Iipropati ze-Ductile Cast Iron Mechanical

I-Ductile cast iron, ebizwa ngokuba yi-nodular iron or spheroidal graphite (SG) cast iron cast, ayisiyonto enye kodwa iyinxalenye yeqela lezinto ezinokuthi ziveliswe ukuze zibe noluhlu olubanzi lweepropati ngokulawulwa kwe-microstructure. I-nodular cast iron ifumana i-graphite ye-nodular ngokusebenzisa i-spheroidization kunye nonyango lwe-inoculation, oluphucula ngokufanelekileyo iimpawu ze-mechanical of iron cast, ngokukodwa i-plastiki kunye nokuqina, ukuze ufumane amandla aphezulu kune-carbon steel. Intsimbi yentsimbi ye-nodular yintsimbi yentsimbi ephezulu. Iimpawu zayo ezibanzi zisondele kwintsimbi. Ngokusekwe kwiipropati zayo ezigqwesileyo, i-iron ductile isetyenziswe ngempumelelo ukuphosa amacandelo anamandla anzima, amandla, ukuqina kunye nokumelana nokunxiba. I-Nodular cast iron iye yaphuhliswa ngokukhawuleza ibe yintsimbi yentsimbi yesibini kuphela kwintsimbi engwevu kwaye isetyenziswa ngokubanzi. Into ebizwa ngokuthi "intsimbi yokutshintsha intsimbi" ibhekisela kwi-iron ductile. Intsimbi erhuqwayo isoloko isetyenziselwa ukuvelisa iinxalenye zeecrankshafts kunye neecamshaft zeemoto, iitrektara, kunye neenjini zokutsha zangaphakathi, kunye neevalvu zoxinzelelo oluphakathi koomatshini ngokubanzi.

Uphawu oluqhelekileyo lwe-ductile cast iron yimilo yegraphite. Kwiintsimbi ze-ductile, i-graphite ikwimo ye-nodules kunokuba i-flakes njengoko i-iron engwevu. Imilo ebukhali yeeflakes zegraphite zenza amanqaku oxinzelelo ngaphakathi kwe-matrix yesinyithi kunye nokumila okungqukuva kwamaqhuqhuva angaphantsi kangako, ngaloo ndlela kuthintela ukudalwa kweentanda kunye nokubonelela nge-ductility eyandisiweyo enika i-alloy igama layo. Ukubunjwa kwamaqhuqhuva kufezekiswa ngokudityaniswa kwezinto ezinoduli, ngokuqhelekileyo i-magnesium (qaphela i-magnesium ibilisa kwi-1100 ° C kunye ne-iron iyancibilika kwi-1500 ° C) kwaye, ngokuncinci ngoku, i-cerium (ngokuqhelekileyo ikwimo ye-Mischmetal). I-Tellurium nayo isetyenzisiwe. I-Yttrium, ehlala iyinxalenye ye-Misch metal, nayo ifundwe njenge-nodulizer enokwenzeka.