Method for melting steel and scrap steel in ukuchithwa kwesithando somlilo

Ngaphambi kokuba isithando somlilo sokungeniswa sikhokhiswe, okusele esithandweni somlilo kufanele kususwe, futhi umonakalo we-lining yomlilo kufanele uhlolwe. Izingxenye ezilimele kakhulu zibe mnyama ngenxa yokupholisa ngokushesha futhi kufanele zilungiswe. Usayizi wokusanhlamvu wempahla yokulungisa kufanele ube mncane kancane kunento eboshwe ngamafindo, futhi isibopho esisetshenzisiwe kufanele sibe ngaphezulu kancane. Izithando zomlilo ezinkulu ezilimele kakhulu zingafakwa esikhunjeni sensimbi yesithando somlilo ukuze kugcwaliswe amafindo.

Njengoba izinga lokushisa lomlilo we-induction lehla ngokushesha ngemva kokuthepha, kufanele likhokhiswe ngokushesha futhi kufanele ligcwaliswe ngemiphongolo ngangokunokwenzeka. Ukuze kusheshiswe ukuncibilika, izinto kufanele zisakazwe ngokufanele ngokusho kokusabalalisa kwezinga lokushisa esithandweni somlilo. Ukusatshalaliswa kwezinga lokushisa esithandweni sokungeniswa kuboniswa kuMfanekiso 4-25. Ngenxa yomphumela wesikhumba wamanje, indawo ezungezile yekholomu yezinto ezibonakalayo (indawo I) eduze nodonga lwe-volute iyindawo yokushisa ephezulu.

Iphansi naphakathi (I, TT zone) inokuchithwa kokushisa okungekuhle, okuyindawo ephakeme yokushisa, kanti ingxenye engenhla (indawo ye-IV) inomshini ozibuthe omncane nokulahlekelwa ukushisa okukhulu, okuyindawo ephansi yokushisa.

Ukuze wakhe i-slag kusengaphambili, i-1% yezinto ze-slag ngesisindo zingangezwa phansi kwesithando ngaphambi kokushaja, i-lime ne-fluorite yengezwe esithandweni se-alkali, futhi i-glass cullet yengezwa esithandweni somlilo.

Ekuqaleni kokuncibilika, ngoba i-inductance kanye ne-capacitance emgqeni ayikwazi ukufaniswa ngokushesha futhi ngokufanele, okwamanje ayizinzile, ngakho-ke inganikezwa kuphela ngamandla aphansi ngesikhathi esifushane. Uma i-current isizinzile, kufanele ishintshelwe ekudluliseni umthwalo ogcwele. Phakathi nenqubo yokuncibilika, i-capacitor kufanele ihlale ilungiswa ukuze kugcinwe imishini kagesi enesici samandla aphezulu. Ngemuva kokuthi ukushaja kuncibilike ngokuphelele, insimbi encibilikisiwe ishisa kakhulu ngezinga elithile, bese amandla okufaka ancishiswa ngokuvumelana nezidingo zokuncibilika.

Isikhathi esifanele sokuncibilika kufanele silawulwe. Uma isikhathi sokuncibilika sisifushane kakhulu, sizodala ubunzima ekukhetheni i-voltage namandla. Uma kuyinde kakhulu, izokwandisa ukulahlekelwa ukushisa okungenamsebenzi. Indwangu engalungile noma ukugqwala ngokweqile ezintweni zomlilo kuzobangela “ibhuloho” into, okufanele kubhekwane nayo ngesikhathi. “Ibhuloho” livimbela into engancibiliki engxenyeni engenhla ukuba ingaweli ensimbi encibilikisiwe, inyakaze i-yuhua, futhi ukushisa ngokweqile ngaphansi kwensimbi encibilikisiwe kungalimaza kalula ulwelwesi lwesithando somlilo, futhi kuzobangela nokuthi insimbi encibilikisiwe imunce inani elikhulu. kwegesi.

Ngenxa yokunyakaziswa kwe-electromagnetic, maphakathi nensimbi encibilikisiwe iqhuma, futhi i-slag ivame ukugeleza emaphethelweni e-crucible futhi inamathele odongeni lwesithando somlilo. Ngakho-ke, i-slag kufanele yengezwe ngokuqhubekayo ngokuvumelana nezimo zesithando somlilo ngesikhathi sokuncibilika.