Ho ipapisitsoe le boiphihlelo ba indasteri ea rona, re lakatsa ho arolelana leseli le itseng mabapi le lisebelisoa tse tala le kalafo ea mocheso oa li-crankshafts tsa locomotive.
Lisebelisoa tsa mantlha tsa li-crankshaft tsa diesel ke tšepe e entsoeng ka tšepe le tšepe ea ductile. Li-crankshaft tsa tšepe tse entsoeng ka tšepe, ka lebaka la matla a tsona a phahameng le ho tiea ha tsona, li sebelisoa haholo liporong tsa sejoale-joale tse nang le matla a phahameng a disele. 42CrMoA le 42CrMo4 ke tse ling tsa lisebelisoa tse sebelisoang haholo bakeng sa li-crankshaft tsa diesel ka lebaka la matla a tsona a phahameng le ho thatafala ha tsona. Hobane li-crankshafts li na le meroalo e mengata e fapanyetsanoang nakong ea ts'ebetso ea 'nete, lisebelisoa tse tala li tlameha ho ba le matla a phahameng haholo a ho hlahisa, ho lelefatsa, ho fokotsa sebaka le matla a matla. Ho feta moo, lisebelisoa ka botsona li tlameha ho kopana le bohloeki bo phahameng (li-hydrogen content le li-non-metallic inclusions, joalo-joalo) le ho nepahala ho phahameng (ho kopana le litekanyetso tsa indasteri ea terene tse kang TB/T3475.1-2017). Mekhoa ea phekolo ea mocheso (crankshaft rolling, surface nitriding, le medium-frequency induction harding) le eona e hloka maemo a phahameng a ho hanyetsa le ho khathala. Ka lebaka la mefokolo le mefokolo ea tlhaho, li-crankshaft tsa tšepe tsa ductile ha li sa sebelisoa litereneng tsa disele tsa terene.