摘要
采煤机行走系统中的齿轨轮采用18Cr2Ni4WA钢制造,该齿轨轮的渗碳层深度及表面硬度提升一直备受关注。设计了多次叠加渗碳后淬火试验方案,采用Deform仿真软件对试验方案进行模拟分析,为试验提供渗碳层深度数据;设计了空冷和深冷处理对比试验方案,运用司替海-海莱司公式来计算试样的马氏体相变温度,从而选择淬火后温度,分析试验方案组的金相组织特点,如碳化物大小、马氏体及残余奥氏体占比等。结果表明,多次叠加渗碳淬火对增加齿轨轮的渗碳层深度有一定的提升作用,深冷处理工艺能够有效提高表面硬度。
The toothed rail wheel in the traveling system of shearer is made of 18Cr2Ni4WA steel,and the carbonization layer depth and surface hardness improvement of the tooth rail wheel have been attracting much attention.The quenching test protocol after multiple superimposed carbonation was designed.The test scheme was simulated using Deform simulation software to provide the carbonization layer depth data for the test.A comparative test scheme for air cold and deep cold treatment was designed.The Stensea-Heles formula was used to calculate the martenite phase transition temperature of the test sample,so as to choose the temperature after quenching,and analyze the metallophase microstructure characteristics of the test scheme group,such as carbide size,martenite and residual austenite proportion,etc.The results show that the superimposed carburization quenching increases the depth of the rail wheel,and the cryogenic treatment process can effectively improve the surface hardness.
作者
尚可超
廖云鑫
李玉华
SHANG Kechao;LIAO Yunxin;LI Yuhua(College of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)
出处
《热加工工艺》
2026年第5期232-236,共5页
Hot Working Technology
基金
中国博士后科学基金资助项目(2018M643690)
陕西省自然科学基础研究计划资助项目(2018JQ5087)
西安科技大学博士科研启动基金项目(2016QDJ051)
西安科技大学科研培育基金项目(201740)。
关键词
齿轨轮
Deform仿真
多次叠加渗碳淬火
深冷处理
渗碳层深度
表面硬度
gear rail wheel
Deform simulation
multiple superimposed carburizing and quenching
cryogenic treatment
depth of carburized layer
surface hardness
