Mechanism of burst feeding in ZL205A casting under mechanical vibration and low pressure

作     者：Ru-jia WANG Shi-ping WU Wei CHEN 王汝佳;吴士平;陈伟

作者机构：School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2018年第28卷第8期

页      面：1514-1520页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Projects(51475120 U1537201) supported by the National Natural Science Foundation of China 

主　　题：burst feeding ZL205A alloy mechanical vibration low pressure physical model 

摘      要：The burst feeding behavior of ZL205 A casting under mechanical vibration and low pressure was investigated by casting experiment and physical model. Experimental results indicated that the burst feeding appeared repeatedly during solidification and left a shrinkage cavity with layered structure under mechanical vibration. The castings with less shrinkage and higher density could be achieved through the vibration. The calculation results of physical model showed that the burst feeding could perform spontaneously under vibration while difficultly without vibration in low-pressure die casting. The obstruction of a casting could be broken and the grains could be rearranged by the vibration. And the obstruction could be carried away due to the inner and outer pressure difference, causing a burst feeding.