Kana uchifananidza simbi yakakandwa uye ductile iron, zvakakosha kuti unzwisise kuti nepo ese ari maviri emhando dzesimbi yakakandwa, ane zvimiro zvakasiyana uye anokodzera mashandisirwo akasiyana. Heino kuenzanisa kwakadzama:
1. Kuumbwa Kwezvinhu uye Chimiro
Malleable Cast Iron:
Kuumbwa:Simbi inokwenenzvekainogadzirwa nekupisa-inobata chena yakakandwa iron, ine kabhoni muchimiro chesimbi carbide (Fe3C). Kupisa kwekupisa, kunozivikanwa seannealing, kunopwanya iron carbide, ichibvumira kabhoni kuumba graphite mune nodular kana rosette fomu.
Mamiriro: Iyo annealing process inoshandura microstructure yesimbi, zvichiita kuti pave nediki, zvisina kurongeka magraphite particles. Chimiro ichi chinopa zvinhu izvi nekumwe ductility uye kuomarara, zvichiita kuti isanyanya brittle pane yechinyakare cast iron.
Ductile Iron:
Maumbirwo: Ductile iron, inozivikanwawo se nodular kana spheroidal graphite iron, inogadzirwa nekuwedzera nodulizing zvinhu zvakaita semagnesium kana cerium kusimbi yakanyunguduka isati yakanda. Zvinhu izvi zvinoita kuti kabhoni iumbe se spheroidal (round) graphite nodules.
Chimiro: Iyo spherical graphite chimiro mu ductile iron inosimudzira iyo ductility uye kukanganisa kupikisa, ichipa iyo yepamusoro michina zvimiro zvichienzaniswa nesimbi inogoneka.
2. Mechanical Properties
Malleable Cast Iron:
Tensile Strength: Inogoneka simbi yakakandwa ine mwero kusimba simba, kazhinji kubva pa350 kusvika 450 MPa (megapascals).
Ductility: Iine ductility inonzwisisika, iyo inoibvumira kukotama kana kukanganisa pasi pekunetseka pasina kutsemuka. Izvi zvinoita kuti ive yakakodzera kune maapplication uko kumwe kuchinjika kunodiwa.
Impact Resistance: Kunyange yakaoma kupfuura simbi yakakandwa, inogadzika simbi inogadzika haina simba-inoshingirira kana ichienzaniswa neiyo ductile iron.
Ductile Iron:
Tensile Strength: Ductile iron ine yakakwira tensile simba, kazhinji kubva pa400 kusvika 800 MPa, zvichienderana negiredhi uye kupisa kurapwa.
Ductility: Yakanyanya ductile, ine elongation muzana kazhinji pakati pe10% ne20%, zvichireva kuti inogona kutambanudza zvakanyanya isati yatsemuka.
Impact Resistance: Ductile iron inozivikanwa nekunaka kwayo kupikisa kuramba, ichiita kuti ive yakanakira maapplication ari pasi pesimba rekurodha kana kushushikana kwakanyanya.
3. Zvikumbiro
Malleable Cast Iron:
Kushandiswa Kwakajairwa: Simbi inogadzika inogadzika inowanzo shandiswa mudiki, zvakanyanya kuomesesa senge pombi fittings, mabhuraketi, uye hardware panodiwa simba riri pakati nepakati uye kumwe kuchinjika.
Yakajairika Mamiriro: Inowanzo shandiswa mukugadzira pombi, gasi pombi, uye chiedza maindasitiri maapplication. Iko kugona kwechinhu kutora kuvhunduka uye vibrations kunoita kuti ive yakakodzera kumisikidzwa inosanganisira mafambiro emuchina kana kuwedzera kwemafuta.
Ductile Iron:
Kushandiswa Kwakajairwa: Nekuda kwesimba rayo repamusoro uye kuoma, simbi ye ductile inoshandiswa mune zvakakura uye zvakanyanya kudiwa zvikumbiro senge zvinhu zvemotokari (semuenzaniso, crankshafts, magiya), inorema-duty pombi masisitimu, uye zvimiro mukuvaka.
Mamiriro Ezvakaita: Ductile iron yakanakira kushandiswa mumapaipi akanyanya-kudzvanywa, mvura uye masisitimu esuweji, uye mamiriro ezvinhu apo zvikamu zvinoiswa mukushushikana kwemagetsi kana kupfeka.
Mhedziso
Iron inogoneka uye ductile iron hazvina kufanana. Iwo marudzi akasiyana eakakandirwa simbi ane akasiyana zvivakwa uye mashandisirwo.
Simbi inokwenenzverwa inokodzera zvikumbiro zvisinganyanyi kudiwa uko mutengo-unoshanda uye zvine mwero michina zvivakwa zvinokwana.
Kusiyana neizvi, ductile iron inosarudzwa kune dzimwe nzvimbo dzakaoma uko kunodiwa simba repamusoro, ductility, uye kupikisa.
Nguva yekutumira: Aug-24-2024