Kutheni ezinye ii-vacuum heater ezishushu kakhulu zikhetha ii-graphite electrodes njengezinto zokufudumeza?

Ezinye ii-vacuum heater ezinobushushu obuphezulu zikhetha ii-electrode ze-graphite njengezinto zokufudumeza ngenxa yeenzuzo zokusebenza ngokupheleleyo kwe-graphite phantsi kweemeko zobushushu obuphezulu, nto leyo eyenza ukuba ibe lolona khetho lufanelekileyo lwezinto zokufudumeza kwii-vacuum heater. Uhlalutyo oluthile lulandelayo:

1. Ukumelana nobushushu obuphezulu: Indawo yokunyibilika kunye nokuzinza kobushushu beGraphite
   I-Graphite inendawo yokunyibilika emalunga ne-3,652°C kwaye ingasebenza ngokuzinzileyo ngaphezulu kwe-2,000°C kwiindawo zomoya, kunye nezixhobo ezithile eziphambili ezifikelela kwi-2,200°C. Olu xhathiso lobushushu obuphezulu luyenza ikwazi ukumelana neemeko ezinzima zokucubungula ubushushu, nto leyo eyenza ifaneleke kwiinkqubo zokusila okanye zokuguqula isigaba se-ceramics ezisebenza kakhulu kunye neentsimbi ezichaseneyo. Ngokwahlukileyo koko, izinto zokufudumeza zesinyithi zihlala zithamba okanye ziguquguquka kubushushu obuphezulu, ngelixa i-graphite igcina amandla ayo oomatshini angaphantsi kwe-2,500°C kwaye ide idlule zonke ii-oxides kunye neentsimbi ngamandla kwi-1,700°C.

2. Uzinzo lweeKhemikhali: Ukugqwala kunye nokuxhathisa i-Oxidation kwiindawo zokukhupha umoya
   Phantsi kweemeko ze-vacuum, apho umxholo weegesi ezikhupha i-oxidation ezifana ne-oxygen uphantsi kakhulu, ukumelana ne-oxidation ye-graphite kuphucuka kakhulu. Umphezulu wayo awuthambekeli kakhulu ekwenzeni iileya ze-oxide, nto leyo ethintela ukuwohloka kokusebenza okanye ukuguguleka kwe-electrode okubangelwa yi-oxidation. Ukongeza, i-graphite ibonakalisa ukumelana nokugqwala okuphezulu kwii-asidi ezininzi, ii-alkalis, kunye neetyuwa, nto leyo eyenza ukuba ifaneleke ukucubungula izinto ezicocekileyo kakhulu (umz., ii-semiconductors, izinto zemagnethi) kwaye ithintele ungcoliseko okanye utshintsho kwimilo yeekhemikhali.

3. Ukuqhuba Ubushushu: Ukufudumeza Okufanelekileyo Nokufanayo Okunokonga Amandla
   I-Graphite yi-conductor ebalaseleyo yobushushu, iphumelela kakhulu kwizinto ezininzi zesinyithi ekudluliseleni ubushushu. Kwii-oven ze-vacuum, ii-electrode ze-graphite zinokudlulisela ubushushu ngokukhawuleza kwizinto ezicutshungulwayo, zinciphisa amaxesha okufudumeza kwaye ziphucule ukusebenza kakuhle kwemveliso. Okwangoku, i-coefficient yayo ephantsi yokwandiswa kobushushu (utshintsho oluncinci lobukhulu ngexesha lokufudumeza nokupholisa) iqinisekisa ukusasazwa kobushushu obufanayo, kunye nokutshintsha kobushushu besithando kulawulwa ngaphakathi kwe-±5°C, kuthintela ukuqhekeka kwezinto okanye ukuguqulwa ngenxa yokushisa kakhulu kwendawo okanye ukupholisa okungalinganiyo. Ngaphezu koko, iipropati zokukhusela ubushushu be-graphite zinciphisa ukulahleka kobushushu, zinciphisa ukusetyenziswa kwamandla.

4. Ukumelana Nokushukuma Kobushushu: Ukuziqhelanisa Nemijikelo Yokufudumeza Nokuphola Okukhawulezileyo
   I-Graphite ibonakalisa ukumelana okumangalisayo nokutsha kobushushu, imelana nemijikelo yokufudumeza nokupholisa ngokukhawuleza rhoqo ngaphandle kokuqhekeka okanye ukuguquka. Le mpawu iyenza ifaneleke kwiinkqubo ezifuna utshintsho olukhawulezileyo lobushushu, njengonyango lwe-graphitization yobushushu obuphezulu, ngelixa yandisa ubomi benkonzo ye-electrode.

5. Iingenelo zeSakhiwo kunye nokuCwangcisa: Ukuguquguquka kunye nokuguquguquka koyilo
   Ii-electrode zegrafiti zingakhiwa ngomatshini ngokuchanekileyo kusetyenziswa iindlela ze-CNC ezichanekileyo kakhulu zibe ziimo ezahlukeneyo (umz., iintonga zokufudumeza, iibhedi ze-furnace, izikhokelo) ukuze zilungele iintlobo ezahlukeneyo ze-furnace kunye neemfuno zenkqubo. Ukuguquguquka kwazo kunye nokulula kokufakela kunciphisa ubunzima boyilo lwezixhobo. Ukongeza, ii-electrode zegrafiti zinokusebenza imisebenzi emininzi njengezinto zokufudumeza, iileya zokuthintela ubushushu, kunye nezakhiwo ezixhasayo, okwenza kube lula ukwakhiwa kwangaphakathi kwee-furnace ze-vacuum.

6. Isiphumo sokuCoca iNdawo yokuVutha: Uyilo lweNkqubo oluLula
   Kwii-vacuum heater, i-trace carbon ekhutshwa kwi-graphite electrodes isabela kwi-residue oxygen kunye nomphunga wamanzi kwi-gas phase, nto leyo enika isiphumo sokucoca. Oku kunciphisa ubunzima kunye neendleko ze-vacuum system, inzuzo ebalulekileyo kwiinkqubo ezifuna iimeko ze-vacuum eziphezulu kakhulu.

7. Iingenelo zezoQoqosho nezeNdalo: Ukusebenza kakuhle kweendleko kunye nokuthobela imithetho ixesha elide
   Nangona ixabiso lokuqala lee-electrode ze-graphite linokuba phezulu kunezinye iindlela zesinyithi, ubomi bazo benkonzo ende, iimfuno eziphantsi zokugcinwa, kunye nokusebenza ngendlela eyonga amandla kunciphisa kakhulu iindleko zokusebenza kwexesha elide. Ngaphezu koko, i-graphite ayisebenzisi imitha kwaye izinzile kumaqondo obushushu aphezulu, ihlangabezana nemigaqo yokusingqongileyo kwaye ithintela ukukhutshwa komoya okuyingozi.