{"id":255,"date":"2024-04-23T15:32:03","date_gmt":"2024-04-23T07:32:03","guid":{"rendered":"https:\/\/2024yy.com\/?p=255"},"modified":"2024-04-23T15:32:03","modified_gmt":"2024-04-23T07:32:03","slug":"how-to-select-a-silicon-carbide-abrasive-wheel","status":"publish","type":"post","link":"https:\/\/2024yy.com\/sk\/how-to-select-a-silicon-carbide-abrasive-wheel\/","title":{"rendered":"Ako vybra\u0165 br\u00fasny kot\u00fa\u010d z karbidu krem\u00edka"},"content":{"rendered":"

Bez oh\u013eadu na to, \u010di sa pou\u017e\u00edva na br\u00fasenie hrdze z kovu alebo na pr\u00edpravu na zv\u00e1ranie, br\u00fasny kot\u00fa\u010d ur\u010dite zefekt\u00edvni pr\u00e1cu. Pri v\u00fdbere kot\u00fa\u010da je d\u00f4le\u017eit\u00e9 zv\u00e1\u017ei\u0165 faktory, ako je ve\u013ekos\u0165 zrna, zrnitos\u0165 a typ spojiva.<\/p>\n

Br\u00fasne kot\u00fa\u010de s\u00fa vyroben\u00e9 z pr\u00e1\u0161kov\u00fdch br\u00fasnych z\u0155n, ktor\u00e9 s\u00fa spojen\u00e9 lepidlom zo \u017eivice alebo oxidu hlinit\u00e9ho, pri\u010dom ostr\u00e9 br\u00fasne zrn\u00e1 sa pri prechode cez povrch zarez\u00e1vaj\u00fa do povrchu.<\/p>\n

Typy<\/h2>\n

Br\u00fasne materi\u00e1ly s\u00fa pravdepodobne najd\u00f4le\u017eitej\u0161\u00edm materi\u00e1lom pri akejko\u013evek aplik\u00e1cii. Ka\u017ed\u00e1 aplik\u00e1cia si vy\u017eaduje in\u00e9 druhy br\u00fasiva; br\u00fasne kot\u00fa\u010de na kovy vy\u017eaduj\u00fa br\u00fasivo z oxidu hlinit\u00e9ho, ktor\u00e9 je schopn\u00e9 br\u00fasi\u0165 vysokopevnostn\u00e9 materi\u00e1ly, ako je oce\u013e a vysokopevnostn\u00e9 zliatiny bronzu, zatia\u013e \u010do na in\u00e9 \u00fa\u010dely m\u00f4\u017eu by\u0165 vhodnej\u0161ie m\u00e4k\u0161ie materi\u00e1ly, ako je karbid krem\u00edka.<\/p>\n

Typ vybran\u00e9ho br\u00fasiva ur\u010duje jeho rezn\u00fa kapacitu, prisp\u00f4sobivos\u0165 na spracovanie a po\u017eadovan\u00fa ve\u013ekos\u0165 zrna pri br\u00fasen\u00ed alebo rezan\u00ed materi\u00e1lu. Okrem toho treba pred v\u00fdberom typu br\u00fasiva zoh\u013eadni\u0165 aj fyzik\u00e1lne a chemick\u00e9 vlastnosti materi\u00e1lov obrobkov.<\/p>\n

Oxid hlinit\u00fd a karbid krem\u00edka patria medzi naj\u010dastej\u0161ie pou\u017e\u00edvan\u00e9 br\u00fasiv\u00e1, pri\u010dom karbid krem\u00edka sa \u010dasto dod\u00e1va v dvoch variantoch - \u010diernom a zelenom. \u010cierny karbid krem\u00edka sa m\u00f4\u017ee pochv\u00e1li\u0165 vy\u0161\u0161ou tvrdos\u0165ou a krehkos\u0165ou ako umel\u00e9 korundov\u00e9 br\u00fasivo, v\u010faka \u010domu je vhodn\u00fd na br\u00fasenie liatiny, ne\u017eelezn\u00fdch kovov s n\u00edzkou pevnos\u0165ou v \u0165ahu, ako aj tvrd\u0161\u00edch kovov a nekovov s vy\u0161\u0161ou pevnos\u0165ou v \u0165ahu, napr\u00edklad pri br\u00fasen\u00ed z\u00e1pustiek alebo honovan\u00ed valcov motorov. Zelen\u00fd karbid krem\u00edka m\u00e1 v\u00e4\u010d\u0161iu drobivos\u0165 ako jeho \u010dierny n\u00e1protivok, v\u010faka \u010domu je vhodn\u00fd na opracovanie tvrd\u0161\u00edch kovov alebo nekovov s vy\u0161\u0161ou pevnos\u0165ou v \u0165ahu, ako je napr\u00edklad br\u00fasenie z\u00e1pustiek alebo honovanie valcov motorov. Br\u00fasne zrn\u00e1 zmie\u0161an\u00e9 so spojivami sa potom lisuj\u00fa do kot\u00fa\u010dov, ktor\u00e9 sa potom zahrej\u00fa v peci alebo podobnom zariaden\u00ed, \u010d\u00edm sa ich spojenie zosklovat\u00ed a pevne dr\u017e\u00ed pohromade.<\/p>\n

