Br\u00fasne kot\u00fa\u010de z karbidu krem\u00edka s\u00fa ide\u00e1lnou vo\u013ebou na br\u00fasenie materi\u00e1lov s n\u00edzkou pevnos\u0165ou v \u0165ahu, ako s\u00fa kovy a nekovy, ale ich ovl\u00e1danie m\u00f4\u017ee by\u0165 n\u00e1ro\u010dnej\u0161ie ako v pr\u00edpade br\u00fasnych materi\u00e1lov z oxidu hlin\u00edka, preto\u017ee ich zrn\u00e1 s\u00fa ostr\u00e9 ako britva a \u013eahko rozre\u017e\u00fa sklo, plast a drevovl\u00e1knit\u00e9 dosky strednej hustoty, ale nedok\u00e1\u017eu rozreza\u0165 tvrd\u0161ie materi\u00e1ly, ako je kov alebo tvrd\u00e9 drevo.<\/p>\n
Karbid krem\u00edka s tvrdos\u0165ou 9,5 na Mohsovej stupnici je jedno z najtvrd\u0161\u00edch be\u017en\u00fdch br\u00fasnych z\u0155n a v\u010faka svojim ostr\u00fdm hran\u00e1m a drobivej povahe je ide\u00e1lnou vo\u013ebou na br\u00fasenie alebo le\u0161tenie tvrd\u00fdch materi\u00e1lov. V\u010faka svojej dlhej \u017eivotnosti a recyklovate\u013enosti sa tento materi\u00e1l obzvl\u00e1\u0161\u0165 dobre osved\u010duje pri pr\u00e1ci s kovmi, ako je tit\u00e1n, nehrdzavej\u00faca oce\u013e, pancierovan\u00fd hlin\u00edk, ale m\u00f4\u017ee ma\u0165 probl\u00e9my pri pr\u00e1ci s jemnej\u0161\u00edmi povrchmi, ako je sklo a mramor.<\/p>\n
In\u00e9 br\u00fasiv\u00e1, ako napr\u00edklad oxid hlinit\u00fd alebo cBN, nepon\u00fakaj\u00fa tak\u00fd dlhodob\u00fd rezn\u00fd v\u00fdkon alebo \u017eivotnos\u0165; ich nedostato\u010dn\u00e1 lomov\u00e1 h\u00fa\u017eevnatos\u0165 rob\u00ed zo zirk\u00f3nu lep\u0161iu vo\u013ebu pri br\u00fasen\u00ed tvrd\u0161\u00edch materi\u00e1lov, ako je kalen\u00e1 oce\u013e; jeho odoln\u00e1 povaha z neho tie\u017e rob\u00ed optim\u00e1lnu vo\u013ebu pri pr\u00e1ci s hlin\u00edkom, \u017eelezom a m\u00e4kk\u00fdmi bronzov\u00fdmi materi\u00e1lmi. Prv\u00e9 p\u00edsmeno v \u0161pecifik\u00e1cii ka\u017ed\u00e9ho kot\u00fa\u010da zvy\u010dajne ozna\u010duje, ak\u00fd typ zrna obsahuje: A ozna\u010duje br\u00fasivo z oxidu hlinit\u00e9ho, ako je oxid hlinit\u00fd; B sa vz\u0165ahuje na cBN; C ozna\u010duje karbid krem\u00edka, zatia\u013e \u010do Z znamen\u00e1 br\u00fasivo zo zirk\u00f3nu - ka\u017ed\u00fd v\u00fdrobca pon\u00faka r\u00f4zne zoznamy na z\u00e1klade zoznamov v\u00fdrobcov; av\u0161ak<\/p>\n
Zrnitos\u0165 sa vz\u0165ahuje na ve\u013ekos\u0165 a pevnos\u0165 spojenia jednotliv\u00fdch br\u00fasnych \u010dast\u00edc, pri\u010dom v\u00e4\u010d\u0161ie \u010dastice maj\u00fa v\u00e4\u010d\u0161iu zrnitos\u0165, a preto s\u00fa vhodnej\u0161ie na hrub\u00e9 br\u00fasenie m\u00e4kk\u00fdch materi\u00e1lov, zatia\u013e \u010do men\u0161ie \u010dastice maj\u00fa tendenciu reza\u0165 r\u00fdchlej\u0161ie, s vy\u0161\u0161ou ostros\u0165ou a reznou r\u00fdchlos\u0165ou. Adh\u00e9zne v\u00e4zby dr\u017eia tieto \u010dastice pevne v kot\u00fa\u010doch - pri br\u00fasnych kot\u00fa\u010doch sa be\u017ene pou\u017e\u00edvaj\u00fa sklovit\u00e9 alebo \u017eivicov\u00e9 v\u00e4zby.<\/p>\n
