Lub tsheb ib nrab -shafts yog ua los ntawm 40Cr steel:
1. 40Cr yog Suav teb tus qauv steel qib, thiab 40Cr steel yog ib qho ntawm cov hlau siv dav tshaj plaws hauv kev tsim khoom siv tshuab;
2. Tom qab kev kho kom zoo, nws muaj cov khoom siv kho tshuab zoo, zoo qis - kub cuam tshuam toughness, thiab tsis tshua muaj siab rhiab heev;
3. Cov hlau muaj kev ua haujlwm zoo quenching. Dej quenching tuaj yeem hloov kho rau 28-60mm, thiab roj quenching tuaj yeem hloov kho rau 15-40mm. Ntxiv nrog rau kev kho mob, cov hlau no kuj tsim nyog rau cyanide thiab high-frequency quenching;
4. Nws muaj machinability zoo. Thaum lub hardness yog 174-229HB, tus txheeb ze machinability yog 60%. Cov hlau no yog tsim los ua cov yas pwm nruab nrab.
