航天用隧道管轴向低压压形成形精度控制研究  

Research on Precision Control of Axial Low Pressure Forming for Aerospace Tunnel Tube

作　　者：胡德友 渠福泉 梁立冬 李奎 侯银松 闫瑾 初冠南[2] Hu Deyou;Qu Fuquan;Liang Lidong;Li Kui;Hou Yinsong;Yan Jin;Chu Guannan(Tianjin Aerospace Long March Vehicle Manufacturing Co.,Ltd.,Tianjin 300462;School of Materials Science and Engineering,Harbin Institute of Technology(Weihai),Weihai 264209)

机构地区：[1]天津航天长征火箭制造有限公司,天津300462 [2]哈尔滨工业大学(威海)材料科学与工程学院,威海264209

出　　处：《航天制造技术》2024年第4期20-24,共5页Aerospace Manufacturing Technology

摘　　要：针对运载火箭的高密度发射需求,进一步提升贮箱用隧道管整体制造质量可靠性和生产效率。以航天用Φ340mm的5A03铝合金隧道管为研究对象,通过开展轴向低压压形成形波纹有限元仿真分析,探究不同内压和补料量等工艺参数对隧道管波纹型面精度和壁厚分布影响规律。结果表明,波纹成形内压为4MPa,补料量为16.5mm时,波形精度和波高均达到设计要求,环向和轴向的波纹壁厚分布一致性较好,最大减薄率为7.09%。In response to the high-density launch demand of launch vehicles,the overall manufacturing quality,reliability and production efficiency of tunnel tubes for storage tanks are further improved.For the tunnel tube with a diameter of 340 mm made of 5A03 aluminum alloy for aerospace is taken as the research object.Through conducting finite element simulation analysis of axial low pressure forming corrugation,the influence of different process parameters such as internal pressure and replenishment amount on the accuracy of the corrugated surface and wall thickness distribution of the tunnel tube is explored.The results show that when the internal pressure of corrugated forming is 4 MPa and the amount of material added is 16.5 mm,the waveform accuracy and wave height meet the design requirements.The consistency of the circumferential and axial corrugated wall thickness distribution is good,and the maximum thinning rate is 7.09%.

关 键 词：5A03铝合金 轴向低压压形 内压 补料量 减薄率 

分 类 号：TG39[金属学及工艺—金属压力加工] V462[航空宇航科学与技术—航空宇航制造工程]