半固态流变模锻工艺参数对铝合金制件质量的影响  

Influence of semi-solid rheologic squeeze casting process parameters on properties of aluminum alloy and prevention of defects

作　　者：肖黎明[1] 张励忠[1] 张密兰[1] 胡远猛[1] 李海开[1] 韩淑霞[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院半固态成形研究中心,北京100044

出　　处：《轻合金加工技术》2006年第6期15-18,21,共5页Light Alloy Fabrication Technology

摘　　要：分析半固态流变模锻技术的工艺过程及其特点,指出影响铝合金性能的工艺参数主要有:浇注温度、模锻比压、模锻速度、保压时间、模具温度。根据有关试验结果,归纳出采用半固态流变模锻工艺生产的铝合金可能出现的缺陷有:裂纹、冷隔、型腔充填不满、皮下针孔、疏松、缩孔、气孔。针对这些缺陷提出了相应的预防措施。By analyzing the principle of semi-solid rheologic squeeze casting and the process characteristic, the main process parameters that influence properties of aluminum alloy were pointed out： pouting temperature, speed of squeeze casting, dwell time, mould temperature. According to the research results that have made,the potential defects of aluminum alloy produced by semi-solid rheologic squeeze casting were summarized： crack, cold lap, misran, subkin orifice, shrinkage porosity, shrinkage cavity, gas cavity. At last, the corresponding preventive measures of these defects were presented.

关 键 词：半固态流变模锻 半固态浆料 工艺参数 预防 缺陷 

分 类 号：TG319[金属学及工艺—金属压力加工]