30CrMnSi钢热处理工艺改进  

Improvement on Heat Treatment Process of 30CrMnSi Steel

作　　者：刘志强[1] 李春杰[2] 黄鑫 郑喜平 

机构地区：[1]河南理工大学研究生处,河南焦作454003 [2]焦作大学机电工程学院,河南焦作454003 [3]上海品彦光电科技有限公司技术部,上海201314 [4]河南江华工量具有限公司技术部,河南商丘476000

出　　处：《热加工工艺》2016年第4期168-170,共3页Hot Working Technology

基　　金：河南省科技厅项目(132300410459)

摘　　要：为了提高30CrMnSi钢的冲击韧度,用亚温淬火+中温回火工艺代替常规调质工艺。结果表明:改进工艺不降低试样的硬度,而冲击吸收功从54.5 J提高到86.7 J,达到原来的1.6倍,同时避免了第二类回火脆性,满足了高端液压油缸的工况环境要求。In order to improve the impact toughness of 30CrMnSi steel, the conventional quenching and tempering process was replaced with sub-temperature quenching ＋ medium temperature tempering process. The results show that： the improved process does not reduce the hardness of samples, and the impact absorption energy is increased from 54.5 J to 86.7 J, up to 1.6 times. The tempering brittleness of the second type is avoided. It meets the requirements of high hydraulic cylinder working conditions.

关 键 词：30CRMNSI钢 热处理工艺 亚温淬火 冲击韧度 调质 

分 类 号：TG142.33[一般工业技术—材料科学与工程]