大型薄壁圆筒件多件高压气淬均匀性调控技术
Quenching uniformity control techniques of high-pressure gas quenching for multiple large thin-wall cylindrical parts
李闯 1李琼 2詹雨衡 3丛培武 1陆文林 1姚佳伟 1韩永珍1
作者信息
- 1. 中国机械总院集团北京机电研究所有限公司,北京 100083
- 2. 西安航天动力机械有限公司,陕西 西安 710038
- 3. 北京理工大学宇航学院,北京 100081
- 折叠
摘要
通过建立合适的三维物理模型和控制方程,研究了大型薄壁圆筒件多件装炉条件下的高压气淬冷却过程.根据不同装炉条件下炉内的流场和温度场的数值模拟结果,发现通过合理增加导流板结构,可以有效改善气淬过程中炉内的流场,在满足淬火冷却条件的前提下,使得工件的温度场分布更加均匀,解决了多件同时气淬存在的阴阳面问题.最后通过试验验证了模拟结果的正确性,为风冷系统优化提供了可行路径,也为以后提高大型立式真空气淬装备气淬效果提供了理论依据.
Abstract
High-pressure gas quenching process of large thin-wall cylindrical parts under multi-piece loading conditions was investigated by establishing a suitable three-dimensional physical model and control equations.According to the numerical simulation results of the flow field and temperature field in the furnace under different loading conditions,it is found that addition of suitable deflector plate can effectively improve the flow field in the furnace,and enhance the homogeneity of the temperature field of the workpieces in condition of meeting the quenching and cooling demand,during the process of gas quenching.The method can be used to solve the non-uniform cooling problem,which exists in the gas quenching of multiple pieces at the same time.Finally,the correctness of the simulation results is verified through experiments,which provides a feasible path for the optimization of the high-pressure gas cooling system,and also provides a theoretical basis for the future improvement of the gas quenching effect of large-scale vertical vacuum gas quenching equipment.
关键词
大型变壁厚薄壁圆筒件/立式真空高压气淬/真空热处理/流场/温度场Key words
large thin-wall cylindrical parts with variable wall thickness/vertical vacuum high-pressure gas quenching/vacuum heat treatment/flow field/temperature field引用本文复制引用
基金项目
国家重点研发计划(2023YFB3408000)
出版年
2024
NETL
NSTL
万方数据