Kufurirwa kwezvinhu zvishanu zvikuru zve ductile iron pane castings

Kemikari ye ductile iron inonyanya kusanganisira zvishanu zvakajairika zvinhu zvekabhoni, silicon, manganese, sarufa uye phosphorus. Kune mamwe ma castings ane akakosha zvinodikanwa pakurongeka uye kuita, hushoma hwezvinhu zvealloying zvinosanganisirwawo. Kusiyana neakajairwa grey cast iron, ductile iron inofanirwawo kunge iine trace uwandu hwezvakasara spheroidal zvinhu kuitira kuve nechokwadi chegraphite spheroidization. Isu tinogadzira zvakasiyana-siyana zvekukanda kwemarori eJapan neEurope, zvakaita sespring bracket, chitubu chesimbi,chitubu pin uye chitubu bushing.

1, Kabhoni uye kabhoni yakaenzana sarudzo musimboti: kabhoni ndicho chinhu chakakosha cheiyo ductile iron, yakakwira kabhoni inobatsira graphitization. Nekudaro, yakakwira kabhoni yemukati inokonzeresa graphite kuyangarara. Naizvozvo, muganho wepamusoro wekabhoni yakaenzana mu ductile iron wakavakirwa pamusimboti wekuti hapana graphite inoyangarara.

2, Silicon yekusarudza musimboti: Silicon chinhu chakasimba chegraphitizing. Mune ductile iron, silicon haingogone kudzikisa zvinobudirira maitiro emuchena muromo uye kuwedzera huwandu hweferrite, asiwo ine basa rekunatsa eutectic masumbu nekuvandudza kutenderera kwemagraphite spheres.

3, Manganese sarudzo musimboti: Sezvo sarufa yemukati mune ductile iron yatove yakaderera zvakanyanya, haidi yakawandisa manganese kuti isaite sarufa, basa remanganese mu ductile iron rinonyanya kuwedzera kugadzikana kwepearlite.

4, Phosphorus kusarudza masimboti: phosphorus chinhu chinokuvadza, yakanyanya kuderera solubility musimbi yakakandwa. Kazhinji, iyo yakaderera zviri mukati phosphorus mu ductile iron, zviri nani.

5, Sulfur yekusarudza musimboti: Sarufa chinhu chinopokana-denderedzwa, chine hukama hwakasimba nemagnesium, isingawanzo pasi uye zvimwe zvinhu zvakatenderera, kuvapo kwesarufa kuchapedza zvakawanda zvespheroidal zvinhu muferrofluid, kuumbwa kwemagnesium uye isingawanzo. pasi sulfides, zvichikonzera slag, porosity uye humwe hurema hwekukanda.

6, Spheroidal element yekusarudza musimboti: muchimiro chekuve nechokwadi chekuti spheroidal inokodzera, iyo yasara huwandu hwemagnesium uye isingawanzo pasi inofanira kunge yakaderera sezvinobvira. Magnesium uye zvisingawanzo pasi zvakasara zvakanyanyisa, zvichawedzera tsika yemuromo muchena wesimbi yemvura, uye ichakanganisa ma mechanic properties ye castings nekuda kwekuparadzaniswa kwavo pamiganhu yezviyo.