, vanadium or tungsten. Silicon carbide boasts razor-sharp grains that cut glass, plastic and metal with minimal pressure, yet wears down faster […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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":[64],"tags":[],"class_list":["post-238","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/238","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/comments?post=238"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/238\/revisions"}],"predecessor-version":[{"id":239,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/238\/revisions\/239"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/media?parent=238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/categories?post=238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/tags?post=238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}