Karbid krem\u00edka je mimoriadne odoln\u00fd materi\u00e1l, ktor\u00fd odol\u00e1va vysok\u00fdm teplot\u00e1m bez toho, aby sa rozbil alebo praskol, v\u010faka \u010domu je vhodn\u00fd na pou\u017eitie v mnoh\u00fdch priemyseln\u00fdch peciach.<\/p>\n
Ich \u017eivotnos\u0165 je v\u0161ak obmedzen\u00e1 mno\u017estvom energie, ktor\u00fa mo\u017eno pou\u017ei\u0165; ich odpor sa men\u00ed s teplotou a \u010dasom.<\/p>\n
Karbid krem\u00edka je extr\u00e9mne tvrd\u00e1 kry\u0161talick\u00e1 zl\u00fa\u010denina krem\u00edka a uhl\u00edka, ktor\u00e1 sa u\u017e dlho vyu\u017e\u00edva ako priemyseln\u00fd materi\u00e1l. Od br\u00fasneho papiera a\u017e po rezn\u00e9 n\u00e1stroje sa pou\u017e\u00edva vo v\u0161etk\u00fdch oblastiach, od r\u00farkov\u00fdch vykurovac\u00edch telies pre priemyseln\u00e9 pece a\u017e po s\u00fa\u010dasti \u010derpadiel, raketov\u00e9 motory a polovodi\u010dov\u00e9 substr\u00e1ty pre sveteln\u00e9 di\u00f3dy.<\/p>\n
Vykurovacie prvky z karbidu krem\u00edka v\u010fa\u010dia za svoju dlh\u00fa \u017eivotnos\u0165 a energetick\u00fa \u00fa\u010dinnos\u0165 efektu zn\u00e1memu ako \"joulovsk\u00fd ohrev\". Ke\u010f prvkom prech\u00e1dza elektrick\u00fd pr\u00fad, zahrieva sa, \u010d\u00edm sa zahrieva aj materi\u00e1l v jeho okol\u00ed. Ke\u010f\u017ee \u010dasom vznik\u00e1 v\u00e4\u010d\u0161\u00ed odpor, na vytvorenie rovnakej \u00farovne produkcie tepla je potrebn\u00fd men\u0161\u00ed elektrick\u00fd pr\u00fad; vykurovacie prvky z karbidu krem\u00edka s\u00fa preto ve\u013emi energeticky \u00fa\u010dinn\u00e9.<\/p>\n
Kvalitn\u00e9 vykurovacie prvky z karbidu krem\u00edka maj\u00fa pevn\u00e9 limity pr\u00fadu, \u010do znamen\u00e1, \u017ee pr\u00fad je obmedzen\u00fd nastaven\u00edm hornej maxim\u00e1lnej hodnoty. To umo\u017e\u0148uje prvku dosiahnu\u0165 a udr\u017ea\u0165 prev\u00e1dzkov\u00fa teplotu s presnos\u0165ou, pri\u010dom sa eliminuje prekro\u010denie, ku ktor\u00e9mu doch\u00e1dza pri regul\u00e1cii variabiln\u00e9ho pr\u00fadu.<\/p>\n
Disilicid molybd\u00e9nu (MoSi2) a karbid krem\u00edka (SiC) s\u00fa \u00fa\u010dinn\u00e9 vysokoteplotn\u00e9 elektrick\u00e9 ohrieva\u010de na pou\u017eitie v r\u00f4znych aplik\u00e1ci\u00e1ch v z\u00e1vislosti od va\u0161ich konkr\u00e9tnych po\u017eiadaviek. Vy\u0161\u0161ia odolnos\u0165 MoSi2 vo\u010di oxid\u00e1cii umo\u017e\u0148uje jeho pou\u017eitie v prostrediach bohat\u00fdch na kysl\u00edk a\u017e do teploty 1600 \u00b0C; na druhej strane SiC poskytuje vy\u0161\u0161iu mechanick\u00fa pevnos\u0165, ako aj odolnos\u0165 vo\u010di tepeln\u00fdm \u0161okom.<\/p>\n
