铝合金金属型加压充型能力的试验研究.pdfVIP

学兔兔 Ju1．2O13 铸 造 VO1．62 NO．7 FOUNDRY 铝合金金属型加压充型能力的试验研究 张海英 ，白 玲 ，邢书明 (】．郑州职业技术学院材料工程系，河南郑州450121；2．北京交通大学机电学院，北京100044) 摘要：铝合金的液态充型能力是决定铝合金铸件力学性能、成形完整性和表面质量的关键因素。本研究采用自主设 计的阿基米德螺旋线试验模具，对液态铝合金熔体在金属型中加压充型能力进行了试验研究。结果表明：液态铝合 金充型能力随着充型压力和浇注温度的增大而增大，随着充型速度的增大而降低；在对充型能力的各个影响因素 中，充型压力是最显著因素，浇注温度和充型速度次之，充型压力和充型速度的交互作用对充型能力的影响较小； 充型压力对液态铝合金熔体充型能力的影响规律可以用线性增函数来描述。 关键词：A356铝合金；金属型；充型能力；工艺参数 中图分类号：TG292 文献标识码：A 文章编号：1001—4977(2013)07—0685—03 Experimental Study on Pressurized Filling Capacity of Aluminum Alloy in Metal Mold ZHANG Hai—ying ，BAI Ling ，XING Shu—ming2 (1．Department ofMaterials Science and Engineering，Zhengzhou Technical College，Zhenzhou 450121，Henan，China； 2．School ofMechanical，Electronic and Control Engineering，Beijing Jiaotong University，Beijing 100044，China) Abstract：Filling capacity of liquid aluminum alloy was the key factor of mechanical properties，forming integrity and surface quality of aluminum alloy castings．In this Paper,the experimental Archimedean spiral mold designed by author was adopted,by experimental study on pressurized filling capacity ofliquid aluminum alloy,the results show that the filling capacity increased with increasing of filling pressure and pouring temperature．and the filling capacity decreased with filling speed increasing．Among all factors that had influence on the filling capacity,filling pressure was the most significant factor．followed by pouring temperature and filling speed and interaction of filling pressure and filling speed was much smal1．Influence of filling pressure on filling capacity could be described as linear increasing function． Key words：A356 aluminum alloy；metal mold；filling capacity；process par