Ukuphucula uKhuseleko lwezoShishino kunye nokuSebenza ngokuLungileyo kweeCrucibles zeGraphite

Kwiminyaka yakutshanje, ukusetyenziswa kweiicrucibles zegraphitekwimizi-mveliso yokunyibilikiswa kwesinyithi kunye nokuphosa kuye kwanda ngokuthe ngcembe, ngenxa yoyilo olusekwe kwi-ceramic enika ukuxhathisa okukhethekileyo kobushushu obuphezulu. Nangona kunjalo, ekusebenziseni okubonakalayo, abaninzi bayayihoya inkqubo ebalulekileyo yokutshisa i-graphite crucibles emitsha, ekhokelela kumngcipheko onokuthi ube nobungozi kukhuseleko lomntu kunye nepropathi ngenxa yokuqhekeka kwe-crucible. Ukwandisa inzuzo ye-graphite crucibles, sinikezela ngeengcebiso ezisekelwe kwisayensi yokusetyenziswa kwazo ngokufanelekileyo, ukuqinisekisa ukuba zombini imveliso esebenzayo kunye nokhuseleko lwamashishini.

Iimpawu zeGraphite Crucibles

Iicrucibles zegraphite zidlala indima ebalulekileyo ekunyibilikiseni isinyithi kunye nokuphosa ngenxa ye-thermal conductivity ebalaseleyo. Ngelixa babonisa ukuhanjiswa kwe-thermal engcono xa kuthelekiswa ne-silicon carbide crucibles, banokuchaphazeleka kwi-oxidation kwaye banezinga eliphezulu lokuphuka. Ukujongana nale miba, kubalulekile ukusebenzisa inkqubo yokufudumeza kwangaphambili eyamkelekileyo ngokwenzululwazi.

Izikhokelo zokufudumeza

1. Ukubekwa kufuphi ne-Oil Furnace for Preheating: Beka i-crucible kufuphi nesithando somlilo kwiiyure ze-4-5 ngaphambi kokusetyenziswa kokuqala. Le nkqubo yokufudumeza kwangaphambili inceda ekunciphiseni umphezulu, ukunyusa ukuzinza kwe-crucible.
2. Ukutshiswa kwamalahle okanye iinkuni: Beka amalahle okanye iinkuni ngaphakathi kwisitya esivuzayo kwaye utshise malunga neeyure ezine. Eli nyathelo linceda ekunciphiseni kwaye liphucule ukuxhathisa ubushushu be-crucible.
3. I-Ramp-up ye-Furnace Temperature Ramp-up: Ngexesha lokuqala lokufudumeza, ngokuthe ngcembe ukwandisa ubushushu kwisithando somlilo ngokusekwe kula manyathelo alandelayo obushushu ukuqinisekisa ukuzinza kunye nobomi obude be-crucible:
   • 0°C ukuya kuma-200°C: Ukufudumeza kancinane iiyure ezi-4 (ioyile) / umbane
   • 0°C ukuya kuma-300°C: Ukufudumeza kancinane ngeyure enye (yombane)
   • 200°C ukuya kuma-300°C: Ukufudumeza kancinane iiyure ezi-4 (iziko)
   • 300°C ukuya kuma-800°C: Ukufudumeza kancinane iiyure ezi-4 (iziko)
   • 300°C ukuya kuma-400°C: Ukufudumeza kancinane iiyure ezi-4
   • I-400 ° C ukuya kwi-600 ° C: Ukufudumala ngokukhawuleza, ukugcina iiyure ze-2
4. I-Post Shutdown Reheating: Emva kokuvalwa, ixesha lokufudumeza ioli kunye neziko lombane lilandelayo:
   • 0°C ukuya kuma-300°C: Ukufudumeza kancinane ngeyure enye
   • 300°C ukuya ku-600°C: Ukufudumeza kancinane iiyure ezi-4
   • Ngaphezu kwama-600°C: Ukufudumeza okukhawulezayo ukuya kubushushu obufunekayo

Izikhokelo zokuvala

• Kwiziko zombane, kuyacetyiswa ukuba kugcinwe ukugquma okuqhubekayo xa ungasebenzi, kunye neqondo lokushisa elibekwe malunga ne-600 ° C ukukhusela ukupholisa ngokukhawuleza. Ukuba ukugquma akunakwenzeka, khupha izinto ezivela kwi-crucible ukunciphisa umxholo oseleyo.
• Kwiziko leoli, emva kokuvalwa, qinisekisa ukuba ukhupha izixhobo kangangoko kunokwenzeka. Vala isiciko somlilo kunye namazibuko okungenisa umoya ukugcina ubushushu obushiyekileyo kwaye uthintele ukufuma okuphambanisayo.

Ngokuthobela ezi zikhokelo zokufudumeza kwangaphambili ezisekelwe ngokwesayensi kunye nezilumkiso zokuvala, ukusebenza ngokufanelekileyo kwe-graphite crucibles kwimveliso yamashishini kunokuqinisekiswa, kwangaxeshanye kuphuculwe ukusebenza kakuhle kwemveliso kunye nokukhusela ukhuseleko lwamashishini. Masizibophelele ngokudibeneyo ekuyilweni kweteknoloji ukuqhuba inkqubela kushishino.