B级钢轴箱体半固态挤压成型模具的研究  

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

作　　者：胡远猛[1] 张励忠[1] 李海开[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4期92-95,99,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：北京交通大学科研基金"十五"重大项目(230-12)

摘　　要：通过B级钢轴箱体半固态挤压成型的大量试验,得出其模具的主要失效形式为塑性变形、热疲劳裂纹和热熔蚀.理论分析表明,造成B级钢轴箱体半固态挤压成型模具失效的主要原因是模具材料的热强度不够.根据该模具的工作原理及特点,提出了延长模具寿命的有效措施——采用优质复合材料、先进表面处理技术和喷涂适当配比的涂料,其中喷涂适当配比的涂料是提高模具寿命的最有效途径.The main failure forms, such as thermal fatigue crack and thermal ablation of die of axle box body by semi-solid squeezing forming of B grade steel were presented based on lots of experiments. It had been confirmed, theoretically, that these failures were caused mainly by the low thermal strength of die material. According to the working principle and features of the die, some effective measures, such as high-quality composites, advanced surface treatment technology and spraying proper mix proportional painting were taken for life enhancement, especially the spraying measure was the most effective way.

关 键 词：半固态挤压成型 模具 失效形式 

分 类 号：TG249.9[金属学及工艺—铸造]