Yiziphi izici okufanele zinakwe lapho kucishwa isithando somlilo esishisayo se-cast iron?

Phakathi kwazo zonke izinhlobo ze-cast iron, ukucisha isithando somlilo sokungeniswa kwensimbi empunga yikhona okunzima kakhulu. Ukucinywa kwesithando sokushisa se-grey cast iron induction kufana nensimbi, kanye nezinto zokucisha ezisetshenziswayo nazo ziyefana. Kumele kuqashelwe umehluko olandelayo:

Isikhathi sokushisa side kunaleso sezingxenye zensimbi. Ngokuvamile, kufanele kube ngaphezu kwemizuzwana embalwa futhi kufanele igcinwe isikhathi esithile ukuze isakhiwo esingancibiliki singancibilika sibe yi-austenite. Uma isivinini sokushisa sishesha kakhulu, sizodala ukucindezeleka okushisayo nokuqhekeka.

Izinga lokushisa lokushisa akufanele libe phezulu kakhulu, umkhawulo ongaphezulu ngu-950 ℃, ngokuvamile 900 ~ 930 ℃, amamaki ahlukene anezinga lokushisa elilungile, lapho izinga lokushisa lokushisa lifinyelela ku-950 ℃, i-phosphorus eutectic izovela phezu kwengxenye, futhi lapho izogcinwa i-austenite eqinile.

I-3) Ukuze wenze izinga lokushisa liguquke kancane kancane ukusuka phezulu kuya enkabeni, kungcono ukuthi ungacimi ngokushesha ngemva kokushisa, futhi ukupholisa kwangaphambili kwe-0.5 ~ 2s kungcono kakhulu.

4) Ukucima kwesithando somlilo sokungeniswa kwensimbi ngokuvamile kusebenzisa isixazululo se-polymer aqueous noma uwoyela njengendawo yokupholisa yokucisha, kanti ezinye izingxenye ezifana ne-cylinder liner zicinywa ngokuqondile ngamanzi njengendawo yokupholisa yokucisha, kanye nesihlalo se-valve somzimba we-cylinder. acinywe ukuzipholisa.

5) Ngemuva kokuthi insimbi empunga icishiwe esithandweni sokushisa sokungeniswa, ukushisa okuphansi kufanele kwenziwe ukuze kuqedwe ukucindezeleka. Isibonelo, i-cylinder liner kufanele ithonywe ngobuningi bamandla

I-matrix ye-ferritic cast iron malleable cast iron i-ferrite ne-graphic carbon. Ukuze uncibilikise i-carbon ku-austenite, kuyadingeka ukwandisa izinga lokushisa lokushisa (1050 ℃) futhi wandise isikhathi sokushisa (kufika ku-1min noma ngaphezulu), ukuze wenze ingxenye encane ye-Graphite carbon ihlakazeka ku-austenite, nangaphezulu. ubulukhuni bungatholakala ngemva kokucisha.