DIzimboni zikaphethiloli zasekhaya, amakhemikhali kanye nezinye izimboni zamandla zidinga inani elikhulu lensimbi eshisa kakhulu ukuze ziklame futhi zikhiqize imishini ehlukahlukene yokukhiqiza nokugcina izinto ezifana negesi kaphethiloli encibilikisiwe, i-ammonia ewuketshezi, i-oxygen ewuketshezi kanye ne-nitrogen ewuketshezi.
Ngokusho koHlelo Lweminyaka Emihlanu Lwe-12 lwaseShayina, ukuthuthukiswa kwamandla kaphethiloli kuzothuthukiswa futhi ukuthuthukiswa kwezinsiza zikawoyela negesi kuzosheshiswa eminyakeni emihlanu ezayo. Lokhu kuzohlinzeka ngethuba elikhulu lemakethe kanye nentuthuko embonini yokukhiqiza nokugcina imishini yamandla ngaphansi kwezimo zesevisi eziphansi, futhi kuzophinde kukhuthaze ukuthuthukiswa kweIshubhu elingunxande elingamelana nokushisa okuphansi le-Q355Dizinto zokwakha. Njengoba amapayipi anokushisa okuphansi edinga imikhiqizo ukuthi ingagcini nje ngokuba namandla aphezulu kodwa futhi ibe nokuqina kokushisa okuphezulu nokuphansi, amapayipi anokushisa okuphansi adinga ukuhlanzeka okuphezulu kwensimbi, futhi ngesilinganiso sendandatho yokushisa, ukuhlanzeka kwensimbi nakho kuphakeme. Q355Eishubhu lesikwele esinokushisa okuphansi kakhuluyathuthukiswa futhi yaklanywa. Insimbi ye-billet ingasetshenziswa ngqo njengepayipi lensimbi elingenamthungo lokudlulisa isakhiwo. Inqubo yokukhiqiza ifaka amaphuzu amathathu alandelayo:
(1)Ukuncibilikisa isithando sikagesi se-arc: insimbi eqoshiwe kanye nensimbi yengulube kusetshenziswa njengeAma-Raw material, phakathi kwazo insimbi eqoshiwe ebalelwa ku-60-40% kanye nensimbi yengulube ebalelwa ku-30-40%. Sisebenzisa izinzuzo ze-alkalinity ephezulu, izinga lokushisa eliphansi kanye ne-iron oxide ephezulu yesithando somlilo se-arc kagesi se-ultra-high power grade, ukuxutshwa okukhulu kwe-oxygen decarburization yi-bundle oxygen gun odongeni lwesithando, kanye nokuncibilikisa amanzi okuqala okwenza insimbi nge-impedance ephezulu kanye nesithando somlilo se-arc kagesi se-ultra-high power grade, izakhi eziyingozi i-phosphorus, i-hydrogen, i-nitrogen kanye nokufakwa okungeyona insimbi ensimbini encibilikisiwe kungasuswa ngempumelelo. I-carbon yephuzu lokugcina yensimbi encibilikisiwe esithandweni somlilo se-arc kagesi < 0.02%, i-phosphorus < 0.002%; Ukususwa okujulile kwensimbi encibilikisiwe kwenziwa enkambisweni yokuthepha kwesithando somlilo sikagesi, bese kufakwa ibhola le-A1 kanye ne-carbasil ukuze kwenziwe i-deoxidation ngaphambi kokususwa kwe-oxidation.
