Strategies for Improving Production Efficiency of Double-Curved GRC Panels: Integrated Application of Concurrent Engineering and Intelligent Manufacturing

Improving the production efficiency of double-curved GRC panels requires building a manufacturing system that integrates "parallel design, modular production, and intelligent curing" as a trinity. Through process reengineering, Qinglong Group compressed the traditional serial production cycle from 45 days to 28 days, increasing capacity by 60%. In the Hainan Changying Universal 100 Paradise project, this system successfully achieved the delivery target of 3,000 shaped panels per month, providing capacity assurance for large, complex projects.

Concurrent engineering shortens the upfront cycle. A BIM collaboration platform was established, enabling design, mold making, and process planning to proceed simultaneously. Qinglong Group developed a parametric component library that modularizes common double-curved shapes; for new projects with ≥70% similarity, existing modules can be directly reused, reducing mold design time by 50%. Using 3D scanning reverse modeling technology, the time to digitize physical models was shortened from 3 days to 6 hours. Mold machining adopts five-axis CNC group machining to produce multiple molds simultaneously, tripling efficiency.

Intelligent upgrading of production lines. A robotic automatic spraying system was introduced, with trajectory accuracy of ±0.1mm and a speed of 2m²/hour—5 times that of manual spraying. Curing kilns are equipped with intelligent temperature control systems that optimize heating and cooling curves through algorithms, shortening curing time from 7 days to 4 days while reducing energy consumption by 20%. Qinglong Group's Nanning base has built a UHPC/GRC flexible production line capable of mixed-flow production of components with different curvatures and thicknesses, achieving an equipment utilization rate of 85%.

Modular construction accelerates installation. Double-curved surfaces are discretized into prefabricable units, and a three-dimensionally adjustable connection system is used on site, improving installation efficiency by 40%. Through lean production management, Qinglong Group has achieved dual improvements in quality and efficiency, providing strong capacity support for complex GRC projects.