Ukushisa kwangaphambili kunye nokomisa indlela yonyango ye-buffer emodareyithiweyo yamaza e-aluminium yokunyibilikisa iziko

Ngaphambi kokusebenzisa i-crucible entsha okokuqala, kungcono ukutshisa i-graphite crucible kwiiyure ezingama-4-24.

Ngaphambi kokusebenzisa i-crucible entsha, ukuba kunokwenzeka, faka iinkuni kwi-crucible ukutshisa iiyure ezingama-2-4, eziluncedo kwi-dehumidification ye-crucible.

1 Ukufudumeza kunye nokufudumeza kwangaphambili kwisithando somlilo esitsha sihamba ngolu hlobo lulandelayo:

Ukuqhekeka kubonakala kwi-crucible, ngokukodwa phambi kwama-degrees angama-200. Ingqwalasela ekhethekileyo kufuneka ihlawulwe ukuba ungangxami, kodwa ngokukhawuleza ukunyusa izinga lokushisa kunye namandla aphakathi. I-crucible inenkqubo yokulungelelanisa. Gcina iqondo lokushisa kwi-150 ° C ubuncinane kwiiyure ezingama-2, susa ngokucokisekileyo umphunga wamanzi, ukoma ngokukhawuleza okanye ukufudumala kumandla aphezulu, okuya kubangela ukuba i-crucible iqhume ngokulula. I-crucible iqhuba ukushisa ngokukhawuleza, kwaye umsebenzi wokufudumeza uyenziwa. Xa i-crucible ifikelela kuma-degrees angama-300, inokufudumala ngokukhawuleza, kwaye ayiyi kuqhuma.

A. Iqondo lokushisa kwegumbi liphakama ukuya kwi-100 ° C, ukufudumeza kwangoku ngu-15A, ibhodwe elingenanto lifudumala ukuya kwi-100 ° C ngaphandle kwesivalo, kwaye izinga lokushisa ligcinwa rhoqo kwi-2h;

B. Phakamisa ubushushu ukusuka kwi-100 ℃ ukuya kwi-200 ℃, ukufudumeza kwangoku ngu-20A, imbiza engenanto ishushu kwi-200℃ ngaphandle kwesivalo, kwaye iqondo lokushisa lihlala lihlala kwi-2h;

C. Phakamisa i-200 ℃ ukuya kwi-300 ℃, ukufudumeza kwangoku i-30A, i-crucible engenanto ishushu kwi-300 ℃ ngaphandle kwesivalo, ukushisa okuqhubekayo kwe-1h;

D. Phakamisa iqondo lokushisa ukusuka kwi-300 ° C ukuya kwi-800 ° C, ukufudumala kumthwalo ogcweleyo, gubungela i-crucible engenanto kwaye ushushu ukuya kwi-800 ° C, gcina ubushushu be-1h;

Ngeli xesha, beka i-aluminiyam emincinci eyomileyo, kwaye ngokukhawuleza wongeza i-ingots ye-aluminium kunye nesiqingatha sembiza yamanzi e-aluminiyam. Ubushushu obungentla bubhekisa kubushushu besithando somlilo (ngaphakathi kwesithando somlilo).

Qaphela: Izinga lokufudumeza ukuya kuthi ga kwi-400℃/yure. Ukufudumala kuthetha ukuba i-crucible kufuneka ingalayishwa ide ibe bomvu, kwaye i-crucible kufuneka yome.

2 Emva kokumisa isithando somlilo, gcoba isuphu ngokucocekileyo kangangoko kunokwenzeka, ugqume isigqubuthelo somlilo, kwaye uvale iminyango. Ukugcina ubushushu obushiyekileyo.

3 Emva kokumisa isithando somlilo, xa usebenzisa i-crucible kwakhona, jonga le nkqubo yokubhaka ilandelayo.

Ukuba isithando somlilo sivaliwe ngeentsuku ezi-1-3, cinezela i-ABC yokutshisa i-preheating ukuze ihlale ingatshintshi, kwaye ishushu i-crucible de i-crucible ibe bomvu, kwaye wongeze into eyomileyo ye-aluminium.

Ukuba isithando somlilo sivaliwe ngaphezu kweentsuku ezi-7, sebenza njenge-preheating yokuqala yembiza entsha.

4 Xa i-crucible entsha ivulwa ukuba ihlolwe kwaye ingasetyenziswa, kufuneka ipakishwe kwitywina layo lokuqala kwaye akufanele ibekwe kwi-buffered modulation wave i-aluminiyam yokunyibilikisa iziko ukunqanda ukufuma. Ukuba i-crucible imanzi ngexesha lokusetyenziswa, i-crucible kufuneka ihanjiswe ngesithando somlilo ukuba ifudumale kwiiyure ezingama-8-24 , Kwaye ubeke ukhuni kwi-crucible ukutshisa iiyure ezingama-2-4, kwaye emva koko ulungise ngokwendlela engentla.