Dizimboni ze-omestic petroleum, amakhemikhali nezinye zamandla zidinga inani elikhulu lensimbi enezinga lokushisa eliphansi ukuze ziklame futhi zikhiqize amathuluzi ahlukahlukene okukhiqiza nokugcina njengegesi ye-petroleum ewuketshezi, i-ammonia ewuketshezi, umoya-mpilo owuketshezi kanye ne-nitrogen ewuketshezi.
NgokoHlelo Lweminyaka Emihlanu lwaseChina lwe-12, ukuthuthukiswa kwamandla e-petrochemical kuzothuthukiswa futhi ukuthuthukiswa kwemithombo kawoyela negesi kuzosheshiswa eminyakeni emihlanu ezayo. Lokhu kuzohlinzeka ngemakethe ebanzi kanye nethuba lokuthuthukiswa kwemboni yokukhiqiza amandla kanye nemishini yokugcina amandla ngaphansi kwezimo zesevisi yezinga lokushisa eliphansi, futhi kuzophinde kugqugquzele ukuthuthukiswaQ355D ithubhu elingunxande elimelana nezinga lokushisa eliphansiizinto zokwakha. Njengoba amapayipi okushisa aphansi adinga ukuthi imikhiqizo ingabi namandla aphezulu kuphela kodwa futhi nokuqina kokushisa okuphezulu nokuphansi, amapayipi aphansi okushisa adinga ukuhlanzeka okuphezulu kwensimbi, futhi ngesilinganiso sendandatho yokushisa, ukuhlanzeka kwensimbi nakho kuphakeme. Q355EIshubhu yesikwele yokushisa ephansi kakhuluiyathuthukiswa futhi yakhelwe. Insimbi ye-billet ingasetshenziswa ngokuqondile njengepayipi lensimbi engenamthungo yesakhiwo sokudlulisa. Inqubo yokukhiqiza ihlanganisa amaphuzu amathathu alandelayo:
(1)Ukuncibilikiswa kwesithando se-arc sikagesi: izinsimbi ezilahliwe nensimbi yengulube zisetshenziswa njengeAma-Raw material, phakathi kwazo i-scrap steel akhawunti ye-60-40% futhi i-akhawunti yensimbi yengulube i-30-40%. Ukusebenzisa izinzuzo ze-alkalinity ephezulu, izinga lokushisa eliphansi kanye ne-iron oxide ephezulu yesithando somlilo se-arc kagesi esezingeni eliphakeme kakhulu, ukunyakaziswa okukhulu kwe-oxygen decarburization ngesibhamu somoya-mpilo osodongeni lwesithando somlilo, kanye nokuncibilikisa amanzi okuqala okwenza insimbi. nge-impedance ephezulu kanye ne-ultra-high power grade arc furnace kagesi, izakhi eziyingozi i-phosphorus, i-hydrogen, i-nitrogen ne-non-metallic inclusions ensimbi encibilikisiwe ingasuswa ngempumelelo. Iphuzu lokugcina ikhabhoni yensimbi encibilikisiwe esithandweni se-arc kagesi <0.02%, i-phosphorus <0.002%; I-deoxidation ejulile yensimbi encibilikisiwe yenziwa ngenqubo yokuthinta isithando somlilo kagesi, futhi ibhola le-A1 ne-carbasil kwengezwa ukwenza i-pre deoxidation.
