What Are the Differences in Mold Requirements Between UHPC Single-Curved and Double-Curved Panels? — Key Points of Curved Mold Design

There are significant differences in mold requirements between UHPC single-curved panels and double-curved panels, mainly reflected in machining complexity, precision control, and cost investment. Based on experience from multiple curved-surface projects, Qinglong Group considers single-curved panel molds relatively simple, while double-curved panel molds must account for Gaussian curvature variations, with fabrication difficulty and cost 50%-80% higher.

Single-curved panel molds can be constructed using combinations of straight-line elements, with a machining precision requirement of ±1mm. Double-curved panel molds require five-axis simultaneous machining, with a precision requirement of ±0.5mm. In Qinglong Group's Wuhan project, single-curved panel molds took 3-5 days to fabricate, while double-curved ones required 7-10 days. Mold materials also differ; double-curved panels require high-stability epoxy resin with a heat deflection temperature of ≥80℃.

The demolding systems differ markedly. Single-curved panels can use translational demolding, while double-curved panels require multi-directional split molds. In its Hainan project, Qinglong Group developed a modular double-curved mold with over 200 movable modules to ensure smooth demolding. This differentiated design guarantees the precise forming of all types of curved panels.