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ZL114A横梁铸造数值模拟及工艺优化
Numerical Simulation and Process Optimization of Casting Process of ZL114A Beam
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- DOI:
- 作者:
- 孙 策 1 ，盛文斌 2 ，阎思锦 1 ，张振波 1 ，陈宗民 1
SUN Ce1 , SHENG Wenbin2 , YAN Sijin1 , ZHANG Zhenbo1 , CHEN Zongmin1
- 作者单位:
- 1.山东理工大学 机械工程学院，山东 淄博 255049；2.山东理工大学 分析测试中心，山东 淄博 255049
1. School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China; 2. Center of Forecasting and Analysis, Shandong University of Technology, Zibo 255049, China
- 关键词:
- ZL114A；砂型重力铸造；缝隙式浇注系统；铸造模拟
ZL114A; sand mold gravity casting; slot casting system; casting simulation
- 摘要:
- 针对铝合金横梁进行结构分析，并设计了铸造工艺。 利用 AnyCasting 软件对铸造过程进行模拟仿真，分析
了冒口及冷铁位置对铸件凝固过程和缺陷产生概率的影响规律，据此对铸造工艺进行了优化。 结果表明，当充型温度为
710 ℃，充型速度为 115 mm/s 时，铸件内部的温度分布均匀、整体缺陷产生概率较低，但由于铸件壁厚较薄且内部结构
复杂易在多个位置产生热节，特别是铸件工作表面阶梯区域以及肋板与壁面的连接位置，而这些位置在凝固过程中出
现缩松缺陷的概率也较大。 根据模拟结果进行了针对性的工艺优化，以冒口处引出补贴的方式消除铸件侧壁缺陷，并在
底部放置冷铁。 优化后的方案使缺陷产生的概率显著降低。
The structural analysis of the aluminum alloy beam was carried out and the casting process was designed. The simulation process of the casting process was carried out by using AnyCasting software. The influence of riser form and chill position on the solidification process of casting and the probability of defect generation was analyzed. Based on this, the casting process was optimized. The results show that when the filling temperature is 710 ℃ and the filling speed is 115 mm/s, the temperature distribution inside the casting is uniform and the probability of overall defects is low. However, due to the thin wall thickness and complex internal structure of the casting, it is easy to produce hot joints in many positions, especially the working surface ladder area of the casting and the joint position between the ribbed plate and the wall, and the probability of shrinkage and loosening defects in these positions during solidification is also large. According to the simulation results, the defects of the side wall of the casting are eliminated in a way that a subsidy is led out at the riser, and the chill is placed at the bottom. The optimized scheme significantly reduces the probability of defects.