摘要
对30CrMnTi钢耳轴的超声波淬火工艺进行了研究,并对耳轴的显微组织和力学性能进行了分析。结果表明,耳轴的表面硬度和裂纹形成概率随着超声波涡流压力的升高而增加,而冲击性能和弯曲畸变量随着涡流压力的升高而下降,在3 MPa的涡流压力下,耳轴在20号机械油中的冷却特性接近于水淬,此时耳轴的淬硬层深为24 mm,显微组织是板条状马氏体。
The uhrasonic quenching process and the microstructure and mechanical properties of the 30CrMnTi steel trunnion after quenching were investigated. The resuhs show that the surface hardness and crack formation probability of the trunnion raise along with the increase of eddy pressure, while the impact property and bending deflection decrease. When the ultrasonic eddy pressure is 3 MPa, the cooling characteristics of the trunnion in mobile oil N20 act like in water. The hardened layer depth of the trunnion after ultrasonic quenching is 24 mm and the microstructure is lath martensite.
出处
《金属热处理》
CAS
CSCD
北大核心
2015年第2期159-162,共4页
Heat Treatment of Metals
基金
河南省科技厅项目(132300410459)
河南省教育厅科学技术研究重点项目(13A430326)
河南省高等学校矿业工程材料重点学科开放实验室开放课题(MEM12-2)
关键词
超声波淬火
耳轴
30CrMnTi钢
组织
力学性能
ultrasonic quenching
trunnion
30CrMnTi steel
microstructure
mechanical property
