{"id":179,"date":"2023-07-10T13:28:39","date_gmt":"2023-07-10T05:28:39","guid":{"rendered":"https:\/\/advance-ceramics.com\/?p=179"},"modified":"2023-07-10T13:33:22","modified_gmt":"2023-07-10T05:33:22","slug":"karbid-kremiku-jako-soucastky-odolne-proti-opotrebeni-a-vysokym-teplotam","status":"publish","type":"post","link":"https:\/\/advance-ceramics.com\/cs\/silicon-carbide-ceramic-as-wear-resistant-and-high-temperature-parts\/","title":{"rendered":"karbid k\u0159em\u00edku jako sou\u010d\u00e1stky odoln\u00e9 proti opot\u0159eben\u00ed a vysok\u00fdm teplot\u00e1m"},"content":{"rendered":"

Karbid k\u0159em\u00edku se pou\u017e\u00edv\u00e1 ve stroj\u00edrenstv\u00ed a chemick\u00e9m pr\u016fmyslu k v\u00fdrob\u011b nov\u00e9 generace mechanick\u00fdch t\u011bsnic\u00edch materi\u00e1l\u016f, kluzn\u00fdch lo\u017eisek, korozivzdorn\u00fdch trubek, lopatek ventil\u016f a lopatek ventil\u00e1tor\u016f. Zejm\u00e9na jako mechanick\u00fd t\u011bsnic\u00ed materi\u00e1l byl mezin\u00e1rodn\u011b uzn\u00e1n jako \u010dtvrt\u00e1 generace z\u00e1kladn\u00edch materi\u00e1l\u016f od kovu, oxidu hlinit\u00e9ho, karbidu, jeho odolnost v\u016f\u010di kyselin\u00e1m a z\u00e1sad\u00e1m je ve srovn\u00e1n\u00ed s jin\u00fdmi materi\u00e1ly mimo\u0159\u00e1dn\u011b dobr\u00e1, t\u00e9m\u011b\u0159 \u017e\u00e1dn\u00fd materi\u00e1l se s n\u00edm ned\u00e1 srovn\u00e1vat. D\u00edky vysok\u00e9 tepeln\u00e9 vodivosti keramiky z karbidu k\u0159em\u00edku ji lze pou\u017e\u00edt pro vysokoteplotn\u00ed v\u00fdm\u011bn\u00edky tepla v metalurgick\u00fdch pec\u00edch a teplota m\u016f\u017ee b\u00fdt a\u017e 1300 \u2103; pou\u017eit\u00edm p\u00edskov\u00fdch v\u00e1lc\u016f z karbidu k\u0159em\u00edku k mlet\u00ed r\u00fd\u017ee lze zlep\u0161it kvalitu r\u00fd\u017ee ve srovn\u00e1n\u00ed s jin\u00fdmi p\u00edskov\u00fdmi v\u00e1lci a v\u00fdt\u011b\u017enost r\u00fd\u017ee lze zv\u00fd\u0161it o 1 % a\u017e 2 % a n\u00e1klady lze sn\u00ed\u017eit o 30 % a\u017e 40 %. Pou\u017eit\u00ed metody galvanick\u00e9ho pokovov\u00e1n\u00ed k nanesen\u00ed pr\u00e1\u0161kov\u00e9ho karbidu k\u0159em\u00edku na ob\u011b\u017en\u00e9 kolo hydraulick\u00e9 turb\u00edny m\u016f\u017ee v\u00fdrazn\u011b zlep\u0161it odolnost proti opot\u0159eben\u00ed ob\u011b\u017en\u00e9ho kola a prodlou\u017eit jeho cyklus \u00fadr\u017eby. Pou\u017eit\u00ed mechanick\u00e9ho tlaku k vtla\u010den\u00ed kubick\u00e9ho pr\u00e1\u0161ku karbidu k\u0159em\u00edku a mikronizovan\u00e9ho pr\u00e1\u0161ku W28 do st\u011bny v\u00e1lce spalovac\u00edho motoru m\u016f\u017ee prodlou\u017eit \u017eivotnost bloku v\u00e1lc\u016f v\u00edce ne\u017e jednou. Pou\u017eit\u00edm sm\u011bsi karbidu k\u0159em\u00edku a boraxu na povrchu \u010depele kombajnu z oceli 45# chemickou tepelnou \u00fapravou boru lze dos\u00e1hnout toho, \u017ee vrstva boru dos\u00e1hne tvrdosti mikrotvrdosti 1 800 ~ 2 000 . Ve v\u00e1lcovn\u00e1ch oceli se \u00fasp\u011b\u0161n\u011b pou\u017e\u00edvaj\u00ed v\u00e1lce z karbidu k\u0159em\u00edku, kter\u00e9 maj\u00ed lep\u0161\u00ed tepelnou odolnost a odolnost proti opot\u0159eben\u00ed ne\u017e kovov\u00e9 v\u00e1lce a mohou zlep\u0161it kvalitu v\u00e1lcovan\u00e9 oceli. S materi\u00e1ly z karbidu k\u0159em\u00edku vyroben\u00fdmi z p\u00edskov\u00fdch \u010derpadel a hydrocyklon\u016f, s velmi dobrou odolnost\u00ed proti opot\u0159eben\u00ed; s materi\u00e1ly z karbidu k\u0159em\u00edku vyroben\u00fdmi z vlo\u017eek v\u00e1lc\u016f a dal\u0161\u00edch d\u00edl\u016f odoln\u00fdch proti opot\u0159eben\u00ed lze \u0161iroce pou\u017e\u00edt v ropn\u00e9m a chemick\u00e9m pr\u016fmyslu, nap\u0159\u00edklad ve stroj\u00edrenstv\u00ed; lze je tak\u00e9 pou\u017e\u00edt jako materi\u00e1ly pro vysokoteplotn\u00ed tepeln\u00e9 stroje. Keramika z karbidu k\u0159em\u00edku m\u00e1 dobr\u00e9 vysokoteplotn\u00ed vlastnosti, jako je vysokoteplotn\u00ed oxidace, vysokoteplotn\u00ed pevnost, te\u010den\u00ed, dobr\u00e1 tepeln\u00e1 vodivost a n\u00edzk\u00e1 hustota, je v\u00fdhodn\u00e1 pro vysokoteplotn\u00ed \u010d\u00e1sti tepeln\u00fdch stroj\u016f, jako jsou: pro vysokoteplotn\u00ed spalovac\u00ed komoru turb\u00edny, statick\u00e9 lopatky turb\u00edny, vysokoteplotn\u00ed trysky atd. Vyrobeno z karbidu k\u0159em\u00edku p\u00edst a vlo\u017eka v\u00e1lce pro nemazac\u00ed nechladic\u00ed vzn\u011btov\u00fd motor, m\u016f\u017ee sn\u00ed\u017eit t\u0159en\u00ed 30 % a\u017e 50 %, v\u00fdrazn\u011b sn\u00ed\u017eit hluk.<\/p>\n

\"keramick\u00fd<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Silicon carbide ceramic are used in the mechanical and chemical industries to produce a new generation of mechanical sealing materials, sliding bearings, corrosion-resistant pipes, valve blades and fan blades. Especially as a mechanical seal material has been internationally recognized as the fourth generation of basic materials since metal, alumina, carbide, its resistance to acid and… \u010c\u00edst d\u00e1le »karbid k\u0159em\u00edku jako sou\u010d\u00e1stky odoln\u00e9 proti opot\u0159eben\u00ed a vysok\u00fdm teplot\u00e1m<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-179","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t