制动钳体砂眼缺陷工艺改进  

Process Improvement of Sand Hole Defect in Brake Caliper

作　　者：周技 范金辉[2] 袁修坪[3] 吴兴远 梁鹏飞 ZHOU Ji;FAN Jinhui;YUAN Xiuping;WU Xingyuan;LIANG Pengfei(Guangde Asia Pacific Foundry Co. Ltd., Guangde 242000, China;College of Mechanical Engineering, Donghua University, Shanghai 201620, China;Kunshan Xinsanxin Machinery Mold Co. Ltd., Kunshan 215337, China)

机构地区：[1]广德亚太铸造有限公司,安徽广德242000 [2]东华大学机械工程学院,上海201620 [3]昆山新三信机械模具有限公司,江苏昆山215337

出　　处：《铸造技术》2018年第6期1250-1253,共4页Foundry Technology

摘　　要：通过扫描电子显微镜和能谱分析,研究制动钳体砂眼缺陷,并分析其形成原因。结果表明,在型砂性能稳定的前提下,对浇注系统和砂芯结构进行改善,改变内浇道尺寸控制铁液流速、阻挡砂粒进入型腔,增加砂芯芯头定位面积,设置防压环等措施,可有效减少制动钳体的砂眼缺陷。The sand hole defects of brake caliper were studied by SEM and EDS, and the reason of the formation was analyzed. The results show that the sand hole defect of brake caliper can be reduced by improving process of gating system, blocking the sand into the cavity and changing the size of the inner runner to control the flow rate of molten iron.

关 键 词：制动钳体 铸造工艺 砂眼 

分 类 号：TG255[金属学及工艺—铸造]