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| TA15 钛合金板材不贴模加热旋压成形规律研究 |
| Forming Law of Flexible Hot Spinning of TA15 Titanium Alloy |
| Received:June 28, 2014 Revised:September 01, 2014 |
| DOI：10. 3969 /j. issn. 1674-6457. 2014. 05. 006 |
| 中文关键词: 钛合金 锥形件 柔性 热旋 剪切旋压 工艺优化 |
| 英文关键词: titanium alloy cone part flexibility hot spinning shear spinning process optimization |
| 基金项目:国 家优秀青年科学基金(51222509) ; 凝固 技术国 家重点实验室自 主研究课题(97-QZ-2014,90-QP-2013) |
| Author Name | Affiliation | | ZHAN Mei | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China | | CHU Qiang | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China | | SHI Feng | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China | | WANG Xian-xian | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China | | YANG He | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China |
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| 中文摘要: |
| 目 的 揭示工艺 参数对钛合金锥形 件柔性加热 旋压成形 过程的 影响。 方法 采用 基于ABAQUS 平台 建立的 TA15 钛合金柔性热旋有限元仿真模型和基于正交试验设计的 模拟方案, 研究了 芯模预热温度、工件加热温度、旋轮与 芯模间 隙和旋轮进给比对该过程中, 工件的 切向拉应变和壁厚差的影响显著性与 规律。 结果 获得了 合理的 工艺 参数组合与 回归 方程。 结论 较小的旋轮进给比有利 于抑制工件的破裂; 适中的工件加热温度有利 于获得较为均匀 的壁厚。 |
| 英文摘要: |
| Objective In order to reveal the effects of process parameters on the forming process of hot spinning of titanium alloy. Methods A finite element model for flexible hot spinning process of TA15 alloy was established based on ABAQUS software, and orthogonal simulation scheme was designed to analyze the significance and law of influences of preheating temperature of mandrel, spinning temperature of workpiece, gap between roller and mandrel and feed rate on the tangential tensile strain and the wall-thickness difference of workpiece. Results Reasonable optimization of parameters and regression equation were obtained. Conclusion Small feed rate could help suppress the fracture of workpiece. Moderate spinning temperature was beneficial to uniform wall-thickness. |
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