[Inkcazo yesishwankathelo] Uxinzelelo lwe-atmospheric sinteredi-silicon carbidei-non-metallic carbide idityaniswe ne-silicon kunye ne-carbon covalent bond, kwaye ukuqina kwayo okwesibini kuphela kwi-diamond kunye ne-boron carbide.Ifomula yeekhemikhali yiSiC.Iikristale ezingenambala, ezibhlowu namnyama ngenkangeleko xa i-oxidized okanye iqulethe ukungcola.
Uxinzelelo lwe-atmospheric sinteredi-silicon carbidei-non-metallic carbide ene-silicon kunye ne-carbon covalent bond, kwaye ukuqina kwayo okwesibini kuphela kwi-diamond kunye ne-boron carbide.Ifomula yeekhemikhali yiSiC.Iikristale ezingenambala, ezibhlowu namnyama ngenkangeleko xa i-oxidized okanye iqulethe ukungcola.Ukuguqulwa kwei-silicon carbidengesakhiwo sedayimani ngokuqhelekileyo kuthiwa yi-emery.Ukuqina kwe-emery kusondele kwidayimane, ukuzinza okuhle kwe-thermal, kuzinzile kwi-hydroxy acid isisombululo esinamanzi kunye ne-sulfuric acid egxininisiweyo, kunye nokungazinzi kwi-asidi edibeneyo okanye i-phosphoric acid ye-hydrogen acid kunye ne-nitric acid.Iialkali ezinyibilikayo kwindawo enomngxuma ziyahlula.Yahlulwe ibe yinto yokwenziwai-silicon carbidekunye ne-silicon carbide yendalo.I-silicon carbide yendalo, eyaziwa ngokuba yi-carbonite, ifumaneka ikakhulu kwi-kimberlite kunye ne-volcanic amphibolite, kodwa isixa sayo sincinci kwaye asinalo ixabiso lokumba.
Uxinzelelo lweatmospheri yeshishini luyekilei-silicon carbidengumxube we -SiC kunye no -SiC kwaye iza ngemibala emibini: emnyama kunye eluhlaza.I-silicon carbide ecocekileyo ayinambala, equlethe ukungcola kumnyama, eluhlaza, eluhlaza okwesibhakabhaka, emthubi.Imida ye-hexagonal kunye ne-cubic grain, i-crystal i-plate, ikholamu edibeneyo.Glass luster, ingxinano 3.17-3.47G/CM3, Morse ubulukhuni 9.2, imakroskopu kwakhona kwi 30380 ~ 33320MPa iqondo lokunyibilika: atmospheric 2050 waqala ukwahlula, recovery umoya 2600 waqala ukwahlula.I-elastic coefficient yi-466, 480MPa.Amandla okuqina yi-171.5MPa.Amandla oxinzelelo yi-1029MPa.I-coefficient yokwandiswa komgca ngu (25~ 1000)5.010 ~ 6/, kunye ne-thermal conductivity (20) yi-59w/(mk).Ukuzinza kweMichiza, ukubilisa kwi-HCI, i-H2SO4, i-HF ayiyi kutshabalalisa.
Ngokweendlela ezahlukeneyo zokusetyenziswa, uxinzelelo lwe-atmospheric sintered silicon carbide yahlulwe yaba yi-abrasive, data refractory, i-deoxidizer, i-silicon carbide yombane njalo njalo.Umxholo we-SiC we-abrasive silicon carbide awuyi kuba ngaphantsi kwe-98%.Iirefractories ezine-silicon carbide zahlulwe zibe: (1) idatha ephuculweyo ephucukileyo ye-silicon carbide, umxholo wayo we-SiC ufana ngqo nokusila i-silicon carbide.(2) Idatha ye-refractory yesibini ye-silicon carbide emnyama, umxholo we-SiC ongaphezulu kwe-90%.(3) Umxholo we-silicon carbide emnyama kunye ne-SiC kwii-refractories ezisezantsi azikho ngaphantsi kwe-83%.Umxholo we-silicon carbide kunye ne-SiC esetyenziswe kwi-deoxidizer ngokuqhelekileyo kufuneka ibe ngaphezu kwe-90%.Nangona kunjalo, i-carbon industrial graphitization furnace insulation, i-silicon carbide content engaphezu kwe-45% yonyango ingasetyenziselwa njenge-steelmaking deoxidizer.I-silicon carbide ye-agent ye-deoxidizing ineentlobo ezimbini zemilo yomgubo kunye nebhloko yokubumba.I-powder deoxidizer emnyama isilicon carbide ngokubanzi inobungakanani besuntswana le-4~0.5 mm kunye ne-0.5~0.1 mm.I-silicon carbide esetyenziswa ngombane ineendidi ezimbini eziphambili.(1) I-silicon carbide eluhlaza esetyenziselwa izinto zokufudumeza zombane ngokuyimfuneko iyafana ne-silicon carbide eluhlaza esetyenziselwa ukugaya.(2) I-silicon carbide yokubanjwa ineemfuno ezikhethekileyo zomsebenzi wombane, ohluke kwi-silicon carbide emnyama yokugaya idatha ye-refractory.
Ukusetyenziswa koxinzelelo lwe-atmospheric sintered silicon carbide
Uxinzelelo lwe-atmospheric sintered silicon carbide iimveliso zinemisebenzi ekhethekileyo efana nokumelana nobushushu obuphezulu, ukumelana nokunxiba, ukumelana nobushushu, ukumelana nomlilo, ukuxhathisa kwimitha, umbane ogqwesileyo kunye ne-thermal conductivity, njl., kwaye ziye zasetyenziswa ngokubanzi kumasebe ahlukeneyo oqoqosho lwelizwe.E-China, i-silicon carbide eluhlaza isetyenziswa kakhulu njenge-abrasive.I-silicon carbide emnyama isetyenziselwa ukwenza amatye okusila, ahlala esetyenziselwa ukusika kunye nokusila izinto ezinamandla aphantsi, njengeglasi, iiseramics, ilitye, iirefractories, kunye nokucola iindawo zentsimbi kunye nezixhobo zetsimbi ezingenayo i-ferrous.Ukusila okwenziwe ngesilicon carbide eluhlaza kusetyenziswa ikakhulu ukucola i-carbide ene-cemented, i-titanium alloy, iglasi yokukhanya, kunye nokusila i-cylinder liner kunye nezixhobo zentsimbi ezinesantya esiphezulu.I-Cubic silicon carbide abrasives isetyenziselwa kuphela ukugaya okuchanekileyo kweebheringi ezincinci.Ukumelana nokunxiba kwee-impellers ze-turbine kunokuphuculwa kakhulu ngokusebenzisa i-SIC powder kubo nge-electroplating.Ukusebenzisa uxinzelelo lomatshini ukutyhala i-cubic SiC200 mill kunye ne-W28 micro-powder kwindonga ye-cylinder ye-injini yokutsha yangaphakathi, ubomi be-cylinder bunokuba ngaphezu kokuphindwe kabini.
Ixesha lokuposa: Oct-11-2023