Kungani amanye ama-vacuum furnace ashisa kakhulu ekhetha ama-graphite electrode njengezinto zokushisa?

Amanye ama-vacuum furnace ashisa kakhulu akhetha ama-electrode e-graphite njengezinto zokushisa ngenxa yezinzuzo zokusebenza okuphelele kwe-graphite ngaphansi kwezimo zokushisa okuphezulu, okwenza kube ukukhetha okuhle kwezinto zokushisa kuma-vacuum furnace. Ukuhlaziywa okukhethekile kungokulandelayo:

1. Ukumelana Nokushisa Okuphezulu: Indawo Yokuncibilika Nokuzinza Kokushisa Kwe-Graphite
   I-Graphite inezinga lokuncibilika elingaba ngu-3,652°C futhi ingasebenza kahle ngaphezu kuka-2,000°C ezindaweni zokuhlanza umoya, kanti eminye imishini ethuthukisiwe ifinyelela ku-2,200°C. Lokhu kumelana nokushisa okuphezulu kuyenza ikwazi ukumelana nezimo zokucubungula ukushisa okukhulu, okwenza ifanelekele izinqubo zokushisa noma zokuguqula isigaba sezinto zobumba ezisebenza kahle kakhulu kanye nezinsimbi eziphikisayo. Ngokuphambene nalokho, izinto zokushisa zensimbi zivame ukuthamba noma ukuwohloka emazingeni okushisa aphezulu, kanti i-graphite igcina amandla ayo okusebenza ngaphansi kuka-2,500°C futhi idlula wonke ama-oxide nezinsimbi ngamandla ku-1,700°C.

2. Ukuzinza Kwamakhemikhali: Ukumelana Nokugqwala Nokushiswa Kwe-Oxidation Ezindaweni Ezisebenzisa I-Vacuum
   Ngaphansi kwezimo ze-vacuum, lapho okuqukethwe kwamagesi akhipha i-oxidation njenge-oxygen kuphansi kakhulu, ukumelana kwe-oxidation kwe-graphite kuthuthuka kakhulu. Ubuso bayo abuthambekele kakhulu ekwakheni izendlalelo ze-oxide, okuvimbela ukuwohloka kokusebenza noma ukuguguleka kwe-electrode okubangelwa yi-oxidation. Ngaphezu kwalokho, i-graphite ibonisa ukumelana okuphezulu kokugqwala kuma-acid amaningi, ama-alkali, nosawoti, okwenza ifaneleke ukucubungula izinto ezihlanzekile kakhulu (isb., ama-semiconductor, izinto ezisebenza ngomagnetic) kanye nokuvimbela ukungcola noma izinguquko zokwakheka kwamakhemikhali.

3. Ukushisa Okushisayo: Ukushisa Okusebenzayo Nokufanayo Okunokonga Amandla
   I-Graphite iyi-conductor yokushisa enhle kakhulu, isebenza kangcono kunezinye izinto zensimbi ekudluliseleni ukushisa. Ezithandweni ze-vacuum, ama-electrode e-graphite angadlulisela ukushisa ngokushesha ezintweni ezicutshungulwayo, anciphise izikhathi zokushisa futhi athuthukise ukusebenza kahle kokukhiqiza. Okwamanje, i-coefficient yayo ephansi yokwanda kokushisa (izinguquko ezincane zobukhulu ngesikhathi sokushisa nokupholisa) iqinisekisa ukusatshalaliswa kokushisa okufanayo, ngokushintshashintsha kokushisa kwesithando kulawulwa ngaphakathi kuka-±5°C, okugwema ukuqhekeka kwezinto noma ukuguquka ngenxa yokushisa ngokweqile noma ukupholisa okungalingani. Ngaphezu kwalokho, izakhiwo zokushisa ze-graphite zinciphisa ukulahleka kokushisa, zinciphise ukusetshenziswa kwamandla.

4. Ukumelana Nokushaqeka Okushisayo: Ukuzivumelanisa Nemijikelezo Yokushisa Nokupholisa Okusheshayo
   I-Graphite ikhombisa ukumelana okukhulu kokushaqeka kokushisa, imelana nemijikelezo yokushisa nokupholisa okusheshayo njalo ngaphandle kokuqhekeka noma ukuguquka. Lesi sici siyenza ifaneleke ezinqubweni ezidinga izinguquko zokushisa okusheshayo, njengokwelashwa kwe-graphitization yokushisa okuphezulu, ngenkathi yandisa impilo yesevisi ye-electrode.

5. Izinzuzo Zesakhiwo Nokucubungula: Ukuguquguquka Nokuguquguquka Komklamo
   Ama-electrode e-graphite angashintshwa ngokunemba kusetshenziswa amasu e-CNC anokunemba okuphezulu abe yizimo ezahlukahlukene (isb., izinduku zokushisa, imibhede yesithando somlilo, iziqondiso) ukuze kuhlangatshezwane nezinhlobo ezahlukene zesithando somlilo kanye nezidingo zenqubo. Ukuguquguquka kwawo kanye nokulula kokufakwa kunciphisa ubunzima bomklamo wemishini. Ngaphezu kwalokho, ama-electrode e-graphite angasebenza imisebenzi eminingi njengezinto zokushisa, izendlalelo zokushisa, kanye nezakhiwo zokusekela, okwenza kube lula ukwakhiwa kwangaphakathi kwezithando zomlilo.

6. Umphumela Wokuhlanzwa Kwendawo Yokuhlanza I-Vacuum: Umklamo Wesistimu Olula
   Ezithandweni ze-vacuum, i-trace carbon ekhishwa kuma-electrode e-graphite isabela nomoya-mpilo osele kanye nomhwamuko wamanzi esigabeni segesi, okuhlinzeka ngomphumela wokuhlanza. Lokhu kunciphisa ubunzima kanye nezindleko zesistimu ye-vacuum, inzuzo ebalulekile ezinqubweni ezidinga izimo ze-vacuum eziphezulu kakhulu.

7. Izinzuzo Zezomnotho Nezemvelo: Ukusebenza Kahle Kwezindleko Zesikhathi Eside Nokuthobela Imithetho
   Nakuba izindleko zokuqala zama-electrode e-graphite zingase zibe phezulu kunezinye izindlela zensimbi, impilo yazo yesevisi ende, izidingo zokunakekelwa eziphansi, kanye nokusebenza okusebenzisa amandla kahle kunciphisa kakhulu izindleko zokusebenza zesikhathi eside. Ngaphezu kwalokho, i-graphite ayisebenzi ngemisebe futhi izinzile emazingeni okushisa aphezulu, ihlangabezana nemithetho yemvelo futhi igwema ukukhishwa kwegesi okuyingozi.