Crankshaft steel C38N2 ke mofuta o mocha oa tšepe e sa tingoeng le e halefileng, e nkang sebaka sa tšepe e tingoeng le e halefileng ho etsa li-crankshaft tsa enjene ea Renault. Litšitiso tse holim'a moriri ke liphoso tse tloaelehileng bophelong ba li-crankshafts, haholo-holo tse bakoang ke mefokolo ea metallurgical e kang li-pores le looseness ho ingot ea pele e petetsoang ho tloha bohareng ho ea holimo nakong ea ts'ebetso ea "die forging". Ho ntlafatsa boleng ba mantlha ba thepa ea crankshaft e fetohile sepheo sa bohlokoa ts'ebetsong ea ho roala. Ka ho fokotsa ho nolofatsa ha ho feta nakong ea ho roala, le ho khothalletsa deformation ea mantlha ke mokhoa o motle bakeng sa ho lokoloha le ho fokotseha ha motheo oa sebopeho se entsoeng ka welded.

Litsebi tse tsoang Univesithing ea Saense le Theknoloji Beijing li ithutile litlamorao tsa maemo a matla, mocheso oa deformation, sekhahla sa deformation, palo ea deformation, le ho feta ka nako ea tšepe e sa timang le e halefileng ea C38N2 ea li-crankshafts ka liteko tsa papiso ea mocheso, metallography ea optical le phetiso. litebello tsa electron microscopy. Molao oa tšusumetso oa karoloana ea static recrystallization volume le residual strain rate between passes.

Liphetho tsa liteko li bonts'a hore ka keketseho ea mocheso oa deformation, sekhahla sa deformation, palo ea deformation kapa nako ea nakoana lipakeng tsa li-passes, karolo ea molumo oa static recrystallization e ntse e eketseha butle-butle, 'me sekhahla se setseng sa mathata se fokotseha. ; Boholo ba lijo-thollo tsa austenite bo eketseha, 'me karoloana ea static recrystallization volume ea fokotseha, empa phetoho ha e bohlokoa; ka tlase ho 1250 ℃, ha mocheso oa austenitizing o ntse o eketseha, karoloana ea palo e tsitsitseng ea recrystallization ha e fokotsehe haholo, empa Ka holimo ho 1250 ℃, ho eketseha ha mocheso oa austenitizing ho hlakile hore ho fokotsa karoloana ea molumo oa recrystallization e tsitsitseng. Ka mokhoa oa linear loketseng le lisekoere tse nyenyane, mohlala oa lipalo oa kamano pakeng tsa static recrystallization bophahamo ba modumo karoloana le fapaneng deformation tshebetso parameters fumanoa; mokhoa oa lipalo o ntseng o le teng oa residual strain rate oa ntlafatsoa, ​​'me mokhoa o setseng oa lipalo o nang le nako ea khatello oa fumanoa. Ho lekana hantle.