What Are the Fabrication Differences Between Single-Curvature and Double-Curvature GRC Panels?

Single-curved and double-curved GRC panels differ significantly in processing technology, mainly in three aspects: mold making, forming technology, and quality control. Based on experience from multiple curved panel projects, Qinglong Group has summarized the key technical differences between the two.

Mold making is the primary point of difference. Single-curved panel molds can use simple bent formwork, with a production cycle of 3-5 days; double-curved panels require five-axis CNC machining centers to produce precision molds, with a cycle of 7-10 days. In the Guangxi New Media Center project, we developed modular aluminum alloy molds for double-curved panels, with more than 200 movable modules, ensuring shape accuracy.

Forming technology determines product quality. Single-curved panels can use conventional spraying processes, while double-curved panels require robot-directed spraying. In the Shanghai Century Plaza project, Qinglong Group optimized fiber distribution using a six-axis robot, keeping the fiber volume ratio of double-curved panels above 2.5% and achieving 90% strength uniformity.

Quality control standards differ. Single-curved panels allow a tolerance of ±3mm/2m, while double-curved panels require stricter standards of ±1.5mm/2m. We use 3D laser scanning to inspect surface accuracy, ensuring every panel meets design requirements. This refined quality control enables double-curved panels to perfectly realize the design effect in complex buildings.