I-silicon ye-carbide cruciblesisixhobo esibalulekileyo sokunyibilikisa kwishishini lesinyithi. Ngenxa yokumelana nobushushu obuphezulu kunye ne-thermal conductivity, isetyenziswa ngokubanzi kwiintlobo ezahlukeneyo zokunyibilikisa isinyithi kunye neekhemikhali. Nangona kunjalo, ukuqinisekisa ukusebenza kakuhle ngexesha lokusetyenziswa, i-silicon carbide crucibles kufuneka ifudunyezwe ngokufanelekileyo.
Amanyathelo okufudumeza kwangaphambili kwi-silicon carbide crucible
I-silicon carbide crucibles idinga ukunakekelwa okukhethekileyo ngexesha lokutshisa kwangaphambili ukukhusela iingxaki ezifana nokwandiswa kwe-thermal, i-detachment ephantsi, i-delamination okanye i-cracking ebangelwa ngumswakama oseleyo. Amanyathelo athile ngala alandelayo:
Ukubhaka kokuqala: Bhaka kwi-oven ngaphandle kokongeza nayiphi na into, kwaye ugcine ubushushu ngaphezu kweeyure ezingama-24. Ngethuba le nkqubo, jikeleza i-crucible rhoqo ukuze uqinisekise ukufudumeza okufanayo kwaye ususe ngokupheleleyo umswakama kwiindonga ze-crucible.
Ubushushu obuthe chu:
Okokuqala tshisa i-crucible kwi-150 ukuya kwi-200 degrees Celsius kwaye ubambe iyure eli-1.
Emva koko, yandisa iqondo lobushushu ngeqondo le-150 ngokukaCelsius ngeyure de kufike ubushushu obuphezulu. Ngethuba le nkqubo, gwema ukushiya iindonga ze-crucible kumaqondo okushisa phakathi kwe-315 kunye ne-650 degrees Celsius ixesha elide, njengoko i-crucible iya ku-oxidize ngokukhawuleza kolu luhlu lweqondo lokushisa, lunciphisa ubomi bayo kunye nokunciphisa ukuqhutyelwa kwayo kwe-thermal.
Unyango lobushushu obuphezulu:
Emva kokuba i-preheating igqityiwe, ngaphandle kokuba i-crucible ibonakaliswe kwindawo enomswakama kwakhona, ayifuni ukufudumeza kwakhona kwaye ingaqhubeka isetyenziswa.
Emva kokuba ukufudumala kugqityiwe, phakamisa ngokukhawuleza ukushisa kwi-850 ~ 950 degrees Celsius, yigcine ishushu isiqingatha seyure ngaphandle kokongeza izinto eziphathekayo, uze upholise kwiqondo lokushisa eliqhelekileyo lokusebenza kwaye uqale ukongeza izinto. Olu nyango lunokwandisa ngokufanelekileyo ubomi benkonzo ye-crucible.
Ezinye iindlela zokulungisa kwangaphambili
Ukongeza kula manyathelo okufudumeza angasentla, ezi ndlela zilandelayo zingasetyenziswa:
Ukushisa kufuphi ne-oil burner: Ukubeka i-crucible ecaleni kwe-oil burner kunokunceda ukususa umswakama.
Ukutshisa amalahle okanye iinkuni: Ukutshisa amalahle okanye iinkuni kwi-crucible kunokunceda ngakumbi ukususa ukufuma.
Ukukhetha ubungakanani obuchanekileyo be-crucible
Imilinganiselo ye-silicon carbide crucible iyahluka ngokuxhomekeke kumenzi kunye nesicelo esithile. Ngoko ke, xa ukhetha, nceda ubhekisele kwiinkcukacha ezithile zemveliso okanye uqhagamshelane nomthengisi ngolwazi oluchanekileyo. Ukukhetha i-crucible efanelekileyo ngokusekelwe kwiimfuno zakho kunokuphucula ukusebenza kakuhle kwemveliso kunye nomgangatho wemveliso.
Ngokulandela iinkqubo ezichanekileyo zokushisa kunye nokucubungula, i-silicon carbide crucibles inokwandisa ukusebenza kwayo kwaye yandise ubomi babo benkonzo, inika isiqinisekiso esithembekileyo kwinkqubo yakho yokuvelisa.
