李留柱,李智军,李宏伟,等.高温合金薄壁W截面密封环滚压成形壁厚变化研究[J].精密成形工程,2019,11(5):43-49.
LI Liu-zhu,LI Zhi-jun,LI Hong-wei,et al.Wall Thickness Variation of a Superalloy Thin-Walled W-section Seal Ring during Roll Forming[J].Journal of Netshape Forming Engineering,2019,11(5):43-49. |
| 高温合金薄壁W截面密封环滚压成形壁厚变化研究 |
| Wall Thickness Variation of a Superalloy Thin-Walled W-section Seal Ring during Roll Forming |
| 投稿时间：2019-08-05 修订日期：2019-09-10 |
| DOI：10.3969/j.issn.1674-6457.2019.05.006 |
| 中文关键词: 滚压成形 高温合金 W截面密封环 壁厚变化 有限元模拟 |
| 英文关键词: rolling forming superalloy w-section seal ring wall thickness variation Fe simulation |
| 基金项目:国家自然科学基金（U1737212，U1637102） |
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| 中文摘要: |
| 目的 研究滚压成形过程中环件壁厚的变化规律。方法 基于ABAQUS/Explicit平台建立了GH4169薄壁W截面密封环多道次滚压成形三维弹塑性有限元模型，分析了滚压成形过程中环件壁厚沿周向及轴向的变化情况以及工艺参数对环件壁厚变化的影响规律。在此基础上，进行与模拟条件一致的试验研究，并与模拟结果进行了对比分析。结果 滚压成形过程，环件壁厚沿周向分布均匀而沿轴向分布不均匀；随着变形量增大，减薄带宽度增大；进给辊进给速度增大，环件壁厚不均匀性加剧；随着驱动辊转速、进给辊与环件间摩擦因数的增大，环件壁厚减薄呈减小趋势。结论 环件滚压成形过程中，应合理分配各道次变形量，适宜的工艺参数为：驱动辊转速为2 rad/s，进给速度为0.2 mm/s，摩擦因数为0.1。 |
| 英文摘要: |
| The paper aims to study the variation law of the ring wall thickness during roll forming. Based on the ABAQUS/Explicit platform, a three-dimensional elastoplastic finite element model of GH4169 thin-walled W-section seal ring was established and verified. On this basis, the variation of the ring wall thickness in the circumferential direction and the axial direction during the rolling forming and the influence of the process parameters on the wall thickness variation of the ring were analyzed. The results show that during the ring forming process, the wall thickness of the ring was evenly distributed along the circumferential direction and unevenly distributed along the axial direction; the width of the thinned strip increased with the increase of the deformation amount; the wall thickness unevenness of the ring increased with the increase of driven roller feed rate; the wall thickness decreased with the increase of rotation speed of the driving roller and the friction coefficient between the driven roller and the ring. During the rolling process of ring parts, the deformation amount of each pass should be reasonably distributed. The suitable process parameters are: driving roller rotation speed of 2 rad/s, feed rate of 0.2 mm/s, and friction coefficient of 0.1. |
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