20Cr2Ni4A钢齿圈压力淬火过程的温度场模拟  

Temperature field simulation of pressure quenching process of 20Cr2Ni4A steel ring gear

作　　者：陈建文 袁伍丰 邹伟 刘克 欧阳雪枚 王鑫铭 Chen Jianwen;Yuan Wufeng;Zou Wei;Liu Ke;Ouyang Xuemei;Wang Xinming(Jianglu Machinery&Electronics Group Co.,Ltd.,Xiangtan Hunan 411100,China;School of Materials Science and Engineering,Xiangtan University,Xiangtan Hunan 411105,China)

机构地区：[1]江麓机电集团有限公司,湖南湘潭411100 [2]湘潭大学材料科学与工程学院,湖南湘潭411105

出　　处：《金属热处理》2023年第5期145-150,共6页Heat Treatment of Metals

摘　　要：基于20Cr2Ni4A钢齿圈在不同流量下进行压力淬火过程中冷却曲线的试验测定和对应换热系数的计算,开展有限元数值模拟,得到不同流量组合对齿圈压力淬火冷却过程温度场分布的影响规律。结果表明,189~1136 L/min流量对应的换热系数均呈现随温度下降先增大后减小的变化趋势,且随着流量的增大,换热系数的最大值随之增大。4组具有代表性的流量组合中,采用慢-快-快的流量组合能更好地减小齿圈内外温差。对比测温结果发现,模拟结果与试验数据吻合良好,建立的压力淬火温度场模型可靠,可为压淬工艺的优化提供理论指导。Based on the experimental measurement of the cooling curve of the ring gear made of 20Cr2Ni4A steel during the pressure quenching process under different flow rates and the calculation of the corresponding heat transfer coefficients,corresponding finite element numerical simulation was carried out,and the effect of different flow rate combinations on temperature field distribution of the ring gear during pressure quenching process was studied.The results show that the heat transfer coefficients corresponding to 189-1136 L/min flow rates all show a trend of increasing first and then decreasing with the decrease of temperature,and the maximum value of heat transfer coefficient increases with the increase of flow rate.Among the four representative flow rate combinations,the slow-fast-fast flow rate combination can better reduce the temperature difference between the inside and outside of the ring gear.Comparing with the temperature measurement results,it is found that the simulation results are in good agreement with the experimental data,and the established pressure quenching temperature field model is reliable,which can provide theoretical guidance for optimization of the pressure quenching process.

关 键 词：压力淬火 数值模拟 20CR2NI4A钢 齿圈 温度场 

分 类 号：TG156.1[金属学及工艺—热处理]