Ductile Cast Iron Mechanical Properties

Ductile cast iron, iyo inonziwo nodular iron kana spheroidal graphite (SG) cast iron, haisi chinhu chimwe chete asi chikamu cheboka rezvishandiso zvinogona kugadzirwa kuve nehupamhi hwezvivakwa kuburikidza nekutonga kweiyo microstructure. Nodular cast iron inowana nodular graphite kuburikidza ne spheroidization uye inoculation kurapwa, iyo inobudirira inovandudza ma mechanic properties yesimbi yakakandwa, kunyanya plastiki uye kuoma, kuitira kuti uwane simba rakakwirira kudarika carbon steel. Nodular cast iron isimbi yakakwirira-yakasimba. Hunhu hwayo hwakazara huri pedyo nesimbi. Zvichienderana nehunhu hwayo hwakanaka, iyo ductile iron yakashandiswa zvinobudirira kukanda zvikamu zvemasimba akaoma, simba, kuoma uye kupfeka kuramba. Nodular cast iron yakakurumidza kugadzirwa kuita simbi yakakandwa yechipiri chete kune grey cast iron uye inoshandiswa zvakanyanya. Iyo inonzi "inotsiva simbi yesimbi" inonyanya kureva ductile iron. Ductile iron inowanzo shandiswa kugadzira zvikamu zve crankshafts uye camshafts emotokari, matirakita, uye emukati injini dzinopisa, pamwe nepakati-kudzvanywa mavharuvhu emichina yakawanda.

Iyo inowanzo tsanangura hunhu hwe ductile cast iron chimiro chegraphite. Mune ductile irons, iyo graphite iri muchimiro chemanodule kwete maflakes sezvairi mugrey iron. Iyo yakapinza chimiro chemaflakes e graphite inogadzira kushushikana pfungwa mukati mesimbi matrix uye yakatenderedzwa chimiro chemanodule zvishoma, nekudaro kuvharidzira kusikwa kwekutsemuka uye nekupa iyo inosimudzira ductility inopa alloy zita rayo. Kuumbwa kwemanodule kunowanikwa nekuwedzerwa kwenodulizing elements, kazhinji magnesium (noti magnesium inovira pa 1100 ° C uye iron inonyunguduka pa 1500 ° C) uye, zvishoma ikozvino, cerium (kazhinji iri muchimiro cheMischmetal). Tellurium yakashandiswa zvakare. Yttrium, kazhinji chikamu cheMisch simbi, yakadzidzwawo seinogoneka nodulizer.