压铸镁合金摩托车轮毂缺陷分析及工艺改进措施
Defect Analysis and Casting Process Optimization of Die Casting Mg Alloy Motorcycle Wheel
徐绍勇 1，2， 龙思远1， 廖慧敏1
点击：3188次 下载：0次
作者单位：（1.重庆大学 材料科学与工程学院，重庆 400030；2.重庆硕龙科技有限公司，重庆 400035）
中文关键字：镁合金； 轮毂； 缺陷分析
英文关键字：Mg alloy; wheel; flaw analysis
中文摘要：对压铸镁合金摩托车轮毂内部缺陷进行了实验观察，并用计算机模拟方法分析了轮毂工艺过程及缺陷形成。研究表明：轮毂的工艺缺陷主要为缩孔、缩松以及凝固过程中收缩导致的裂纹缺陷，主要分布在轮辋、辐条交汇的热节部位。提出了工艺改进措施和缺陷防止方法，经数值模拟和实际生产验证，改进后的工艺完全解决了轮毂缺陷问题。
英文摘要：The defects in die casting magnesium alloy motorcycle wheels were observed by experiment, and the computer simulation techniques were used to analyze its casting process and defect formation. The results indicate that the casting defects are mainly shrinkage porosity and cracks caused by solidification shrink, which mainly presents in the hot spot between the spoke and the rim. Some optimizing process and preventing ways were put forward. The results show that the defects can be totally eliminated.