半固态挤压铸造B级钢轴箱体的成形研究  

Study on Forming of Axle Box Body of B Grade Steel by Semi-Solid Squeeze Casting

作　　者：李海开[1] 张励忠[1] 胡远猛[1] 陈宇[1] 肖黎明[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,北京100044

出　　处：《北京交通大学学报》2005年第1期102-106,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：北方交通大学"十五"科技计划重大项目(230 12)

摘　　要：采用半固态挤压铸造工艺对B级钢轴箱体进行了成形研究,获得了形状完整、轮廓清晰的铸件,但铸件表面有明显的裂纹和冷隔等缺陷.针对这些缺陷进行了深入的理论分析,分析表明:压头脱出力、模具预热温度、比压等是影响铸件质量的关键因素.在理论分析的基础上进行了大量实验,结果表明:优化压头脱出力、模具预热温度、比压等成形工艺参数可以消除缺陷.The study on the forming of axle box body of B grade steel was conducted by semi-solid squeeze casting. The cast with complete shape and clear contour was obtained. But some apparent defects e.g. crack and cold laps were found on the surfaces of the cast. After an in-depth theoretical analysis on these defects, some critical influence factors such as the ejection force of punch, the temperature of mold, forming pressure etc. were determined. A great deal of experiments was carried out on the basis of theoretical analysis. It is safe to draw the conclusion that these defects could be eliminated by optimizing the processing parameters e.g. the ejection force of punch, the temperature of mold, forming pressure etc.

关 键 词：半固态 黑色金属 挤压铸造 缺陷分析 

分 类 号：TG249.9[金属学及工艺—铸造]