Vykurovacie prvky z karbidu krem\u00edka s\u00fa schopn\u00e9 odol\u00e1va\u0165 vy\u0161\u0161\u00edm teplot\u00e1m ako kovov\u00e9, \u010do z nich rob\u00ed vynikaj\u00facu vo\u013ebu pre aplik\u00e1cie vy\u017eaduj\u00face vysokoteplotn\u00e9 podmienky, ako s\u00fa keramick\u00e9 pece a pece, zariadenia na tepeln\u00e9 spracovanie kovov, leteck\u00e9 aplik\u00e1cie alebo tepeln\u00e9 spracovanie kovov.<\/p>\n
Tieto pru\u017en\u00e9 materi\u00e1ly odol\u00e1vaj\u00fa teplot\u00e1m a\u017e do 1625 stup\u0148ov Celzia bez toho, aby sa roztavili alebo vznikli trhliny, ako aj chemik\u00e1li\u00e1m a koroz\u00edvnemu prostrediu. Tieto odoln\u00e9 dlhodob\u00e9 kusy vyroben\u00e9 z extr\u00e9mne tvrd\u00e9ho a krehk\u00e9ho \u017eiaruvzdorn\u00e9ho materi\u00e1lu poskytuj\u00fa dlhodob\u00fa slu\u017ebu.<\/p>\n
N\u00edzky koeficient tepelnej roz\u0165a\u017enosti karbidu krem\u00edka mu umo\u017e\u0148uje odol\u00e1va\u0165 r\u00fdchlym teplotn\u00fdm zmen\u00e1m bez deform\u00e1cie, \u010do z neho rob\u00ed vynikaj\u00facu vo\u013ebu pre prostredia vy\u017eaduj\u00face stabiln\u00e9 \u0161trukt\u00fary v podmienkach vysok\u00fdch tepl\u00f4t.<\/p>\n
Pri vy\u0161\u0161\u00edch teplot\u00e1ch m\u00f4\u017eu by\u0165 vykurovacie prvky n\u00e1chyln\u00e9 na oxid\u00e1ciu, \u010do vedie k tomu, \u017ee sa odhal\u00ed viac vodiv\u00e9ho materi\u00e1lu a zv\u00fd\u0161i sa jeho elektrick\u00fd odpor. Na potla\u010denie tohto \u00fa\u010dinku je d\u00f4le\u017eit\u00e9 kontrolova\u0165 teplotu ich vystavenia.<\/p>\n
Vykurovacie prvky z karbidu krem\u00edka sa dod\u00e1vaj\u00fa v r\u00f4znych tvaroch a ve\u013ekostiach, aby vyhovovali r\u00f4znym typom zariaden\u00ed a procesom, od vyhotoven\u00ed s jednou ty\u010dou a\u017e po vyhotovenia s viacer\u00fdmi nohami, ktor\u00e9 sp\u013a\u0148aj\u00fa \u0161pecifick\u00e9 po\u017eiadavky na pou\u017eitie. Karbidov\u00e9 prvky Globar HD boli skon\u0161truovan\u00e9 tak, aby vydr\u017eali aj tie najn\u00e1ro\u010dnej\u0161ie aplik\u00e1cie; obsahuj\u00fa hor\u00face z\u00f3ny z rekry\u0161talizovan\u00e9ho karbidu krem\u00edka viazan\u00e9ho reakciou, ktor\u00e9 s\u00fa navrhnut\u00e9 tak, aby odol\u00e1vali oxid\u00e1cii prchav\u00fdmi l\u00e1tkami procesu alebo reakt\u00edvnym prostrediam, ako aj aplik\u00e1ci\u00e1m s ve\u013ek\u00fdm za\u0165a\u017een\u00edm - ide\u00e1lne pre aplik\u00e1cie s dlh\u00fdm rozp\u00e4t\u00edm!<\/p>\n
Elektrick\u00e9 ohrieva\u010de z karbidu krem\u00edka prekonali kovov\u00e9 alternat\u00edvy v mnoh\u00fdch aplik\u00e1ci\u00e1ch v\u010faka svojim vynikaj\u00facim odolnostn\u00fdm vlastnostiam, v\u010faka \u010domu sa stali ob\u013e\u00fabenou vo\u013ebou vo vysokoteplotn\u00fdch elektrick\u00fdch peciach pou\u017e\u00edvan\u00fdch v keramike, skl\u00e1rstve, sk\u00fa\u0161obn\u00edctve, metalurgii a stroj\u00e1rstve. Medzi \u010fal\u0161ie v\u00fdhody oproti kovov\u00fdm ohrieva\u010dom patr\u00ed ich vy\u0161\u0161ia odolnos\u0165 vo\u010di prev\u00e1dzkov\u00fdm teplot\u00e1m; odolnos\u0165 vo\u010di kor\u00f3zii; v\u00fdhody dlh\u0161ej \u017eivotnosti.<\/p>\n
