摘要: |
通过建立TC4钛合金薄壁舱体真空时效成形有限元模型,分析了温度、时间和初变形量对舱体蒙皮卷残余应力的影响,得出了零件真空时效成形合理工艺参数。进行了舱体蒙皮卷真空时效成形工艺试验研究。试验结果表明:在温度650℃、保温时间30min时,时效成形的零件尺寸精度满足工程要求。 |
关键词: TC4钛合金;薄壁舱体;真空时效成形 |
基金项目: |
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Study on Vacuum-aging Forming Technology of TC4 Alloy Cabin |
Yuan Yong1, Cui Yuanjie1, Li Zhongquan1, Zhang Xiaolong1, Zhu Pingguo2
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1. Shanghai Spaceflight Precision Mechanism Institute, Shanghai 201600;2. Shanghai Aerospace Power Technology Co., Ltd., Shanghai 201615
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Abstract: |
By seting up the finite element model of TC4 alloy cabin vacuum-aging forming, the effects of temperature, time and initial deformation on the residual stress and dimension precision of the cabin were analyzed. The reasonable processing parameters for the vacuum-aging forming were obtained. Vacuum-aging forming of the cabin was carried out. The resluts show that the dimensional accuracy of cabin was in good conformity with project requirement when temperature is 650℃ and holding time is 30min. |
Key words: TC4 alloy;cabin;vacuum-aging forming |