Kwimveliso ye-Ductile Iron (ekwabizwa ngokuba yi-Ductile Iron), ukusetyenziswa kwee-carburizers ezikumgangatho ophezulu kubaluleke kakhulu ekufezekiseni iimpawu ezinqwenelekayo zemveliso yokugqibela.I-recarburizer esetyenziswa ngokuqhelekileyoigraphite petroleum coke (GPC), eyenziwe kwi-petroleum coke ngokusebenzisa inkqubo yokufudumala yobushushu obuphezulu.

Xa ukhetha i-recarburiser yokuvelisa i-iron ductile, izinto ezininzi kufuneka ziqwalaselwe.Eyona nto ibaluleke kakhulu kule miba yi-carbon content, umxholo wesulfure, umxholo womlotha, umxholo wezinto eziguqukayo, umxholo we-nitrogen kunye nomxholo we-hydrogen.

Umxholo wekhabhoni esisigxina yipesenti yekhabhoni eseleyo kwi-graphite petroleum coke emva kokuba zonke ii-volatile kunye nomlotha zitshisiwe.Okukhona uphezulu isiqulatho sekhabhoni esisigxina, kokukhona i-recarburiser ingcono ekunyuseni isiqulatho sekhabhoni kwintsimbi enyibilikisiweyo.i-graphite petroleum coke enomxholo wekhabhoni esisigxina ubuncinane i-98% iyacetyiswa ukuveliswa kwe-iron ductile.

I-sulfure yinto yokungcola okuqhelekileyo kwi-graphite petroleum coke kwaye ubukho bayo bunokuchaphazela kakubi iipropati zokugqibela ze-ductile iron.Ngoko ke, kubalulekile ukukhetha i-graphite petroleum coke kunye nomxholo ophantsi wesulfure (ngokuqhelekileyo ngaphantsi kwe-1%).

Umxholo we-Ash ubuninzi bezinto ezingenakutsha ezikhoyo kwi-graphite petroleum coke.Umxholo omlotha ophezulu udala i-slag kwisithando somlilo, okwandisa iindleko kunye nokunciphisa ukusebenza kakuhle.Yingakho kucetyiswa ukuba usebenzise i-graphite petroleum coke kunye nomxholo we-ash ngaphantsi kwe-0.5%.

Izinto eziguquguqukayo ziquka naziphi na iigesi okanye ulwelo olukhutshwayo xa i-graphite petroleum coke ifudunyezwa.Umxholo ophakamileyo oguquguqukayo ucebisa ukuba i-graphite petroleum coke inokukhupha iigesi ezininzi, ezinokuthi zenze i-porosity kwimveliso yokugqibela.Ngaloo ndlela, i-graphite petroleum coke enomxholo oguquguqukayo ongaphantsi kwe-1.5% kufuneka isetyenziswe.

Umxholo we-nitrojeni ungomnye ukungcola kwi-graphite petroleum coke ekufuneka igcinwe iphantsi njengoko inokuchaphazela iipropati zomatshini we-nodular cast iron.i-graphite petroleum coke ene-nitrogen engaphantsi kwe-1.5% ilungele ukuveliswa kwentsimbi ye-nodular cast.

Ekugqibeleni, umxholo we-hydrogen yenye into ekufuneka iqwalaselwe xa ukhetha i-carbon raiser ye-nodular cast iron production.Amanqanaba aphezulu e-hydrogen anokukhokelela ekwandeni kwe-brittleness kunye nokunciphisa i-ductility.i-graphite petroleum coke enomxholo we-hydrogen ongaphantsi kwe-0.5% ikhethwayo.

Isishwankathelo, ukuveliswa kwentsimbi ye-nodular kudinga umgangatho ophezulu we-carbon raiser ohlangabezana neemfuno ezithile zomxholo wekhabhoni esisigxina, umxholo wesulfure, umxholo womlotha, into eguqukayo, umxholo we-nitrogen, kunye nomxholo we-hydrogen.Ukusetyenziswa kwe-graphite petroleum coke ehlangabezana nezi mfuno kuya kuqinisekisa ukuveliswa kwensimbi ephezulu ye-nodular cast, eyaziwa ngokuba yi-Ductil Iron okanye i-SG iron.