摘要
为了研究18Cr2Ni4WA钢渗碳淬火后不同回火温度对渗碳表面和未渗碳部分(心部)力学性能的影响,采用显微硬度计、拉伸试验机和冲击试验机对渗碳淬火后不同回火温度下试样的力学性能进行了研究,并且运用ABAQUS仿真软件对不同回火温度下的齿轮试样性能进行了模拟分析。结果发现:随着回火温度的升高,试样硬度和强度降低的同时,心部的冲击吸收能量也下降明显,在300℃时其冲击吸收能量值接近于技术要求规定的最小值,考虑到炉温和材料成分存在不均匀性,因此此类钢在某些特定条件下,渗碳淬火后回火温度不宜高于260℃。
In order to study the effect of different tempering temperatures on the mechanical properties of carburized surface and non carburized part(core) of 18 Cr2 Ni4 WA steel after carburizing and quenching, the mechanical properties of specimen at different tempering temperatures after carburizing and quenching were studied by means of microhardness tester, tensile testing machine and impact testing machine. The properties of gear specimen at different tempering temperatures were simulated and analyzed by ABAQUS simulation software. The results show that with the increase of tempering temperature, the hardness and strength of the specimen decrease, and the impact absorbed energy of the core also decreases significantly. At 300 ℃, its impact absorbed energy value is close to the minimum value specified in the technical requirements. Considering the furnace temperature and the non-uniformity of material composition, the tempering temperature of this kind of steel after carburizing and quenching should not be higher than 260 ℃ under certain conditions.
作者
李峰
李双喜
李纪强
王红伟
刘桥桥
王东柱
苗圩巍
Li Feng;Li Shuangxi;Li Jiqiang;Wang Hongwei;Liu Qiaoqiao;Wang Dongzhu;Miao Weiwei(School of Mechanical Engineering,Donghua University,Shanghai 201620,China;Zhengzhou Machinery Research Institute Co.,Ltd.,Zhengzhou Henan 450002,China;Henan Polytechnic of Mechanical and Electrical Engineering,Zhengzhou Henan 451191,China;China Railway Engineering Equipment Group Tunnel Equipment Manufacturing Co.,Ltd.,Xinxiang Henan 453000,China;Shanghai 711 Research Institute,Shanghai 201108,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2021年第12期256-261,共6页
Heat Treatment of Metals
基金
国家重点研发计划(2018YFB2001904)。
关键词
18CR2NI4WA钢
齿轮
渗碳淬火
回火温度
力学性能
18Cr2Ni4WA steel
gear
carbonizing and quenching
tempering temperature
mechanical properties
