锻压技术

薄壁大尺寸铌铪合金零件强力旋压的数值模拟研究

英文标题：Numerical simulation study on power spinning for Nb-Hf alloy part with thin wall and large size

分类号：V261.3+3；TG386.3+2

出版年,卷(期):页码：2023,48(7):64-70

摘要：

探究了工艺参数对薄壁大尺寸铌铪合金零件强力旋压工艺的影响规律，以指导实际的生产过程。在实际工艺的基础上，利用Abaqus/Explicit软件建立其强力旋压的有限元模型，并通过正交试验极差分析法对旋轮与芯模间隙、旋轮进给比以及旋轮与旋压件之间的摩擦因数等工艺参数对旋压件贴模性的影响规律进行研究。结果表明，强力旋压过程中旋轮进给比对旋压件贴模性的影响程度最大，而旋轮与芯模间隙的影响程度最小。对于薄壁大尺寸铌铪合金零件，当旋轮进给比为0.24 mm·r-1、旋轮与旋压件间的摩擦因数为0.05、旋轮与芯模间隙为3 mm时，强力旋压的贴模性最好，平均贴模间隙均值仅为1.003 mm。采用得到的工艺参数进行试验，进一步验证了有限元仿真分析的准确性。

In order to explore the influence laws of process parameters on the power spinning process for Nb-Hf alloy part with thin wall and large size and further guide the actual production process, based on the actual process, the finite element model of power spinning was established by software Abaqus/Explicit, and the influence laws of process parameters such as gap between spinning wheel and core die, feeding ratio of spinning wheel and friction coefficient between spinning wheel and spun parts were studied by the range analysis method of orthogonal test. The results show that the feeding ratio of spinning wheel has the greatest influence on the die fittingness of spinning parts during the power spinning process, while the gap between spinning wheel and core die has the least influence. For the thin-walled and large-sized Nb-Hf alloy parts, when the feeding ratio of spinning wheel is 0.24 mm·r-1, the friction coefficient core between spinning wheel and spun parts is 0.05 and the gap between spinning wheel and core die is 3 mm, the power spinning has the best die fittingness, the average die fittingnesss gap is only 1.003 mm. The test with the obtained process parameters further verifies the correctness of the finite element simulation analysis.

基金项目：

作者简介：闫静锴（1998-），男，硕士研究生 E-mail：y390245543@163.com 通信作者：吴向东（1970-），男，博士，副教授 E-mail：xdwu@buaa.edu.cn

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