大规格气阀坯电镦成形质量控制研究综述  

Review on quality control research of electric upsetting of large⁃scale air valve billet

作　　者：权国政[1,2] 雷盛 蒋立鹤 QUAN Guo-zheng;LEI Sheng;JIANG Li-he(Chongqing Key Laboratory of Advanced Mold Intelligent Manufacturing,School of Material Science and Engineering,Chongqing University,Chongqing 400044,China;Jiangsu Advanced Manufacturing Engineering Technology Research Center for Marine Power System Parts,COSCO Shipping Marine Equipment&Spares(Nanjing)Co.,Ltd.,Nanjing 211121,China)

机构地区：[1]重庆大学材料科学与工程学院先进模具智能制造重庆市重点实验室,重庆400044 [2]南京中远海运船舶设备配件有限公司江苏省船舶动力系统零件先进制造工程技术研究中心,江苏南京211121

出　　处：《塑性工程学报》2023年第6期2-9,共8页Journal of Plasticity Engineering

基　　金：国家自然科学基金面上资助项目(52175287);重庆市自然科学基金面上资助项目(CSTB2022NSCQ-MSX0593)。

摘　　要：制坯作为气阀成形的关键工序,其成形质量决定着气阀的服役性能和寿命。通过分析热挤压和电镦等成形工艺的优缺点可知,电镦相较于其他成形工艺更适用于大规格气阀坯成形。而随着气阀坯规格的增大,电镦件成形质量也愈加难以控制。针对表面波浪等形状缺陷和晶粒粗大等微观缺陷对其进行成因分析,从成形形状、晶粒控制和形状-晶粒协同控制3个方面综述了大规格气阀坯电镦成形质量的控制方法,并进一步阐述了电镦工艺智能优化方法,为大规格气阀坯电镦成形的实际生产提供参考。As the key process of air valve forming,the forming quality of preforming determines the service performance and life of air valve.By analyzing the advantages and disadvantages of hot extrusion and electric upsetting,it can be seen that electric upsetting is more suitable for large⁃scale air valve billet forming than other forming processes.With the increase of air valve billet size,the forming quality of electric upsetting parts is more difficult to control.The causes of surface wave defects and coarse grain defects were analyzed.The qual⁃ity control methods of large⁃scale air valve billet by electric upsetting were summarized from three aspects:forming shape,grain control and shape⁃grain cooperative control,and the intelligent optimization method of electric upsetting process was further expounded,which provides reference for the actual production of large⁃scale air valve billet by electric upsetting.

关 键 词：电镦 气阀坯 成形质量 工艺参数 晶粒尺寸 智能优化 

分 类 号：TK426[动力工程及工程热物理—动力机械及工程] TG306[金属学及工艺—金属压力加工]