大型筒体锻件空心钢锭锻造工艺探索  

Investigation on hollow steel ingot forging process of heavy cylinder forging

作　　者：刘敏[1,2] 董晓亮[3] 马庆贤[1,2] 

机构地区：[1]清华大学机械工程系,北京100084 [2]清华大学先进成形制造教育部重点实验室,北京100084 [3]鞍钢重型机械有限责任公司,鞍山114042

出　　处：《塑性工程学报》2013年第6期1-8,共8页Journal of Plasticity Engineering

基　　金：国家科技重大专项资助项目(2011ZX04014-051);国家重点基础研究发展计划资助项目(2011CB012903)

摘　　要：针对反应堆压力容器等大型筒体锻件采用实心钢锭存在的钢锭利用率低和生产周期长等缺点,对空心钢锭锻造工艺进行优化。通过铅试件物理模拟和DEFORM-3D数值模拟,研究空心钢锭在不同压下率、芯轴直径、砧宽、芯轴转角、接砧量和布砧方式下镦粗、芯轴拔长和芯轴扩孔时的变形规律,提出了避免空心锻造缺陷的方法,可为国产大型筒体锻件的空心钢锭锻造工艺规范制定提供参考依据。Aiming at the disadvantages of low utilization ratio of steel ingot and long production period in the solid ingot forging process of heavy cylinder forging such as reactor pressure vessel, a new forging process using hollow steel ingot was investigated. By means of modeling of lead sample and DEFORM-3D numerical simulation, the deformation law for hollow steel ingot in the processes of upsetting, mandrel drawing and mandrel broaching at different reduction ratios, mandrel diameters, anvil widths, mandrel rotation angles, anvil overlappings and anvil distributions was investigated. And the effective way to avoid hollow forging defects was found. The research results can provide reference for the hollow steel ingot forging process establishing of national heavy cylinder forgings.

关 键 词：大型简体锻件 空心钢锭 物理模拟 锻造工艺 数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]