I-iron Ductile, eyaziwa ngokuba yi-spheroidal okanye i-nodular iron, liqela le-iron alloys ene-microstructure ekhethekileyo ebanika amandla aphezulu, ukuguquguquka, ukuqina, kunye nokunwebeka. Iqulethe ngaphezu kwe-3 yeepesenti yekhabhoni kwaye inokugotywa, ijijwe, okanye ikhubazeke ngaphandle kokwaphuka, ngenxa yesakhiwo sayo se-graphite flake. Intsimbi yentsimbi iyafana nentsimbi kwiipropathi zayo zomatshini kwaye yomelele ngakumbi kunentsimbi eqhelekileyo.
Ukujula kwentsimbi kwenziwa ngokugalela intsimbi enyibilikisiweyo kwimibundo, apho intsimbi iphola kwaye iqine ukwenza iimilo ezifunwayo. Le nkqubo yokuphosa iphumela kwizinto eziqinileyo zetsimbi ezinokuqina okugqwesileyo.
Yintoni eyenza i-Ductile Iron Yahluke?
Intsimbi yentsimbi yaqanjwa ngo-1943 njengophuculo lwangoku ngaphezu kwentsimbi yesiko. Ngokungafaniyo nentsimbi etyhidiweyo, apho igraphite ibonakala ngathi ziiflakes, iductile iron inegraphite ekwimo yeespheroids, kungoko kusithiwa igama elithi “spheroidal graphite.” Esi sakhiwo sivumela i-iron ductile ukuba imelane nokugoba kunye nokothuka ngaphandle kokuqhekeka, inikezela ukomelela okukhulu kunentsimbi yesiko, ethanda ukuba brittleness kunye nokwaphuka.
I-iron ye-Ductile yenziwe ngokuyinhloko kwi-iron yehagu, i-iron ecocekileyo ephezulu kunye ne-90% ye-iron content. I-iron yehagu ikhethwa ngenxa yokuba inezinto ezincinci ezishiyekileyo okanye ezinobungozi, i-chemistry engaguqukiyo, kwaye ikhuthaza iimeko ezifanelekileyo ze-slag ngexesha lemveliso. Lo mthombo sisizathu esibalulekileyo sokuba kutheni i-iron ductile ikhetha i-iron yehagu ngaphezu kweminye imithombo efana ne-scrap metal.
Iipropati ze-Ductile Iron
Amanqanaba ahlukeneyo entsimbi ye-ductile adalwe ngokulawula isakhiwo se-matrix esijikeleze igraphite ngexesha lokuphosa okanye ngonyango olongezelelweyo lobushushu. Ezi zintlukwano ezincinci zokuqulunqa zenzelwe ukufezekisa i-microstructures ethile, leyo ichaza iimpawu zebakala ngalinye le-ductile iron.
Intsimbi erhuqwayo inokucingelwa njengentsimbi enegraphite spheroids efakwe ngaphakathi. Iimpawu ze-metallic matrix ezijikeleze i-graphite spheroids zichaphazela kakhulu iipropathi ze-ductile iron, ngelixa i-graphite ngokwayo inegalelo ku-elasticity kunye nokuguquguquka kwayo.
Kukho iintlobo ezininzi zeematriki kwi-iron ductile, kunye nezi zilandelayo ziqhelekileyo:
- 1. Ferrite-I-matrix yentsimbi ecocekileyo ene-ductile kakhulu kwaye iguquguqukayo, kodwa inamandla aphantsi. I-Ferrite inokunganyangeki kokunxiba, kodwa ukuchasana kwayo okuphezulu kunye nokulula komatshini kuyenza ibe yinxalenye ebalulekileyo kumabakala entsimbi ye-ductile.
- 2. IPearlite-I-composite ye-ferrite kunye ne-iron carbide (Fe3C). Kunzima kakhulu kunye ne-ductility ephakathi, enika amandla aphezulu, ukuxhathisa okulungileyo kokunxiba, kunye nokuchasana kwempembelelo ephakathi. I-Pearlite ikwabonelela ngokusebenza kakuhle.
- 3. IPearlite / Ferrite– Isakhiwo esixubeneyo kunye ne-pearlite kunye ne-ferrite, eyona matrix ixhaphake kakhulu kumabakala orhwebo kwi-ductile iron. Idibanisa iimpawu zombini, inika indlela elungeleleneyo kumandla, i-ductility, kunye nobuqili.
I-microstructure ekhethekileyo yentsimbi nganye iguqula iimpawu zayo ezibonakalayo:
AmaBanga eNsimbi eDuctile aqhelekileyo
Ngelixa kukho izinto ezininzi ezahlukeneyo zokucaciswa kwentsimbi ye-ductile, ii-Foundries zihlala zibonelela ngamabakala ama-3 aqhelekileyo:
Izinto eziluncedo kwi-Ductile Iron
I-iron ductile ibonelela ngeenzuzo ezininzi kubaqulunqi kunye nabavelisi:
- • Inokuphoswa lula kwaye yenziwe ngoomatshini, ukunciphisa iindleko zemveliso.
- • Inomlinganiselo ophezulu wokomelela ukuya kubunzima, obuvumela ukuba kubekho izinto ezihlala ixesha elide kodwa zikhaphukhaphu.
- • Intsimbi erhuqwayo inika ibhalansi elungileyo yokuqina, ukusebenza kakuhle kweendleko, kunye nokuthembeka.
- • I-castability ephezulu kunye nokunyanzeliswa kwayo kwenza ukuba ifaneleke kwiindawo ezinzima.
Ukusetyenziswa kwe-Ductile Iron
Ngenxa yamandla ayo kunye ne-ductility, i-iron ductile inoluhlu olubanzi lwezicelo zoshishino. Iqhele ukusetyenziswa kwimibhobho, iinxalenye zemoto, iigiya, izindlu zokumpompa, kunye neziseko zoomatshini. Ukuxhathisa kwe-Ductile iron kwi-fractures kwenza kube yinto efanelekileyo kwizicelo zokhuseleko, ezifana ne-bollards kunye nokukhusela impembelelo. Ikwasetyenziswa ngokubanzi kwishishini lamandla omoya kunye nezinye iimeko ezinoxinzelelo oluphezulu apho ukuqina kunye nokuguquguquka kubalulekile.
Ixesha lokuposa: Apr-25-2024