Aplik\u00e1cie<\/h2>\n

Br\u00fasne kot\u00fa\u010de z karbidu krem\u00edka sa m\u00f4\u017eu pou\u017e\u00edva\u0165 na br\u00fasenie materi\u00e1lov, ako je hlin\u00edk, liatina a farebn\u00e9 kovy, ako aj keramika a kame\u0148. Okrem toho s\u00fa tieto kot\u00fa\u010de vynikaj\u00facim rie\u0161en\u00edm pre m\u00e4kk\u00e9 materi\u00e1ly, ako je drevo a farba, preto\u017ee produkuj\u00fa minim\u00e1lny tepeln\u00fd v\u00fdkon a z\u00e1rove\u0148 vytv\u00e1raj\u00fa vysokokvalitn\u00e9 povrchov\u00e9 \u00fapravy s minim\u00e1lnym mno\u017estvom vyprodukovan\u00e9ho odpadu.<\/p>\n

Zrnitos\u0165 br\u00fasiva je neoddelite\u013en\u00fdm faktorom pri v\u00fdbere kot\u00fa\u010da. Zrnitos\u0165 sa pohybuje od hrubej po jemn\u00fa; vy\u0161\u0161ie \u010d\u00edsla ozna\u010duj\u00fa jemnej\u0161ie zrn\u00e1. Okrem toho v z\u00e1vislosti od br\u00fasen\u00e9ho materi\u00e1lu (napr\u00edklad zrn\u00e1 oxidu hlinit\u00e9ho alebo oxidu zirkoni\u010dit\u00e9ho, ktor\u00e9 lep\u0161ie funguj\u00fa na kovy s vy\u0161\u0161ou pevnos\u0165ou v \u0165ahu, oproti zrn\u00e1m zelen\u00e9ho karbidu krem\u00edka, ktor\u00e9 funguj\u00fa na tvrd\u0161ie alebo krehk\u00e9 materi\u00e1ly) si niektor\u00e9 kot\u00fa\u010de vy\u017eaduj\u00fa in\u00e9 druhy br\u00fasiva ako in\u00e9.<\/p>\n

Unitizovan\u00e9 kot\u00fa\u010de sa od in\u00fdch foriem lepen\u00fdch br\u00fasnych materi\u00e1lov l\u00ed\u0161ia t\u00fdm, \u017ee kombinuj\u00fa netkan\u00e9 vl\u00e1kna a abraz\u00edvny miner\u00e1l s pevnou \u017eivicovou v\u00e4zbou, \u010d\u00edm vytv\u00e1raj\u00fa extr\u00e9mne odoln\u00fd kot\u00fa\u010d, ktor\u00fd je schopn\u00fd odola\u0165 ve\u013ek\u00e9mu tlaku. Unitizovan\u00e9 kot\u00fa\u010de s\u00fa k dispoz\u00edcii v r\u00f4znych hustot\u00e1ch - od m\u00e4kkej hustoty 2 pre aplik\u00e1cie s prisp\u00f4sobivos\u0165ou a\u017e po tvrd\u00fa hustotu 8 pre zv\u00fd\u0161en\u00fa odolnos\u0165 hr\u00e1n - a pon\u00fakaj\u00fa bezkonkuren\u010dn\u00fa trvanlivos\u0165, pokia\u013e ide o odolnos\u0165 vo\u010di opotrebovaniu.<\/p>\n

