In shipbuilding, hull quality is the lifeline, while precision control and modular construction are the two core technologies that safeguard this lifeline. Jiangsu Haizhongzhou Shipping Industry Co., Ltd. has deeply integrated these two technologies to build an efficient and precise modern shipbuilding system.
1. Full-Process Precision Management – Eliminating Errors at the Source
Jiangsu Haizhongzhou Shipping Industry Co., Ltd. has introduced advanced total station measurement systems and 3D precision analysis software, shifting precision control from the traditional "measurement after block assembly" to the entire process covering "cutting, forming, sub-assembly, and block assembly."
Digital Marking: High-precision CNC cutting and marking machines are used to ensure that the cutting and marking errors of each steel plate are controlled within 0.5 mm.
Simulated Lift: Before block final assembly, 3D simulation software is used to carry out simulated lifts, accurately calculating welding shrinkage and deformation, and making allowance corrections in advance. This has reduced the rework rate of final hull assembly in the dock by more than 70%, significantly shortening the dock occupancy period.
Real-Time Feedback: Measurement data from each key process is uploaded in real time to a central database. Once a deviation trend is detected, adjustments are immediately made to subsequent processes, forming a closed-loop control system.
2. Integration of Hull, Outfitting, and Coating – Combined with Large-Scale Modular Construction
Jiangsu Haizhongzhou Shipping Industry Co., Ltd. vigorously promotes the integrated prefabrication of intermediate products centered on the "hull, outfitting (piping/equipment), and coating" as a complete unit.
Pre-Outfitting: During the block fabrication stage, outfitting items such as piping, cable trays, and equipment foundations are installed as much as possible in advance. Haizhongzhou's pre-outfitting rate has increased from the industry average of 60% to over 85%, greatly reducing the need for overhead welding and cross-operations inside narrow hull spaces.
Modular Block Assembly: Multiple blocks are pre-assembled at the assembly site into large ring sections or three-dimensional modules weighing hundreds or even thousands of tons (e.g., engine room modules, bow modules, superstructure modules). These modules integrate all systems including structure, piping, ventilation, and electrical systems, and are lifted into the dock as a whole using heavy-duty gantry cranes. This "modular assembly" shipbuilding approach has reduced the number of lifts inside the dock by 40%, achieving an efficient "building block" style of construction.