超高強度低合金鋼薄壁管件旋壓成型性之模擬分析

Simulation Analysis of Spinning Forming of Thin Walled Ultrahigh-Strength Low-Alloy Steel Tubes

胡惠國(Huei-Guo Hu)

指導教授 ： 陳政順

國立臺北科技大學/機電學院/製造科技研究所/碩士(2011年)

摘要

旋壓成型為一連續局部複雜變形過程。本文利用ANSYS/LS-DYNA有限元素數值模擬分析D6AC超高強度低合金鋼之成型性，針對單道次順流旋型探討在不同壁厚減縮率下成型應力、應變與旋壓力之分佈規律。初步結果顯示旋壓力隨減縮率、進給率與輥輪圓角半徑的增加而上升，隨主軸轉速和輥輪前攻角的增加而下降，且本研究個案之減縮率可達70%。接著通過製程參數的改變與比較，在減縮率70%情況下，主軸轉速60rpm、進給率0.7mm/rev、輥輪攻角30°與圓角半徑4mm時，可得最佳的成形工件，可為旋壓製程提供重要的參考依據。

關鍵字

旋壓 ； 有限元素分析 ； D6AC

並列摘要

Spinning forming is a continuous and complex deformation process. In this paper, an finite element numerical simulation software, ANSYS / LS-DYNA, is used to analyze the spinning forming of D6AC Ultrahigh-Strength low-alloy Steel, and the distribution rules of spinning force, forming stress and strain under different wall thickness in a single pass of forward flow forming. Preliminary results indicate that the spinning force will be greater in accord with the increase of reduction rate, feed rate and the roller radius, with the decrease of spindle speed and Leading angle, and the reduction rate can be up to 70%. Followed by changes in process parameters and comparison of reduced rate of 70% of the case, the spindle speed 60 rpm, the feed rate 0.7 mm/rev, Leading angle of attack 30° and roller radius 4mm, forming the workpiece can get better ,which can provide an important reference for spinning process.

並列關鍵字

Spinning ； Finite Element Method ； D6AC

參考文獻

[4] 蔡有藤、陳永增、蔡健章，「旋壓成型可靠度分析之研究」，技術學刊，2008。

[10] F.J. Pistol, Spinning, Shear Forming and Flow Forming, Sheet Metal Ind., pp. 189-193, 1967.

[15] Steel, Metal Handbook, Eighth edition, Volume 4 Forming, American Society for Metals, Metals Park, Ohio, pp.148, 1990.

[1] E. Quigley, J. Monaghan, "Metal Forming:An Analysis of Spinning Process", Journal of Materials Processing Technology, pp.114-119, 2000.

[2] F.A. Hua, Y.S. Yang, Y.N. Zhang, M.H. Guo, D.y. Guo, W.h. Tong, Z.q. Hu, "Three-dimensional finite element analysis of tube spinning", Journal of Materials Processing Technology, pp.68-74, 2005.