工艺参数对机匣冷态强力旋压力学行为影响规律研究  

Study on Influence of Process Parameters on Mechanical Behavior of Casing Cold Power Spinning

作　　者：束学道[1,2] 郑家斌 刘艳丽 徐海洁 谢超 SHU Xuedao;ZHENG Jiabin;LIU Yanli;XU Haijie;XIE Chao(Faculty of Mechanical Eng.&Mechanics,Ningbo Univ.,Ningbo 315211,China;Zhejiang Provincial Key Lab.of Part Rolling Technol.,Ningbo Univ.,Ningbo 315211,China)

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]宁波大学浙江省零件轧制成形技术研究重点实验室,浙江宁波315211

出　　处：《工程科学与技术》2024年第4期229-237,共9页Advanced Engineering Sciences

基　　金：浙江省基金重点项目(LZ22E050002);国家自然科学基金项目(52375346);宁波市重大科技攻关项目(2022Z002)。

摘　　要：针对航空钣金机匣材料难于成形,且成形后的产品精度难以控制等问题,本文以高温合金GH3030为材料,在阐明钣金机匣冷态强旋成形回弹理论与载荷作用机制基础上,使用SIMUFACT.FORMING有限元软件,导入实验室之前所得到的GH3030的本构方程,在软件中建立了航空机匣锥形件冷态强旋的仿真模型,分析了旋轮间隙、旋轮进给比、芯模半锥角等旋压参数对钣金机匣冷态强旋成形回弹与载荷的影响规律;采用正交实验得到了各工艺参数对回弹角度影响的主次规律,并在此基础之上得到最优工艺参数组合;采用BBD(Box-Behnken design)响应曲面设计实验方法,得到旋压过程中最大成形力与旋压参数的量化回归模型,并对回归方程进行方差分析,计算回归方程的多元相关系数、可信度以及精确度。最终结果表明:所得到的模型的可信度和精准度较高;在最终实验结果与仿真结果中取点验证,发现误差在10%以内,因此,回归模型较为精准。最后,进行了旋压实验,对比分析了仿真结果与旋压实验实测结果的回弹角度,其平均误差在6.2%以内,验证了仿真结果及回归模型的可靠性。研究表明:仿真分析的回弹角度与实验测得回弹角度变化趋势几乎相同,并且误差较小,控制在12%以内,表明仿真分析的结果能够较准确地展现旋压件的回弹规律。本文的研究结果为实现高温合金钣金机匣锥形件冷强旋的精确成形提供了理论指导和技术支持。It is difficult to form aviation sheet-metal casing materials,and the precision of the formed products is also difficult to control;considering these problems,in this work,the superalloy GH3030 was considered as a material.On the basis of clarifying the springback theory and the load mechanism of cold strong spinning forming of sheet-metal casings,the Simufact Forming finite-element software package was used to import the constitutive equation of GH3030 obtained prior to the laboratory experiments,and a simulation model of cold strong spinning of aviationcasing conical parts was established.The influences of spinning parameters such as the roller gap,roller feed ratio,and mandrel half-cone angle on the springback and load were analyzed.The primary and secondary rules of the influence of each process parameter on the springback angle were obtained by orthogonal testing,and an optimal combination of process parameters was obtained on this basis.The Box-Behnken design response surface test method was used to obtain a quantitative regression model for the maximum forming force and spinning parameters,and variance analysis of the regression equation was carried out to calculate its multivariate correlation coefficient,reliability,and accuracy.The final results show that the reliability and accuracy of the obtained model are high,and the error is less than 10% when the final experimental and simulation results are compared.Therefore,the regression model is very accurate.Finally,spinning experiments were carried out,and the springback angles of the simulation results and the measured results from these experiments were compared and analyzed.The average error was within 6.2%,and this verifies the reliability of the simulation results and the regression model.This work shows that the trend in the springback angle obtained from the simulation analysis is almost the same as that measured in experiments,and the error is controlled within 12%,indicating that the results of the simulation analysis can accurately represent the

关 键 词：钣金机匣 高温合金GH3030 冷强旋 回弹 成形力 

分 类 号：TG132.3[一般工业技术—材料科学与工程] TG306[金属学及工艺—合金]