Nzira yekuvandudza michina zvimiro zve cast grey iron?
Gray yakakanda simbi isimbi-kabhoni chiwanikwa mune iyo chikamu chepamusoro grey. Kuburikidza nekutonga kwechimiro uye kuomesa maitiro, iyo kabhoni inonyanya kuoneka muchimiro che flake graphite. Iyo metallographic chimiro chegrey chakakanda simbi chinonyanya kuve chakaumbwa neflake graphite, simbi matrix uye zviyo muganho muganho eutectic.
Kuvapo kwe flake graphite mu grey cast iron kunoparadza iko kwekuenderera kwesimbi uye kunoita grey kukanda simbi chinhu chinopwanya. Asi grey cast iron ndeimwe yekutanga uye inonyanya kushandiswa simbi zvinhu. Gray yakakanda simbi ine zvakawanda zvivakwa. Kwenguva yakareba, mukugadzira tsika, isu takapfupikisa mamwe matanho akajairika ekuvandudza simba reyakagomarara regrey cast iron. Pasi pemamwe mamiriro ezvinhu, isu tinogona zvakare kugadzirisa yekucheka mashandiro, kupfeka kuramba uye kuvhunduka kwekutora kuita kweye grey cast iron.
Mukugadzirwa chaiko kwekukanda, ruzhinji rwegrey cast iron ndeye hypoeutectic. Naizvozvo, kuti ivandudze simba rayo rakasimba, mapoinzi anotevera anofanirwa kuitwa zvakanyanya sezvinobvira:
1) Guarantee iyo grey cast iron ine yakawanda uye yakawedzera yekutanga austenite dendrites panguva yekusimbiswa
2) Deredza huwandu hweeutectic graphite uye uite kuti igove zvakaenzana neakanaka A-mhando graphite
3) Wedzera huwandu hwemasumbu eutectic
4) Munguva yeaustenite eutectoid shanduko, ese shanduko kuita yakanaka pearlite matrix
Mukugadzirwa chaiko kwegrey cast cast iron, isu tinowanzoshandisa matanho anotevera kuzadzisa mhedzisiro iri pamusoro:
1) Sarudza zvine musoro makemikari
2) Chinja kuumbwa kwemutero
3) Yakaipisa simbi yakanyungudutswa
4) Inoculation kurapwa
5) Tsvaga kana yakaderera alloying
6) Kupisa kurapwa
7) Wedzera mwero wekutonhora panguva yekuchinja kwe eutectoid
Nhanho dzakananga kutorwa dzinoenderana nerudzi rwegrey cast cast iron, inodiwa dzimba uye chaiwo mamiriro ekugadzira. Nekudaro, zvinowanzo fanirwa kutora maviri kana anopfuura matanho kuti uwane kuita kunodiwa kwesimbi yakakandwa.
Post nguva: Dec-28-2020