【毕业论文】400m315CrMoV球罐焊接工艺设计.docVIP

常州机电职业技术学院 - PAGE 9 -第 PAGE 9 页 共 NUMPAGES 54 页 勤奋、和谐、求实、进取 常州机电职业技术学院 毕业设计（论文） 作 者： 学号： 系 部： 模具技术系 专 业： 焊接及其自动化 题 目： 400m3 15CrMoV球罐焊接工艺设计 指导者： 评阅者： 2013年 10 月 毕业设计（论文）中文摘要 摘要：本次设计的400m3球罐用于储存天然气，其球壳板的材质为15CrMoV，本文对其母材的焊接性作了简要的分析，并在此基础上选择了球罐焊前预热的温度，以及焊接方法和焊接材料。预热温度为120到140℃，焊接方法为焊条电弧焊，焊条为E5015。 根据工厂的生产经验和相关标准制定了400m3球罐的生产工艺流程。在整个生产过程中，球壳板的压制成形、球罐的组装与球罐的焊接属于生产过程中的重点与难点，在本文中都进行了详细的分析和论述。 球壳板成形采用局部成形的方法。球罐组装分为零部件组装和整体组装两部分整体组装采用整球组装的方法，需在现场进行。并且根据球罐上每条焊缝的不同特点，制定了各条焊缝的具体焊接方法，并选择了焊接工艺参数。 球罐组装、焊接之后，需进行焊后处理，包括无损检测，焊后热处理，以及耐压力试验等，本文也都进行了简要的分析和说明，并介绍了相应的处理方法和注意事项。 关键词：球罐 成形 工装 焊接工艺 毕业设计（论文）英文摘要 Abstract: The design of the 400m3 spherical container used for store Natural Gas, its spherical shell plate material is 15CrMoV. In this paper, the weldability of the base metal was analysed briefly, and on this foundation, the preheat temperature before the spherical container for welding, the welding process, and the welding material were selected. The preheat temperature is 120~140℃, the welding process is the shield metal arc welding, the covered electrodes are E5015. The produce technologic course of the 400m3 spherical container was compiled according to the experience of the manufacturing plant and related standards. In the entire production process, the press of forming spherical shell plate, the installation and welding of spherical container belong to important and difficult in the production. In this paper, they were carried out a detailed analysis and exposition. The methods of forming the spherical shell plate was part forming. The installation of the spherical container was divided two parts, they are the parts installation and the whole installation, the whole installation use of the entire of the ball installation method, and it should be conducted at the scene. Accordi