张光.曲面薄壁钛合金铸件变形工艺控制研究[J].精密成形工程,2018,10(3):77-81.
ZHANG Guang.Control of Thin-Walled Curved Titanium Casting Deformation[J].Journal of Netshape Forming Engineering,2018,10(3):77-81. |
| 曲面薄壁钛合金铸件变形工艺控制研究 |
| Control of Thin-Walled Curved Titanium Casting Deformation |
| 投稿时间：2018-04-19 修订日期：2018-05-10 |
| DOI：10.3969/j.issn.1674-6457.2018.03.014 |
| 中文关键词: 曲面薄壁 钛合金铸件 控制变形 |
| 英文关键词: thin-walled curved titanium casting deformation control |
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| 中文摘要: |
| 目的 研究曲面薄壁钛合金铸件变形规律及发生的阶段，提出防止变形的工艺措施。方法 通过对出气管铸件成形过程进行计算机模拟仿真，对蜡模、浇注成形后的铸件、热等静压后的铸件进行扫描拟合，分析了出气管在蜡模压制、铸造成形、热等静压过程中的变形，提出了控制蜡模变形和铸件热等静压过程变形的工艺措施，并进行了试验验证。结果 出气管蜡模在压制和放置过程中，远端浇口连接处发生翘曲变形，变形量约0.5 mm；铸件在无约束的热等静压过程中，发生扭曲变形，变形量约0.5 mm，蜡模变形和热等静压过程变形叠加，导致铸件变形约1 mm。结论 计算机模拟仿真可以有效缩短铸件研制过程，获得优质铸件；增加蜡模胎膜和约束下铸件热等静压，可以有效控制铸件变形，获得合格铸件。 |
| 英文摘要: |
| This paper aims to study the deformation law of thin-walled titanium alloy casting and propose processing measures for preventing deformation. Through the computer simulation of the casting process of outlet pipes, the castings and the waxes were scanned and fitted, and the deformation was analyzed in each stage. The technological measures for controlling the deformation of wax mould and casting heat were presented and verified by testing. In the process of pressing and placing, the sprue joint of the remote end deformed, the deformation amount was about 0.5 mm. The casting was distorted in the process of hydrostatic pressure, and the deformation amount was about 0.5 mm. The deformation of wax mould was superimposed with the static pressure deformation of casting heat, resulting in the final deformation of about 1mm. Analog simulation with computers could effectively shorten the process of casting research and obtain castings of high quality. Increasing wax membrane and HIP of constrained castings can effectively control casting deformation and obtain qualified casting. |
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