基于应力松弛原理的T250钢薄壁壳体热校形工艺研究  

Process Study on Hot Shape Correction of T250 Steel Thin-walled Shell Based on the Stress Relaxation Theorem

作　　者：张志正[1] 杨立合[1] 孙菁 王锡鹏 郭刚 Zhang Zhizheng;Yang Lihe;Sun Jing;Wang Xipeng;Guo Gang(Xi’an Changfeng Research Institute of Mechanism and Electricity,Xi’an 710065)

机构地区：[1]西安长峰机电研究所

出　　处：《航天制造技术》2019年第5期38-40,44,共4页Aerospace Manufacturing Technology

摘　　要：针对某火箭发动机T250钢薄壁壳体在加工过程中出现的变形问题,统计分析了影响变形的主要因素,结合壳体工艺过程和材料性能特点提出了热校形方案。基于应力松弛原理研究了壳体热校形方法,总结了外压式热校形规律,并应用到实际生产中,有效解决了T250钢薄壁壳体变形问题。Aiming at the deformation problem of T250 steel thin-walled shell of a rocket engine during processing, the main factors affecting deformation were statistically analyzed. The hot shape correction project was proposed considering the process and material properties of the shell. Based on the stress relaxation theorem, the method of hot shape correction of thin-walled shell was researched, the external-compression hot shape correction principle was also summarized, and has been applied to actual production. It effectively solved the deformation problem of T250 steel thin-walled shell.

关 键 词：应力松弛 T250钢 薄壁壳体 热校形 

分 类 号：V43[航空宇航科学与技术—航空宇航推进理论与工程]