Graphite Crucible User Guide
I-graphite crucibles nayo isetyenziswa ngokubanzi kwiimvavanyo eziphezulu zokushisa kunye nokuveliswa kwemveliso. Ukumelana nobushushu obuphezulu, ukumelana nokugqwala, kunye nokuqhuba kakuhle kwe-thermal kuyenza ilungele imifuniselo emininzi kunye neenkqubo zemveliso. Ukuze kuqinisekiswe ukusebenza kakuhle kunye nobomi benkonzo ende ye-graphite crucible, ezi zigaba zilandelayo kufuneka ziqwalaselwe ngexesha lokusetyenziswa:
Ukubekwa kwesampuli
Isampulu eqinileyo: Ukusasaza ngokulinganayo into yovavanyo okanye imathiriyeli ekrwada kwicrucible yegraphite ukunqanda ukufudumeza kwendawo okanye ukutshiza.
Iisampuli zolwelo: Sebenzisa i-dropper okanye esinye isixhobo se-micro-sampling ukulahla ulwelo kwi-crucible ukuphepha ukutshiza okanye ukungcolisa ngaphandle kwe-crucible.
umsebenzi wokufudumeza
indlela yokufudumeza:
Sebenzisa izixhobo zokufudumeza zombane, ukufudumeza ngemitha ye-infrared okanye ezinye iindlela ezifanelekileyo zokufudumeza ukufudumeza i-graphite crucible.
Kuphephe ukufudumeza ngokuthe ngqo ngedangatye elivulekileyo. Ngenxa yokuba i-graphite ecocekileyo inomgangatho ophezulu we-thermal conductivity, ukufudumeza ngokuthe ngqo ngedangatye elivulekileyo kunokubangela ukuba i-crucible iguqule okanye iqhekeze.
Isantya sokufudumeza:
Gcina iqondo lokufudumeza elifanelekileyo ukuphepha ukonakalisa i-crucible ngenxa yokutshintsha kweqondo lokushisa ngokukhawuleza.
Lungisa indawo kunye namandla esixhobo sokufudumeza ukuqinisekisa ukuba i-crucible ishushu ngokulinganayo.
Ukulumkela
Kuphephe ukudibana ngokuthe ngqo nomlilo: Xa ufudumeza, kunqande ukudibana ngokuthe ngqo nomlilo ukuze ugweme ukushiya amanqaku amnyama phantsi kwe-crucible okanye ubangele omnye umonakalo.
Ulawulo lobushushu: I-Graphite crucible inovakalelo lokutshintsha kweqondo lokushisa, ngoko ke ukushisa kufuneka kulawulwe ngexesha lokusetyenziswa ukuphepha ukukrazuka kwe-crucible ngenxa yokushisa okuphezulu okanye okuphantsi kakhulu.
Ukucoceka kokusingqongileyo kunye nokhuseleko: Gcina indawo engqongileyo icocekile kwaye ugweme umonakalo kwi-graphite crucible ngenxa yempembelelo okanye ukuwa kwiindawo eziphakamileyo.
Inkxaso yedatha yobuchwephesha
I-Thermal conductivity: I-thermal conductivity ye-high-purity crucible graphite crucible imalunga ne-100-300 W / m·K, eyenza ukuba ikwazi ukuhambisa ngokukhawuleza ukushisa kumaqondo aphezulu kunye nokunciphisa umphumo woxinzelelo lweqondo lokushisa kwi-crucible.
Ukushisa okusebenzayo: I-Graphite crucible inokumelana nokushisa okuphezulu okuphezulu, ubushushu obuphezulu bokusebenza bunokufikelela kwi-3000 ° C, kwaye isetyenziswe kakuhle kwi-atmosphere ye-inert.
Ukumelana ne-oxidation: Xa isetyenziswe kumaqondo aphezulu aphezulu emoyeni, umphezulu we-graphite crucible uxhomekeke kwi-oxidation. Amanyathelo okukhusela afana nokusebenzisa i-anti-oxidation coating okanye ukusebenzisa ukukhuselwa kwegesi ye-inert kufuneka kuthathwe.
Ukuthobela ngokuthe ngqo ezi ndlela zingentla kunye nezilumkiso kunokuqinisekisa ukusebenza kakuhle kunye nobomi obude bemibhobho yegraphite kunyei-silicon carbide crucibles, ngaloo ndlela kuphuculwe ukuthembeka kunye nomgangatho weemvavanyo kunye nemveliso.
Ixesha lokuposa: Jul-11-2024