1. Cov hardness zoo li
Carbon Steel (xws li 45 # steel): lub hardness): lub hardness tom qab kev kho cua sov feem ntau yog HBC25 ~ 35 (coj mus rau HBW210 ~ 250). Thaum quenched tab sis tsis tempered, nws tuaj yeem ncav cuag hrc55 ~ 62, tab sis lub hardness txo qis tom qab tempering.
Alloy Steel (xws li 40CR): Lub hardness yog ib nyuag siab me ntsis, kwv yees li ntawm HRC28 ~ 38, vim hais tias cov khoom siv ua kom yooj yim inhible softening.
2. Qhov xwm txheej cuam tshuam rau hardness
Tempering kub: rau txhua 100℃nce ntxiv los ntawm kwv yees li ntawm HRC3 ~ 5 (piv txwv li cov tawv tawv ntawm 45 tom qab qib qis dua ntawm 600℃tsawg zuj zus mus rau HRC28).
Phab ntsa tuab: Lub hardness ntawm tuab - balled hlab yog 5 ~ 10 hrc qis dua rau qhov sib txawv tshwm sim los ntawm qhov sib txawv hauv cov nqi txias.
Alloy cov ntsiab lus: Molybdenum (mo) lossis chromium (CR) tuaj yeem ncua kev ua kom sov thiab txhim kho kev nyuaj siab.
3. Cov txheej txheem kev hloov kho tshwj xeeb
Nto hardening: kev kho cua sov + siab- zaus qu} zaus questness ntawm hrc58 ~ 62, thaum tus tseem ceeb tswj hwm hrc30 ~ 35.
Tsawg - kub tempering: tempering ntawm 150 ~ 250℃tuaj yeem khaws cov tawv tawv siab dua (HRC40 ~ 45), tab sis cov tawv yog txo.
