感应淬火对Cr12MoV钢轧辊硬度和硬化层深度的影响  

Effect of induction hardening on hardness and hardened layer depth of Cr12MoV steel roll

作　　者：彭龙生 林英华[2] 黄伟 陈皓 Peng Longsheng;Lin Yinghua;Huang Wei;Chen Hao(Hunan Lifang Roll Co.,Lid.,Hengyang Hunan 421681,China;Cllege of Mechanical Engineering,University of South China,Hengyang Hunan 421001,China)

机构地区：[1]湖南力方轧辊有限公司,湖南衡阳421681 [2]南华大学机械工程学院,湖南衡阳421001

出　　处：《金属热处理》2022年第8期118-122,共5页Heat Treatment of Metals

摘　　要：针对Cr12MoV钢轧辊感应淬火易开裂及硬化层深度的问题,研究了预热温度、淬火加热温度、感应圈移动速度和电源频率对Cr12MoV钢轧辊的硬度、开裂和硬化层深度的影响,探索了Cr12MoV钢轧辊具备高硬度不开裂及厚硬化层的方法。结果表明,Cr12MoV钢轧辊调质态硬度低于32 HRC与预热温度高于450℃时,能避免淬火开裂;随着感应淬火温度或感应圈移动速度提高,淬火Cr12MoV钢轧辊硬度出现先升高后降低的趋势,但无法明显影响硬化层深度;而随着感应电源频率降低,淬火Cr12MoV钢轧辊硬化层深度明显增加,但对淬火件硬度影响较小。In view of the problem of Cr12 MoV steel roll cracking easily and hardened layer depth during induction hardening, the effects of preheating temperature, quenching heating temperature, induction coil moving speed and power frequency on hardness, cracking and hardened layer depth of the Cr12 MoV steel roll were studied, and the method of Cr12 MoV steel roll with high hardness without cracking and thick hardened layer was explored. The results show that when the quenched and tempered hardness of the Cr12 MoV steel roll is lower than 32 HRC and the preheating temperature is higher than 450 ℃, quenching cracking can be avoided. With the increase of induction hardening temperature or the moving speed of the induction coil, the hardness of the hardened Cr12 MoV steel roll increases first and then decreases, but the hardened layer depth is not significantly affected. However, with the decrease of induction power frequency, the hardened layer depth of hardened Cr12 MoV steel roll increases obviously, but it has little effect on hardness of hardened Cr12 MoV steel.

关 键 词：Cr12MoV钢轧辊 感应淬火 预热温度 硬度 硬化层深度 

分 类 号：TG156.3[金属学及工艺—热处理]