Okuqukethwe kwe-aluminium ensimbi encibilikisiwe kulawulwa ku-0.09 ~ 1.4%, ukuze okufakiwe kwe-Al203 okwakhiwe ensimbi yokuqala encibilikisiwe kube nesikhathi esanele sokuntanta, kuyilapho okuqukethwe kwe-aluminium kwensimbi ye-tube billet ngemva kokucwengwa kwe-LF, ukwelashwa kwe-VD vacuum nokusakazwa okuqhubekayo. ifinyelela ku-0.020 ~ 0.040%, egwema ukungezwa kwe-Al203 eyenziwe yi-aluminium oxidation kunqubo yokucwenga i-LF. Ipuleti le-nickel elibalelwa ku-25 ~ 30% wesamba sengxubevange yengezwa ku-ladle ukuze kuhlanganiswe; Esimeni lapho okuqukethwe kwekhabhoni kungaphezu kuka-0.02%, okuqukethwe kwekhabhoni yensimbi yezinga lokushisa eliphansi kakhulu ayikwazi ukuhlangabezana nesidingo sika-0.05 ~ 0.08%. Kodwa-ke, ukuze kuncishiswe i-oxidation yensimbi encibilikisiwe, kuyadingeka ukulawula ukushuba kokuvunguza komoya-mpilo wesibhamu se-oxygen esithandweni somlilo ukuze ulawule okuqukethwe kwekhabhoni yensimbi encibilikisiwe ngaphansi kuka-0.02%; Lapho okuqukethwe kwe-phosphorus kulingana no-0.002%, okuqukethwe kwe-phosphorus komkhiqizo kuzofinyelela ngaphezu kuka-0.006%, okuzokwandisa isici esiyingozi se-phosphorus okuqukethwe futhi kuthinte ukuqina kokushisa okuphansi kwensimbi ngenxa ye-dephosphorization ye-phosphorus equkethe i-slag. kusukela ekuthepheni kwesithando somlilo kagesi kanye nokwengezwa kwe-ferroalloy ngesikhathi sokucwengwa kwe-LF. Izinga lokushisa elithephayo lesithando somlilo se-arc likagesi lingu-1650 ~ 1670 ℃, futhi i-eccentric bottom tapping (EBT) isetshenziselwa ukuvimbela i-oxide slag ukuthi ingangeni esithandweni sokucwenga se-LF.
(2)Ngemva kokucwengwa kwe-LF, isiphakeli socingo siphakela intambo yensimbi engu-0.20 ~ 0.25kg/t ye-CA ehlanzekile ukuze iguqule ukungcola futhi yenze okufakwe ensimbi encibilikisiwe kube yindilinga. Ngemuva kokwelashwa kwe-Ca, insimbi encibilikisiwe ishaywa nge-argon ngaphansi kweladi imizuzu engaphezu kwe-18. Amandla okufutha kwe-argon angenza insimbi encibilikisiwe ingavezwa, ukuze okuhlanganisayo okuyindilinga kunsimbi encibilikisiwe kube nesikhathi esanele sokuntanta, kuthuthukise ubumsulwa bensimbi, futhi kunciphise umthelela wokuhlanganisa okuyindilinga ekuqineni komthelela wezinga lokushisa eliphansi. Inani lokuphakelayo lentambo ye-CA emsulwa ingaphansi kwensimbi engu-0.20kg/t, okufakiwe akukwazi ukukhishwa ngokuphelele, futhi inani lokuphakelayo le-Ca wire lingaphezu kwensimbi engu-0.25kg/t, ngokuvamile enyusa izindleko. Ukwengeza, lapho inani lokuphakela le-Ca line likhulu, insimbi encibilikisiwe ibilisa ngamandla, futhi ukuguquguquka kwezinga lensimbi encibilikisiwe kubangela ukuthi insimbi encibilikisiwe imunywe futhi kwenzeke i-oxidation yesibili.
(3)Ukwelashwa kwe-vacuum ye-VD: thumela insimbi encibilikisiwe encibilikisiwe esiteshini se-VD ukuze ihlanzeke, gcina i-vacuum ingaphansi kuka-65pa imizuzu engaphezu kuka-20 kuze kube yilapho i-slag iyeka ukukhihliza amagwebu, vula isembozo se-vacuum, bese uvuthela i-argon phansi kweleyidi ukuze ivuthele i-static. insimbi encibilikisiwe.
Isikhathi sokuthumela: Sep-02-2022
