Cov pa roj carbon siab ua tau zoo cov yam ntxwv
qhov zoo:
1. Lub zog siab (HRC60-65) thiab zoo hnav hnav tuaj yeem tau tom qab kev kho cua sov.
2. Lub hardness yog sim nyob rau hauv cov ntsiab lus annealed, thiab nws muaj machinability zoo.
3. Cov khoom nyoos tau yooj yim thiab cov nqi tsim tawm yog tsawg.
Qhov tsis zoo yog:
1. Lub tshav kub tsis zoo. Thaum ua haujlwm kub ntawm lub cuab yeej yog siab dua 200 ℃, nws qhov nyuaj thiab hnav tsis kam yuav ua rau poob qis.
2. Tsis tshua muaj siab tawv. Txoj kab uas hla ntawm ua kom tiav tawv thaum dej quenching feem ntau tsuas yog 15-18 hli; lub siab tshaj plaws lub taub los yog tuab ntawm tiav hardening thaum roj quenching tsuas yog 6 hli, thiab nws yooj yim rau deform thiab tawg.