航空发动机用细长轴内方孔旋锻成形工艺研究  

Rotary Forging Process for Inner Hole of Slender Shaft for Aero-Engine

作　　者：王聚存 田天泰 马海鑫 姚俊征 张琦[2] WANG Jucun;TIAN Tiantai;MA Haixin;YAO Junzheng;ZHANG Qi(AECC South Industry Company Limited,Zhuzhou 412002,China;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]中国航发南方工业有限公司,株洲412002 [2]西安交通大学机械工程学院,西安710049

出　　处：《航空制造技术》2019年第20期45-49,共5页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(51875441)

摘　　要：针对航空发动机用细长轴难加工问题,介绍了采用旋转锻造加工的新工艺。为了进行细长轴内方孔的加工,设计和优化了符合成形要求的毛坯,确定了成形参数。利用得到的符合要求的毛坯建立了3D旋锻有限元模型进行旋锻过程的模拟,并对内方孔旋锻成形进行了试验研究。对成形后内方孔的尺寸和显微硬度进行了测量分析并观察了微观组织。结果表明:航空发动机细长轴内方孔的成形可以通过带芯轴凹进式旋转锻造方式进行加工,成形效率高,工件成形尺寸符合要求,对硬度与微观组织影响小。A new process using rotary swaging was introduced for the difficult machining of slender shafts for aero-engine. In order to process the square holes in the elongated shaft, the billet meeting the forming requirements were designed and optimized, and the forming parameters were determined. The 3D rotary swaging finite element model was used to simulate the swaging process using the obtained billet, and the internal square hole process was studied experimentally. The dimensions and microhardness after forming were measured and analyzed and the microstructure was observed. The results show that the forming of the square hole in the slender shaft of the aero-engine can be processed by the recessed rotary swaging method with the mandrel, the forming efficiency is high, the forming dimensions of the workpiece meets the requirements, and the influence on the hardness and the microstructure is minor.

关 键 词：旋转锻造 内孔成形 细长轴 航空发动机 数值模拟 

分 类 号：TG3[金属学及工艺—金属压力加工]