Grit<\/h2>\n

Zrnitos\u0165 na \u0161t\u00edtku br\u00fasneho kot\u00fa\u010da ud\u00e1va, ak\u00e9 jemn\u00e9 alebo hrub\u00e9 s\u00fa jeho zrn\u00e1; v\u00e4\u010d\u0161ia zrnitos\u0165 odober\u00e1 z kovov\u00fdch povrchov v\u00e4\u010d\u0161ie triesky v\u00e4\u010d\u0161ou silou a zanech\u00e1va za sebou drsn\u00fd povrch, zatia\u013e \u010do men\u0161ia zrnitos\u0165 vytv\u00e1ra hlad\u0161ie povrchy r\u00fdchlej\u0161ou r\u00fdchlos\u0165ou s men\u0161ou spotrebou sily. Tvrd\u00e1 trieda br\u00fasiva funguje najlep\u0161ie na tvrd\u0161\u00edch materi\u00e1loch, ako je karbid alebo tvrd\u00e9 n\u00e1strojov\u00e9 ocele, ktor\u00e9 odol\u00e1vaj\u00fa vy\u0161\u0161\u00edm teplot\u00e1m; m\u00e4kk\u00e1 trieda br\u00fasiva eroduje pomal\u0161ie a odkr\u00fdva nov\u00e9 zrn\u00e1, ktor\u00e9 dobre funguj\u00fa na m\u00e4k\u0161\u00edch kovoch, ako je hlin\u00edkov\u00fd bronz alebo \u017eelezo.<\/p>\n

Oxid hlinit\u00fd je brusivo na kovov\u00e9 kot\u00fa\u010de, preto\u017ee funguje na r\u00f4zne materi\u00e1ly a kovy. Ak potrebujete dlh\u0161ie trvaj\u00face hrub\u00e9 rezn\u00e9 br\u00fasivo na uhl\u00edkov\u00e9 a legovan\u00e9 ocele, ako aj tvrd\u00e9 kovy, ako je me\u010f a tit\u00e1n, za zv\u00e1\u017eenie by mohol st\u00e1\u0165 oxid zirkoni\u010dit\u00fd, ktor\u00fd odol\u00e1va vy\u0161\u0161\u00edm teplot\u00e1m ako oxid hlinit\u00fd a z\u00e1rove\u0148 sa \u010dasom s\u00e1m nabr\u00fasi.<\/p>\n

Dlhopisy<\/h2>\n

V\u00fdber spojiva a abraz\u00edvneho materi\u00e1lu ur\u010duje v\u00fdkonnos\u0165 kot\u00fa\u010da. Na dosiahnutie maxim\u00e1lnych rezn\u00fdch v\u00fdsledkov musia by\u0165 jeho zrn\u00e1 dostato\u010dne tvrd\u00e9, aby dok\u00e1zali prereza\u0165 materi\u00e1ly obrobku, pri\u010dom jeho spojivo mus\u00ed po\u010das rezn\u00fdch oper\u00e1ci\u00ed dr\u017ea\u0165 pohromade. R\u00f4zne spojiv\u00e1 a abraz\u00edvne materi\u00e1ly maj\u00fa jedine\u010dn\u00e9 vlastnosti ur\u010den\u00e9 na \u0161pecifick\u00e9 aplik\u00e1cie.<\/p>\n

Kot\u00fa\u010de z oxidu hlinit\u00e9ho sa \u010dasto odpor\u00fa\u010daj\u00fa na br\u00fasenie m\u00e4kk\u00fdch kovov a liatiny, zatia\u013e \u010do oxid zirkoni\u010dit\u00fd vynik\u00e1 pri br\u00fasen\u00ed ocel\u00ed a zliatin. Diamantov\u00e9 kot\u00fa\u010de alebo kot\u00fa\u010de z kubick\u00e9ho nitridu b\u00f3ru (CBN) sa m\u00f4\u017eu pou\u017ei\u0165 aj pri pr\u00e1ci s extr\u00e9mne tvrd\u00fdmi materi\u00e1lmi alebo vysokopevnostn\u00fdmi zliatinami ocele.<\/p>\n

