What Is the Principle of Digital Mould Technology for Double-Curved GRC Shapes?

Digital mold technology for double-curved GRC shapes is the core supporting technology for realizing special-shaped decorative components in today's high-end public buildings, and also a key breakthrough for the GRC (Glass Fiber Reinforced Concrete) industry to accurately translate design creativity into reality. As an industry enterprise with 28 years of full-chain GRC service experience, Qinglong GRC manufacturer has accumulated extensive knowledge of the principles and implementation logic of this technology through the delivery of hundreds of landmark-level projects. Unlike the pain points of traditional manual mold replication—low precision, high waste, and long cycles—digital mold technology fundamentally solves the challenge of balancing consistency, precision, and cost for double-curved shapes.

The core principle of digital mold technology for double-curved GRC shapes can be divided into three key stages. The first is the parametric modeling and matching stage, in which tools such as Rhino and Grasshopper convert the double-curved shapes from the design side into editable 3D parametric models, while simultaneously completing preliminary work such as curvature verification, draft angle prediction, and joint pre-layout, ensuring that model data connects directly to the subsequent production side and avoiding errors caused by repeated surveying in traditional workflows. The second is the digital machining stage of molds. Based on the path data output by the parametric models, the mold substrate is formed in one piece using processes such as CNC milling and 3D printing. Compared with manual mold making, the surface precision of molds can be controlled within 0.5mm, with a minimum machinable curvature radius of ≤300mm, fully meeting the fineness requirements of double-curved shapes. The last is the modular mold assembly and verification stage, in which BIM technology is used for pre-assembly simulation of multiple molds to prevent misalignment issues during on-site joining in advance, while molds can be disassembled in a standardized manner, greatly reducing production and transportation costs.

At present, this technology has been maturely applied in projects involving GRC exterior wall panels and special-shaped decorative components for numerous domestic theaters, commercial complexes, and landmark buildings. It has not only shortened the production and delivery cycle of double-curved GRC components by about 40%, but also reduced the joint error rate after component installation to 1/10 of that of traditional processes. As a unit that participated in formulating the "Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC)", Qinglong GRC relies on its annual production capacity of 600,000 square meters to realize the full-process implementation of double-curved GRC shapes from detailed design to construction and installation, providing stable technical support for designers and owners. For more industry information: Add WeChat qlfsbl123