Prvok EREMA je odporov\u00fd vykurovac\u00ed prvok ur\u010den\u00fd na premenu elektrickej energie na tepeln\u00fa energiu pod\u013ea Jouleovho z\u00e1kona (W=I2R). Tieto prvky maj\u00fa hor\u00facu z\u00f3nu tvoren\u00fa rekry\u0161talizovan\u00fdm zelen\u00fdm alfa karbidom krem\u00edka navrhnut\u00fdm na maxim\u00e1lnu odolnos\u0165 proti kor\u00f3zii a oxid\u00e1cii v prostred\u00ed procesn\u00fdch plynov. \u0160tandardne sa dod\u00e1vaj\u00fa v \u0161tandardn\u00fdch ve\u013ekostiach a geometri\u00e1ch, pri\u010dom je mo\u017en\u00e9 vyhotovi\u0165 aj z\u00e1kazkov\u00e9 vyhotovenia v z\u00e1vislosti od \u0161pecifick\u00fdch potrieb procesu.<\/p>\n
Karbid krem\u00edka, extr\u00e9mne tvrd\u00e1 kry\u0161talick\u00e1 zl\u00fa\u010denina krem\u00edka a uhl\u00edka, ktor\u00e1 sa prirodzene vyskytuje vo vz\u00e1cnych miner\u00e1loch, ako je moissanit, korund a kimberlit, a tie\u017e sa vyr\u00e1ba synteticky v r\u00f4znych stup\u0148och s pr\u00edmesou b\u00f3ru, fosforu alebo hlin\u00edka, je extr\u00e9mne tvrd\u00e1 zl\u00fa\u010denina s vynikaj\u00facimi tepeln\u00fdmi a mechanick\u00fdmi vlastnos\u0165ami, ako je vysok\u00e1 teplota sublim\u00e1cie pri taven\u00ed alebo sublim\u00e1cii a ve\u013ek\u00e1 tepeln\u00e1 vodivos\u0165.<\/p>\n
Vykurovacie prvky z karbidu krem\u00edka sa pou\u017e\u00edvan\u00edm zhor\u0161uj\u00fa v d\u00f4sledku oxid\u00e1cie na hraniciach z\u0155n, kde sa vytv\u00e1ra film oxidu kremi\u010dit\u00e9ho, ktor\u00fd zvy\u0161uje odolnos\u0165 a skracuje ich \u017eivotnos\u0165. Aby ste minimalizovali oxid\u00e1ciu, prev\u00e1dzkujte ich pri ni\u017e\u0161om za\u0165a\u017een\u00ed, ako je na nich vyzna\u010den\u00e9, a nepretr\u017eite. To m\u00f4\u017ee pom\u00f4c\u0165.<\/p>\n
Vykurovacie prvky z karbidu krem\u00edka s\u00fa zn\u00e1me t\u00fdm, \u017ee odol\u00e1vaj\u00fa extr\u00e9mnym teplot\u00e1m s malou stratou v\u00fdkonu pri opakovanom pou\u017e\u00edvan\u00ed v n\u00e1ro\u010dn\u00fdch podmienkach a s\u00fa odoln\u00e9 vo\u010di kor\u00f3zii - vlastnosti, ktor\u00e9 robia z karbidu krem\u00edka z\u00e1kladn\u00e9 komponenty v priemyseln\u00fdch a laborat\u00f3rnych peciach.<\/p>\n
Prvky karbidu krem\u00edka maj\u00fa mnohostrann\u00e9 vyu\u017eitie, od tepeln\u00e9ho spracovania kovov a v\u00fdroby keramiky a\u017e po v\u00fdrobu skla a polovodi\u010dov. Karbid krem\u00edka sa dod\u00e1va v r\u00f4znych tvaroch, ve\u013ekostiach a geometri\u00e1ch, aby sp\u013a\u0148al \u0161pecifick\u00e9 po\u017eiadavky jednotliv\u00fdch procesov a zariaden\u00ed.<\/p>\n
