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轮芯铸件消失模铸造工艺研究
Study on Lost Foam Casting Process of Wheel Core Parts
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- DOI:
- 作者:
- 杨芬芬，李振彦，颜文羽，陈君逸，潘 源
YANG Fenfen, LI Zhenyan, YAN Wenyu, CHEN Junyi, PAN Yuan
- 作者单位:
- 遵义师范学院 工学院，贵州 遵义 563006
College of Engineering and Technology, Zunyi Normal University, Zunyi 563006, China
- 关键词:
- 轮芯；消失模铸造；工艺优化；缩孔缩松；碳渣
wheel core; lost foam casting; process optimization; shrinkage cavity and porosity; carbon slag
- 摘要:
- 针对轮芯铸件的结构特点，采用消失模铸造工艺，利用 ProCAST 数值模拟软件模拟分析了轮芯大法兰面
朝下放置时的凝固过程。 模拟结果显示，铸件厚大部位处存在严重的缩孔缩松缺陷，与试制生产结果相吻合。 针对出现
的缩孔缩松缺陷，将轮芯铸件由法兰面朝下改为朝上放置，使缩孔缩松缺陷得到显著减轻。 进一步对铸造工艺方案进行
优化，在内、外法兰处放置冷铁，并将法兰水平端面改为 30°斜面。 模拟结果表明，优化后铸件内部缩孔缩松缺陷得到完
全消除，并确定了最佳工艺方案。
According to the structural characteristics of wheel core casting, the lost foam casting solidification process with the large flange of the wheel core placed downward is simulated and analyzed by using the numerical simulation software ProCAST. The simulation results show that there are serious shrinkage cavity and porosity defects in the thick part of the casting, which is in good agreement with the trial production result. In view of the shrinkage cavity and porosity defects, the flange of casting is placed upward instead of downward so that the shrinkage cavity and porosity defects are significantly reduced. The casting process scheme was further optimized by placing cold iron at the inner and outer flanges and changing the horizontal end face of the flange to a 30° inclined plane. The simulation results show that the shrinkage cavity and porosity defects in the casting are eliminated thoroughly based on the optimized process, which is the best process scheme.