摘要: |
分析了某大尺寸TA15钛合金异形曲面钛合金钣金件结构特点,并进行成形工艺分析,制定了先热压预成形主体型面后热压校形折弯角小于90°折弯边的工艺方案。通过有限元分析软件FormingSuite进行热压成形模拟,预估了易出现褶皱缺陷区域并提出坯料边缘开工艺豁口解决方案;生成了毛坯并通过优化得出最终下料尺寸。进行了预成形及终校形模具设计,通过试验获得了主体型面与检测样板间隙小于1mm、带曲率折弯边无褶皱、前侧折弯角约85°折弯边成形到位的钣金件。试验证明FormingSuite有限元分析对钛合金钣金件热压成形工艺研究具有较强的指导意义,先热压预成形主体型面后热压终校形工艺方案可行。 |
关键词: TA15钛合金;热压成形;FormingSuite;有限元分析;模具设计;异形曲面钣金件 |
基金项目:高档数控机床与基础制造装备国家重大专项项目(2014ZX04001-141)。 |
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Hot-press Forming Technology of TA15 Titanium Alloy Profiled Surface Sheet Metal Parts |
Liu Qi Li Baoyong Qin Zhonghuan Li Xin Du Haolong
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Beijing Hangxing Technology Development Co., Ltd, Beijing 100013
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Abstract: |
The structural characteristics of TA15 titanium alloy sheet metal with special shape are analyzed and the forming process is analyzed. The process that hot shape the bending edge of which bending angle is less than 90 ° after hot forming of the main body was developed. Through the finite element analysis software FormingSuite, the forming simulation is carried out. The shape of the fold defect is estimated band the blank edge open process gap solution is proposed; the blank is generated and the final cutting size is obtained by optimization. The preform and the final mold were designed. For the part prepared, the gap of the main surface and the test template was less than 1mm, the curvature bending edge without wrinkles, and the front bending edge of which bending angle is about 85° was forming in place. The experimental results show that the finite element analysis of Forming Suite has a strong guiding significance for the hot forming process of titanium alloy sheet metal parts and the forming process is feasible. |
Key words: TA15 titanium alloy;hot-press forming;FormingSuite;finite elements analysis;mold design;profiled surface sheet metal parts |