Abraz\u00edva Sol Gel Alpha Alumina sa v minulosti \u0165a\u017eko pou\u017e\u00edvali s kot\u00fa\u010dmi s hlin\u00edkov\u00fdm povlakom kv\u00f4li rohov\u00fdm spojom obsahuj\u00facim oxid hlinit\u00fd, ktor\u00e9 reaguj\u00fa s jeho zrnitos\u0165ou, oxiduj\u00fa ju a ved\u00fa k nadmern\u00e9mu zmr\u0161\u0165ovaniu \u0161trukt\u00fary kot\u00fa\u010da. Nov\u00e9 spojivo bez obsahu oxidu hlinit\u00e9ho, ako je uveden\u00e9 v tomto dokumente, pon\u00faka lep\u0161iu mechanick\u00fa pevnos\u0165 a odolnos\u0165 proti strate tvaru, \u010d\u00edm poskytuje jednoduch\u0161iu met\u00f3du br\u00fasenia kovov a tvrd\u00fdch materi\u00e1lov ako pri tradi\u010dn\u00fdch spojovac\u00edch materi\u00e1loch obsahuj\u00facich oxid hlinit\u00fd, ako je napr\u00edklad Kentucky Ball Clay No. 6, Nepheline Syenite alebo Flint; tieto spojiv\u00e1 sa m\u00f4\u017eu tie\u017e vypa\u013eova\u0165 pri ni\u017e\u0161\u00edch teplot\u00e1ch, aby sa zabr\u00e1nilo reakcii s ich zrnitos\u0165ou.<\/p>\n
Spojenie sa vz\u0165ahuje na pevnos\u0165 materi\u00e1lov, ktor\u00e9 dr\u017eia pohromade br\u00fasne zrn\u00e1 na kot\u00fa\u010di, a na vytvorenie r\u00f4znych druhov spojenia sa pou\u017e\u00edvaj\u00fa r\u00f4zne br\u00fasne kot\u00fa\u010de, ktor\u00e9 sa najlep\u0161ie hodia na konkr\u00e9tne materi\u00e1ly alebo aplik\u00e1cie.<\/p>\n
Oxid hlinit\u00fd, zn\u00e1my aj ako korund, je ob\u013e\u00faben\u00e9 viazan\u00e9 br\u00fasivo pou\u017e\u00edvan\u00e9 na br\u00fasenie \u017eelezn\u00fdch kovov a ne\u017eelezn\u00fdch materi\u00e1lov, ako je keramika. Okrem toho sa s touto l\u00e1tkou \u010dasto stret\u00e1vame pri ostren\u00ed n\u00e1strojov z tvrdokovu.<\/p>\n
Zelen\u00fd karbid krem\u00edka, tvrd\u0161\u00ed a krehkej\u0161\u00ed materi\u00e1l ako korund, sa \u010dasto pou\u017e\u00edva v sklovito lepen\u00fdch hrotoch a kot\u00fa\u010doch na br\u00fasenie ne\u017eelezn\u00fdch kovov s n\u00edzkou pevnos\u0165ou v \u0165ahu, ako je cementovan\u00fd karbid, ako aj tvrd\u00fdch krehk\u00fdch materi\u00e1lov, ako je cementovan\u00fd karbid.<\/p>\n
Br\u00fasny materi\u00e1l sa \u0161peci\u00e1lnym procesom br\u00fasenia vytvaruje do po\u017eadovanej podoby a spoj\u00ed sa bu\u010f \u017eivicou, alebo sklotextiln\u00fdmi spojmi. V z\u00e1vislosti od zrnitosti a pevnosti\/tuhosti v\u00e4zby sa brusivo klasifikuje ako tvrd\u00e9 alebo m\u00e4kk\u00e9; vo v\u0161eobecnosti plat\u00ed, \u017ee tvrd\u00e9 druhy lep\u0161ie funguj\u00fa na tvrd\u0161\u00edch materi\u00e1loch, zatia\u013e \u010do m\u00e4kk\u00e9 druhy najlep\u0161ie p\u00f4sobia na m\u00e4kk\u00e9 l\u00e1tky.<\/p>\n
P\u00f3rovitos\u0165 vyn\u00e1lezcovsk\u00e9ho kot\u00fa\u010da je neoddelite\u013enou s\u00fa\u010das\u0165ou jeho v\u00fdkonu, \u010do dokazuje jeho test br\u00fasenia na leptan\u00fdch krem\u00edkov\u00fdch do\u0161ti\u010dk\u00e1ch: stabiln\u00e9 maxim\u00e1lne norm\u00e1lov\u00e9 sily po\u010das dvesto cyklov br\u00fasenia do\u0161ti\u010diek pri minimaliz\u00e1cii tepeln\u00e9ho aj mechanick\u00e9ho po\u0161kodenia obrobku.<\/p>\n
