冷冲压S30408封头在应变强化容器中的应用研究  

Study on Application of Cold Stamping S30408 Head in Strain-hardening Pressure Vessels

作　　者：白龙[1] 江楠[2] 倪进飞 BAI Long JIANG Nan NI Jin -fei(The College of Post and Telecommunication, Wuhan Institute of Technology, Wuhan 430073, China School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663, China)

机构地区：[1]武汉工程大学邮电与信息工程学院,湖北武汉430073 [2]华南理工大学机械工程学院,广东广州510640 [3]广州特种承压设备检测研究院,广东广州510663

出　　处：《压力容器》2016年第10期24-30,共7页Pressure Vessel Technology

摘　　要：采用ANSYS/LS-DYNA建立了S30408封头冷冲压的数值计算模型,并通过试验验证了所建模型能够较准确地反映封头冷冲压过程。用该模型模拟了3种常用封头在冷冲压过程中产生的塑性变形,并分析了这3种常用封头在冲压过程中球冠区发生塑性变形及变形不同的原因。经冷冲压成形后,2∶1碟形封头在球冠区产生了充分而均匀的塑性变形,使封头球冠区得到了有效强化,屈服强度明显提高。说明在应变强化容器中,使用冷冲压的2∶1碟形封头,既可以免于封头成形后热处理,又解决了因封头厚度比筒体大,强化压力无法充分强化封头球冠区的问题。A finite element method is developed and validated to reflect cold stamping process of heads through ANSYS/LS - DYNA. Based on this method, the plastic deformation of three kinds of normallyused heads is studied and the reason why plastic deformation varies with the type of head isalso analyzed. It is found that 2：1 dished head can gain sufficient and uniform plastic deformation through cold stamping cold-stretching process because of its thickness, as well as a method to avoid heat treatment after coldforming.

关 键 词：S30408 2:1碟形封头 冷冲压成形 应变强化 

分 类 号：TH49[机械工程—机械制造及自动化] TG386.4[金属学及工艺—金属压力加工]