Br\u00fasne zrn\u00e1 a spojovac\u00ed materi\u00e1l sa pred zmie\u0161an\u00edm zmie\u0161aj\u00fa v miske, potom sa stla\u010dia a spekaj\u00fa do kot\u00fa\u010dov s br\u00fasnym povrchom na rezanie obrobku, ako aj s \u00fadajom o tom, ako husto s\u00fa na seba nabalen\u00e9. Kot\u00fa\u010de s vy\u0161\u0161\u00edmi \u0161trukt\u00farnymi \u010d\u00edslami maj\u00fa tendenciu dosahova\u0165 r\u00fdchlej\u0161ie rezn\u00e9 r\u00fdchlosti; kot\u00fa\u010de s ni\u017e\u0161\u00edmi \u0161trukt\u00farnymi \u010d\u00edslami vy\u017eaduj\u00fa viac energie\/amp\u00e9rov na ich pohon a maj\u00fa za n\u00e1sledok hor\u0161iu povrchov\u00fa \u00fapravu. Sklovit\u00e1 v\u00e4zba dr\u017e\u00ed tieto zrn\u00e1 pohromade a zabezpe\u010duje konzistentn\u00fa r\u00fdchlos\u0165 rezania t\u00fdm, \u017ee neust\u00e1le odkr\u00fdva nov\u00e9 \u010dastice, preto\u017ee star\u0161ie sa \u010dasom opotreb\u00favaj\u00fa.<\/p>\n

Zjednoten\u00e9 koles\u00e1<\/h2>\n

Karbid krem\u00edka sa dod\u00e1va v r\u00f4znych zlo\u017eeniach, aby sp\u013a\u0148al po\u017eiadavky r\u00f4znych aplik\u00e1ci\u00ed. Zmesi kombinuj\u00face karbid krem\u00edka a oxid hlinit\u00fd umo\u017e\u0148uj\u00fa br\u00fasenie kovov s pred\u013a\u017eenou \u017eivotnos\u0165ou na m\u00e4kk\u00fdch zliatin\u00e1ch.<\/p>\n

Sklenen\u00e9 spoje, podobne ako sklo, pon\u00fakaj\u00fa tuh\u00e9 a pevn\u00e9 br\u00fasne rie\u0161enia, ktor\u00e9 s\u00fa odoln\u00e9 vo\u010di vysok\u00fdm teplot\u00e1m a br\u00fasnym tlakom bez reakcie s vodou, kyselinami alebo olejmi.<\/p>\n

Unitizovan\u00e9 kot\u00fa\u010de s\u00fa ide\u00e1lne na odstra\u0148ovanie otrepov a \u010distenie kovov, maj\u00fa nieko\u013eko vrstiev netkan\u00e9ho abraz\u00edvneho materi\u00e1lu impregnovan\u00e9ho \u017eivicou, ktor\u00fd vytv\u00e1ra v\u00fdnimo\u010dne odoln\u00fd produkt, ide\u00e1lny na \u013eahk\u00e9 odstra\u0148ovanie materi\u00e1lu a z\u00e1rove\u0148 poskytuje atrakt\u00edvnu povrchov\u00fa \u00fapravu bez zmeny tvaru obrobku.<\/p>\n

Tieto netkan\u00e9 kot\u00fa\u010de s\u00fa \u0161peci\u00e1lne navrhnut\u00e9 na v\u0161eobecn\u00e9 \u010distenie kovov, odstra\u0148ovanie ostrapkov a le\u0161tenie. Ide\u00e1lne na pou\u017eitie na r\u00f4znych kovoch na odstra\u0148ovanie hrdze, zafarbenia zo zvarov a men\u0161\u00edch jamiek alebo \u0161krabancov, ako aj n\u00e1terov zo \u017eiv\u00edc a lepidiel. Bezprobl\u00e9mov\u00fd chod na viacer\u00fdch strojoch a z\u00e1rove\u0148 jednoduch\u00e1 \u00fadr\u017eba; skvel\u00e9 na kone\u010dn\u00fa pr\u00edpravu!<\/p>","protected":false},"excerpt":{"rendered":"

No matter if it is used for grinding off rust off metal or prepping for welding, an abrasive wheel is sure to make the task go more efficiently. When selecting your wheel it is important to consider factors like grain size, grit and bond type. Abrasive wheels are constructed using powdered abrasive grains held together …<\/p>\n

Ako vybra\u0165 br\u00fasny kot\u00fa\u010d z karbidu krem\u00edka<\/span> \u010c\u00edtajte viac \"<\/a><\/p>","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":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-255","post","type-post","status-publish","format-standard","hentry","category-product-related"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/posts\/255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/comments?post=255"}],"version-history":[{"count":1,"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/posts\/255\/revisions"}],"predecessor-version":[{"id":256,"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/posts\/255\/revisions\/256"}],"wp:attachment":[{"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/media?parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/categories?post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2024yy.com\/sk\/wp-json\/wp\/v2\/tags?post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}