Na rozdiel od be\u017en\u00fdch kot\u00fa\u010dov viazan\u00fdch \u017eivicou vykazoval vyn\u00e1jden\u00fd kot\u00fa\u010d mimoriadne priazniv\u00e9 br\u00fasne charakteristiky na sp\u00e4tn\u00e9 br\u00fasenie leptan\u00fdch pl\u00e1tkov s cie\u013eom vytvori\u0165 jemn\u00e9 dokon\u010dovacie pozadie s relat\u00edvne kon\u0161tantn\u00fdmi \u0161pi\u010dkov\u00fdmi norm\u00e1lov\u00fdmi silami a bez n\u00e1hleho n\u00e1rastu. Na rozdiel od t\u00fdchto v\u00fdsledkov konven\u010dn\u00e9 porovn\u00e1vacie koliesko viazan\u00e9 \u017eivicou produkovalo neprijate\u013ene r\u00fdchly n\u00e1rast \u0161pi\u010dkovej norm\u00e1lovej sily, ktor\u00fd ich robil nepou\u017eite\u013en\u00fdmi. Naopak, po\u010das toho ist\u00e9ho experimentu konven\u010dn\u00e9 porovn\u00e1vacie koliesko sp\u00f4sobilo nepretr\u017eit\u00fd, r\u00fdchly n\u00e1rast vrcholovej norm\u00e1lovej sily, ktor\u00fd sp\u00f4sobil, \u017ee ich obrobok bol nepou\u017eite\u013en\u00fd; naopak, po\u010das toho ist\u00e9ho experimentu, zatia\u013e \u010do pri porovnan\u00ed konven\u010dn\u00e9 porovn\u00e1vacie kolieska vykazovali nepretr\u017eit\u00fd, r\u00fdchly n\u00e1rast vrcholovej norm\u00e1lovej sily, ktor\u00fd ich nakoniec sp\u00f4sobil, \u017ee boli nepou\u017eite\u013en\u00e9; naopak, po\u010das toho ist\u00e9ho experimentu vyn\u00e1jden\u00e9 koliesko vytv\u00e1ralo ve\u013emi \u017eiaduce vlastnosti br\u00fasenia, ktor\u00e9 produkovalo jemn\u00e9 fin\u00e1lne pozadie, pri\u010dom malo n\u00edzky, st\u00e1ly n\u00e1rast vrcholovej norm\u00e1lovej sily.<\/p>\n
Tento br\u00fasny kot\u00fa\u010d m\u00e1 zelen\u00e9 zrn\u00e1 karbidu krem\u00edka so zrnitos\u0165ou 60 a sklovit\u00fd spoj, ktor\u00fd sa sklad\u00e1 zo surov\u00edn, ako je gu\u013e\u00f4\u010dkov\u00e1 hlina Kentucky \u010d. 6, nefel\u00ednov\u00fd syenit, kreme\u0148 a sklenen\u00e1 frita. V ide\u00e1lnom pr\u00edpade by jeho maxim\u00e1lna teplota v\u00fdpalu nemala presiahnu\u0165 1100 stup\u0148ov C; objem jeho p\u00f3rov mo\u017eno regulova\u0165 pomocou dut\u00fdch keramick\u00fdch gu\u013e\u00f4\u010dok, ktor\u00e9 prednostne reaguj\u00fa s jeho zlo\u017ekami a z\u00e1rove\u0148 \u0161etria zrn\u00e1 karbidu krem\u00edka pred oxid\u00e1ciou po\u010das v\u00fdpalu.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide abrasive wheels are an ideal choice for grinding low tensile strength materials like metals and nonmetallics, yet can […]<\/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-68","post","type-post","status-publish","format-standard","hentry","category-sic-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts\/68","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/comments?post=68"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts\/68\/revisions"}],"predecessor-version":[{"id":69,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts\/68\/revisions\/69"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/media?parent=68"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/categories?post=68"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/tags?post=68"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}