45000t集装箱滚装船水密门精度控制

Precision Control of the Watertight Door on 45000t Con-Ro Ship

为更好地控制集装箱滚装船门框结构的安装精度,以45000t集装箱滚装船中只包含水密门结构的分段为例进行水密门精度控制研究。通过研究该分段的建造方式,改进分段的建造工艺,合理安排门框结构在分段建造过程中的安装顺序,进而缩减结构变形;同时,利用精度测量仪器进行跟踪测量,保证始终把精度控制在有效范围内。对焊接过程中采用的焊接方法进行研究,改进焊接工艺,采取逐步退焊法控制焊接热量,进而减少焊接变形。通过对分段水密门门框结构的安装工艺及焊接工艺进行研究,将理论与实践相结合,总结出一套行之有效的建造工艺,确保分段门框结构安装精度得到有效控制,保证水密门的性能,为该系列船后续的分段建造提供参考。

In order to control the installation precision of the door frame inside hull structures,a study was carried out on the watertight door precision control of a45000t Con-RO ship block that only contains watertight door structures.The construction method of the block was analyzed and the construction technique was improved by properly arranging the installation procedure of the door frame structure construction to reduce structure deformation.At the same time,a device with high accuracy was used for the measurement followed to make sure that the precision is constantly controlled within the allowance.The welding method was also studied to improve the welding technique,where gradual back welding method was used to control the heat so as to reduce welding deformation.The studies on watertight door frame structure installation technique and welding technique combines theory with practice and derives a series of valid construction techniques which can ensure the effective precision control of the door frame installation and its watertight performance and provide reference for the subsequent block construction of this series of ships.