童媛,徐哲,陈烜,等.行星架熔体成形过程数值模拟研究[J].精密成形工程,2025,17(1):214-222.
TONG Yuan,XU Zhe,CHEN Xuan,et al.Numerical Simulation of Planetary Frame Melt Molding Process[J].Journal of Netshape Forming Engineering,2025,17(1):214-222. |
| 行星架熔体成形过程数值模拟研究 |
| Numerical Simulation of Planetary Frame Melt Molding Process |
| 投稿时间：2024-05-08 |
| DOI：10.3969/j.issn.1674-6457.2025.01.023 |
| 中文关键词: ProCAST 行星架 数值模拟 铸造缺陷 |
| 英文关键词: ProCAST planetary frame numerical simulation casting defects |
| 基金项目:国家自然科学基金(52274401);中煤科工集团上海有限公司科研开发项目(0209080422Y);徐州343产业发展项目(gx2023002) |
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| 中文摘要: |
| 目的 针对某型号行星架铸造工艺质量不稳定、铸件易出现缺陷的问题，对行星架形状结构和材质进行分析，利用砂型铸造与数值模拟仿真计算，预测铸件缩松缩孔分布位置和严重程度，并提出合理的铸造工艺方案。方法 利用ProCAST铸造模拟软件对该型号行星架铸造工艺进行模拟计算分析，研究铸件在充型、凝固过程中速度场、温度场、固相率和缺陷的分布情况，并与实际生产铸件进行缺陷区域比较，根据模拟结果对铸件的铸造工艺进行优化。结果 通过在行星架顶部添加冒口以及在侧板区域添加补贴和冒口，有效地解决了行星架下半部区域的缺陷，但侧板上方冒口影响铸件上半部区域的凝固顺序，导致行星架上半部分出现了较大尺寸的缩松缩孔缺陷，后续修正顶冒口尺寸以及添加侧冒口后，行星架顶部圆柱和侧板内部缺陷得到有效控制，下法兰盘内部缺陷体积由50.66 cm3降为0 cm3，满足生产需求。结论 通过铸造模拟有效指导了行星架铸件的生产实践，优化了生产工艺。 |
| 英文摘要: |
| In order to solve the problems of unstable casting process quality and easy defects in a certain model of planetary frame, the work aims to analyze the shape, structure and material of the planetary frame and predict the distribution position and severity of shrinkage cavity of the casting by sand casting and numerical simulation calculation and propose a reasonable casting process scheme. ProCAST casting simulation software was employed to simulate, calculate and analyze the casting process of this model of planetary frame and the speed field, temperature field, solid phase rate and the distribution of defects of the casting in the filling and solidification process were studied, which were then compared with the defect area in the actual production of casting. Next, the casting process was optimized according to the simulation results. By adding risers at the top of the planetary frame and subsidies and risers in the side plate area, the defects in the lower half of the planetary frame were effectively solved. However, the riser above the side plate affected the solidification sequence of the upper half of the casting, which led to the shrinkage cavity defects in the upper half of the planet carrier. After the subsequent revision of the top riser size and the addition of side risers, the internal defects in the top cylinder and side plate of the planetary frame were effectively controlled, and the internal defect volume of the lower flange was reduced from 50.66 cm3 to 0 cm3, which met the production requirements. The casting simulation effectively guides the production practice of planetary frame castings and optimizes the production process. |
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