Na \u017eivotnos\u0165 prvkov maj\u00fa vplyv aj faktory prostredia; vodn\u00e1 para, oxidy dus\u00edka, chlorovod\u00edk, alkalick\u00e9 plyny a oxidy kovov sp\u00f4sobuj\u00fa kor\u00f3ziu prvkov karbidu krem\u00edka, \u010d\u00edm v\u00fdrazne zni\u017euj\u00fa ich \u017eivotnos\u0165. V ide\u00e1lnom pr\u00edpade by mali by\u0165 prvky umiestnen\u00e9 v suchom prostred\u00ed, aby sa dosiahla maxim\u00e1lna \u017eivotnos\u0165.<\/p>\n
Pravideln\u00e1 kontrola a \u00fadr\u017eba m\u00f4\u017ee v\u00fdrazne pred\u013a\u017ei\u0165 \u017eivotnos\u0165 prvkov z karbidu krem\u00edka. Hlin\u00edkov\u00e9 vrstvy na oboch koncoch by sa mali kontrolova\u0165, \u010di nevykazuj\u00fa zn\u00e1mky po\u0161kodenia alebo degrad\u00e1cie; mus\u00ed sa kontrolova\u0165 aj ich tesnos\u0165 a vyrovnanie. Okrem toho sa musia prvky pravidelne kontrolova\u0165, \u010di nevykazuj\u00fa zn\u00e1mky oxid\u00e1cie, s\u010dernania alebo praskl\u00edn, aby sa zabezpe\u010dila maxim\u00e1lna \u017eivotnos\u0165 a produktivita.<\/p>\n
Vykurovac\u00ed prvok z karbidu krem\u00edka typu DM m\u00e1 dve \u010dasti so z\u00e1vitom M14 ur\u010den\u00e9 na vz\u00e1jomn\u00e9 nam\u00e1hanie, \u010do pom\u00e1ha zn\u00ed\u017ei\u0165 \u00farove\u0148 nam\u00e1hania a pred\u013a\u017ei\u0165 jeho \u017eivotnos\u0165. Okrem toho otvor s vn\u00fatorn\u00fdm z\u00e1vitom M5 umo\u017e\u0148uje jeho priame pripojenie k z\u00e1kazn\u00edckym zdrojom energie bez rizika vystavenia grafitu priamym pripojen\u00edm k nap\u00e1janiu.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide is an extremely resilient material which can withstand high temperatures without shattering or cracking, making them suitable for use in many industrial furnaces. However, their lifespan is limited by how much power can be applied; their resistance changes with temperature and time. Corrosion Resistant Silicon carbide is an extremely hard crystalline compound of […]<\/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-246","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/246","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=246"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/246\/revisions"}],"predecessor-version":[{"id":247,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/246\/revisions\/247"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/media?parent=246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/categories?post=246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/tags?post=246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}