Uhlobo olusha lwezitini eziphefumula lusiza isithando somlilo ukususa ukungcola

Ukuba khona kwe-gas inclusions kanye ne-oxide inclusions ku-castings yisizathu esiyinhloko sezakhiwo ezimbi zemishini kanye nokumelana nokugqwala kwe-castings, futhi okuqukethwe kokufakwa okuhlukahlukene ekubunjweni kuhlobene eduze nokuhlanzeka kwensimbi encibilikisiwe esithandweni sokufakelwa. Yize i-AOD (i-Argon Oxygen Decarburization Refining Furnace), i-VOD (I-Vacuum Oxygen Blown Decarburization Refining Furnace) neminye imishini yokucwenga inemiphumela emihle, izindleko zokutshala imali nezokusebenza ziphakeme, futhi azilifanele inani elikhulu lezincane nezincane izisekelo. Njengamanje, iningi lenqubo yokukhiqiza ukusakazwa kumathanga we-induction isebenzisa indlela yokulungisa, engenamsebenzi wokucwenga futhi engakwazi ukususa ukufakwa okuhlukahlukene okulethwe ngesikhathi senqubo yokulungisa. Izinga lensimbi encibilikisiwe alikwazi ukuqinisekiswa, okuholela ekukhiqizeni okuphansi okuphansi kanye nebanga eliphansi. Indlela yokunciphisa okuqukethwe kokufakwa okuhlukahlukene okukhiqizwa kwinqubo yokuncibilika kwensimbi engagqwali ngokusebenza kahle okuphezulu kanye nezindleko eziphansi sekuyinkinga ephuthumayo kumabhizinisi asebenzisa izithando zokungeniswa ukuze akhiqize ama-castings.

Ukufakwa kwezitini zokungenisa umoya. Ukufakwa kwesitini esiphefumulayo esithandweni sokufakelwa kulula kakhulu. Asikho isidingo sokwenza ukuguqulwa okukhulu kwesakhiwo sesithando somlilo sokungeniswa. Imbobo eyisiyingi kuphela enobubanzi obungu-40 mm kuya ku-60 mm ibhobozwa ebhodini le-asbestos noma ibhulokhi elakhiwe ngaphambili ngaphansi kwesithando somlilo ukuze liqondise isitini esiphefumulayo. Ipayipi elivunguza i-argon lingahlonywa i-argon yezimboni yamabhodlela njengomthombo we-argon. Inqubo yokwakhiwa kwesithando somlilo wokungeniswa ngezitini ezivumela umoya iyafana naleyo yesithando somlilo esijwayelekile.

Umbiko wokuhlola wensimbi encibilikisiwe ukhombisa ukuthi okuqukethwe u- [O], [N] kanye no- [H] ensimbi encibilikile kuncishiswe kakhulu lapho kusetshenziswa inqubo yokushaywa kwe-argon uma kuqhathaniswa nalokho ngaphandle kokushaywa kwe-argon. Ngesikhathi esifanayo, umbiko wokuhlola uphinde waveza ukuthi okuqukethwe okungenayo i-spherical inclusions ensimbi encibilikisiwe kwakungaphansi kwezinga lokuqamba, futhi okuqukethwe kwe-spherical oxide inclusions kufinyelele izinga le-0.5A. Lo mphumela ukhombisa ukuthi ukusetshenziswa kwenqubo yokushaywa kwe-argon ngezitini eziphefumula esithandweni sokungeniswa kwamvamisa esiphakathi kungathuthukisa ngempumelelo ikhwalithi yensimbi encibilikisiwe futhi ekugcineni kuthuthukise izinga lokuphonswa.