CAJ | 학술논문

研究了840℃、860℃、880℃三个不同的碳化物熔断温度和两个不同的冷却速度对Cr8型轧辊用钢球化组织的影响。研究了950℃～1140℃淬火和1040℃淬火+200℃～600℃回火对Cr8型轧辊用钢淬火组织和晶粒度及硬度的影响。结果表明：Cr8钢种最佳的球化退火工艺为880℃熔断，20℃/h的速度冷到740℃保温球化。Cr8钢种最佳的淬火温度为1040℃～1060℃，最佳的回火温度为520℃～540℃。
연구료840℃、860℃、880℃삼개불동적탄화물용단온도화량개불동적냉각속도대Cr8형알곤용강구화조직적영향。연구료950℃～1140℃쉬화화1040℃쉬화+200℃～600℃회화대Cr8형알곤용강쉬화조직화정립도급경도적영향。결과표명：Cr8강충최가적구화퇴화공예위880℃용단，20℃/h적속도랭도740℃보온구화。Cr8강충최가적쉬화온도위1040℃～1060℃，최가적회화온도위520℃～540℃。
The effect of three different carbide fusing temperature at 840℃, 860℃, 880℃and two differ-ent cooling speed on spheroidized structure of Cr8 type roll steel was studied. The effect of 950 ℃~1140 ℃quenching and 1040℃quenching+200℃~6 00℃tempering on quenching structure and grain size and hard-ness of Cr8 type roll steel was studied. Results showed that the best spheroidizing annealing process of Cr8 steel is fusing at 880℃, and cooling to 740℃at a rate of≤20℃/h and spheroidizing at 740℃. The optimum quench-ing temperature of Cr8 steel is 1040℃~1060℃, the best tempering temperature of Cr8 steel is 520℃~540℃.