Ikwiindawo zoshishino ezigqithisileyo—eziphawulwa ngamaqondo obushushu aphezulu, imidiya ebolileyo, kunye nokukhukuliseka kwesinyithi esinyibilikisiweyo—ukhuseleko lwezixhobo oluthembekileyo lubalulekile ekugcineni ukusebenza kakuhle kwemveliso kunye nomgangatho wemveliso.Iityhubhu zokukhusela ze-silicon carbide (NBSiC) ezibotshelelwe yi-nitride, izinto ezidityanisiweyo ezisebenza kakuhle ezenziwe yi-70-80% ye-silicon carbide (SiC) kunye ne-20-30% ye-silicon nitride (Si₃N₄), zibalasele ngeempawu ezibalaseleyo: ukumelana nobushushu obuphezulu ukuya kuthi ga kwi-1450℃ (1650-1750℃ kwiindawo ezithile), ukumelana nokugqwala/ukukrala okuphezulu, ukuzinza okugqwesileyo kokutsha kobushushu, kunye nokuqhuba okuphezulu kobushushu.Apha ngezantsi kukho usetyenziso lwabo oluphambili, olubonisa indlela abasombulula ngayo iingxaki eziphambili kubavelisi behlabathi.
1. Ukhuseleko lweThermocouple: Ukubeka iliso lobushushu obuchanekileyo kwiimeko ezinzima
Ulawulo lobushushu lubalulekile kumgangatho nokhuseleko lwemizi-mveliso, kwaye ii-thermocouples zezona zixhobo ziphambili zokulinganisa ubushushu. Nangona kunjalo, kwii-oven ezishushu kakhulu, kwii-smelters zesinyithi ezingenayo i-ferrous, nakwizixhobo zonyango lobushushu, ii-thermocouples ezingakhuselekanga zonakaliswa lula yi-oxidation, i-corrosion, okanye ukuguguleka kwesinyithi esinyibilikisiweyo—okukhokelela ekufundweni okungachanekanga, ixesha lokungasebenzi elicwangcisiweyo, kunye neendleko eziphezulu zokulungisa.Iityhubhu zokukhusela ze-NBSiC zenzelwe ukukhusela ii-thermocouples, nto leyo ezenza zibe lolona khetho luphezulu kwiimeko zokujonga ubushushu obugqithisileyo.
I-coefficient yazo yokwandisa ubushushu obuphantsi (4.4×10⁻⁶/℃) kunye ne-porosity ephantsi (<1%) ziqinisekisa uzinzo olulinganayo kwaye zithintela ukugqwala okuvela kwiigesi ze-acidic/alkaline kunye neentsimbi ezinyibilikisiweyo. Ngobunzima be-Mohs ~9, ziyamelana nokuguguleka kwezinto ezincinci.Izicelo eziphambili ziquka ii-oven zokwenza intsimbi, ii-oven ze-aluminium melting, kunye nee-oven ze-ceramic, apho iityhubhu ze-NBSiC zandisa ubomi be-thermocouple ngokuphindwe kathathu nangaphezulu xa kuthelekiswa nezinye iindlela zemveli.
2. Ukunyibilikisa nokuphosa isinyithi esingenasinyithi: Ukhuseleko olubalulekileyo lwenkqubo
Amashishini okunyibilikisa/ukwenza i-aluminium, i-copper, kunye ne-zinc ajongene nemingeni emikhulu: ukukhukuliseka kwesinyithi esinyibilikisiweyo kunye nemingcipheko yongcoliseko.Iityhubhu zokukhusela ze-NBSiC zisebenza iindima ezimbini eziphambili apha, zibonelela ngezisombululo ezenzelwe wena.
a. Iityhubhu Ezivaliweyo Zokukhusela Izinto Zokufudumeza
Kwii-ovens ze-aluminium melting, izinto zokufudumeza ze-silicon carbide zibalulekile kodwa zisengozini yokukhukuliseka kwe-aluminium enyibilikisiweyo.Iityhubhu ze-NBSiC ezivaliweyo zisebenza njengomqobo, zisusa izinto zokufudumeza kwisinyithi esinyibilikisiweyo ukuze zandise ubomi bazo kwaye ziphephe ungcoliseko.Ukuqhuba kwazo ubushushu okuphezulu kuqinisekisa ukudluliselwa kobushushu ngokufanelekileyo, kunciphisa ukusetyenziswa kwamandla. Zinokulungiselelwa ububanzi (ukuya kuthi ga kwi-600mm) kunye nobude (ukuya kuthi ga kwi-3000mm), ziyaziqhelanisa noyilo lwee-oven ezahlukeneyo.
b. Izikhuseli ze-Aluminium Wheel Casting
Izinyusi ze-NBSiC ezivulekileyo (iityhubhu zokuphakamisa) zinceda ukuhamba kwe-aluminium enyibilikisiweyo ukusuka kwiifeni ukuya kwiimolds ze-casting ekwenzeni amavili e-aluminium. Nge-modulus ebandayo yokuqhekeka >150MPa kunye nokumelana okuhle kakhulu nobushushu (ngaphandle kwemijikelo eli-100 yobushushu begumbi le-1000℃), ziqinisekisa ukuhamba okuzinzileyo nokuqhubekayo—kunciphisa iziphene ze-cast (iimbobo, i-inclusions) kunye nokuphucula isivuno. Ngokungafaniyo neetyhubhu zesinyithi ezityhidiweyo, i-NBSiC ayingcolisi i-aluminium enyibilikisiweyo, igcina ubumsulwa bemveliso.
3. Ukusetyenziswa kweeKhemikhali kunye neKiln: Ukumelana nokugqwala kwiindawo ezinobundlongondlongo
Iifektri zokucubungula iikhemikhali (ukuqhekeka kwepetroleum, ukuveliswa kwe-asidi/i-alkali) kunye nee-oven ze-ceramic/zeglasi zisebenza ngeegesi ezivuthayo kunye namaqondo obushushu aphezulu.Iityhubhu ze-NBSiC zikhusela ii-sensors kunye nezinto zokufudumeza apha, ngenxa yokumelana nokugqwala okuqhelekileyo.Kwii-reactors eziqhekekayo zepetroleum, ziyamelana nokugqwala kwe-H₂S kunye ne-CO₂ xa kushushu kakhulu; kwii-ovens ze-ceramic/zeglasi, zikhusela ii-thermocouples kwi-oxidative atmospheres kunye nokuguguleka, ziqinisekisa ulawulo oluchanekileyo lobushushu kwiimveliso ezisemgangathweni.
Iityhubhu zokukhusela ze-NBSiC zidibanisa ukusebenza kakuhle kweendleko kunye nokusebenza okungagungqiyo, okubonelela ngobomi benkonzo ende, ukhuseleko lwezixhobo ezibalulekileyo, kunye nokwenza ngokwezifiso. Nokuba kukwi-metallurgy, unyango lobushushu, iikhemikhali, okanye amandla amatsha, zibonelela ngokuthembeka okufunekayo ukuze zihlale zikhuphisana.Qhagamshelana nathi namhlanje ukuze uhlole izisombululo ezenzelwe wena kwimingeni yakho yobushushu obuphezulu kunye nokugqwala.
Ixesha leposi: Disemba-24-2025