Okuqukethwe kwe-aluminium ensimbini encibilikisiwe kulawulwa ku-0.09 ~ 1.4%, ukuze ukufakwa kwe-Al203 okwakhiwe ensimbini encibilikisiwe yokuqala kube nesikhathi esanele sokuntanta, kuyilapho okuqukethwe kwe-aluminium kwensimbi ye-billet ye-tube ngemuva kokucwengisisa kwe-LF, ukwelashwa kwe-vacuum ye-VD kanye nokuphonswa okuqhubekayo kufinyelela ku-0.020 ~ 0.040%, okugwema ukungezwa kwe-Al203 okwakhiwe yi-oxidation ye-aluminium enqubweni yokucwengisisa ye-LF. Ipuleti le-nickel elibalelwa ku-25 ~ 30% we-alloy iyonke lifakwa ku-ladle ukuze lixutshwe; Uma okuqukethwe kwekhabhoni kungaphezu kuka-0.02%, okuqukethwe kwekhabhoni kwensimbi eshisa kakhulu akukwazi ukuhlangabezana nesidingo esingu-0.05 ~ 0.08%. Kodwa-ke, ukuze kuncishiswe i-oxidation yensimbi encibilikisiwe, kuyadingeka ukulawula amandla okuphefumula komoya-mpilo wesibhamu se-oxygen se-oksijini yodonga lwesithando ukulawula okuqukethwe kwekhabhoni kwensimbi encibilikisiwe ngaphansi kuka-0.02%; Uma okuqukethwe yi-phosphorus kufana no-0.002%, okuqukethwe yi-phosphorus komkhiqizo kuzofinyelela ngaphezu kuka-0.006%, okuzokwandisa okuqukethwe yi-phosphorus yento eyingozi futhi kuthinte ukuqina kwensimbi okushisa okuphansi ngenxa yokususwa kwe-slag equkethe i-phosphorus evela ekuthinteni kwesithando sikagesi kanye nokwengezwa kwe-ferroalloy ngesikhathi sokucwenga i-LF. Izinga lokushisa lokucwenga lesithando sikagesi se-arc lingu-1650 ~ 1670 ℃, kanti ukucwenga phansi okungavamile (i-EBT) kusetshenziselwa ukuvimbela i-oxide slag ukuthi ingangeni esithandweni sokucwenga i-LF.
(2)Ngemva kokucwengisisa i-LF, i-wire feeder yondla i-0.20 ~ 0.25kg/t i-CA wire emsulwa yensimbi ukuze isuse ukungcola futhi yenze okufakiwe ensimbini encibilikisiwe kube yindilinga. Ngemva kokwelashwa kwe-Ca, insimbi encibilikisiwe ishaywa nge-argon phansi kwe-ladle isikhathi esingaphezu kwemizuzu eyi-18. Amandla okushaywa kwe-argon angenza insimbi encibilikisiwe ingaveli, ukuze okufakiwe okuyindilinga ensimbini encibilikisiwe kube nesikhathi esanele sokuntanta, kuthuthukiswe ubumsulwa bensimbi, futhi kuncishiswe umthelela wokufakiwe okuyindilinga ekuqineni komthelela ophansi. Inani lokuphakelwa kwentambo ye-CA emsulwa lingaphansi kwensimbi engu-0.20kg/t, okufakiwe akukwazi ukuncishiswa ngokuphelele, kanti inani lokuphakelwa kwentambo ye-Ca lingaphezu kwensimbi engu-0.25kg/t, ngokuvamile okwandisa izindleko. Ngaphezu kwalokho, lapho inani lokuphakelwa komugqa we-Ca likhulu, insimbi encibilikisiwe iyabila ngamandla, futhi ukuguquguquka kwezinga lensimbi encibilikisiwe kubangela ukuthi insimbi encibilikisiwe imuncwe futhi kwenzeka i-oxidation yesibili.
(3)Ukwelashwa nge-vacuum ye-VD: thumela insimbi encibilikisiwe ecwengekile esiteshini se-VD ukuze iphathwe nge-vacuum, gcina i-vacuum ingaphansi kwama-pa angu-65 isikhathi esingaphezu kwemizuzu engama-20 kuze kube yilapho i-slag iyeka ukugqwala, vula isembozo se-vacuum, bese uvuthela i-argon phansi kwe-ladle ukuze ivuthe insimbi encibilikisiwe ingashintshi.
Isikhathi sokuthunyelwe: Septhemba-02-2022
