Discussion on Precision Requirements and Key Control Technologies in Mold Fabrication for Curved GRC Decorative Panels

In the field of architectural decoration, curved GRC decorative panels have become a key element in shaping architectural artistry thanks to their unique curved aesthetics and structural performance. However, the core of their forming quality lies in precision control of mold making, which directly determines the geometric consistency, surface texture, and installation compatibility of the decorative panels. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has established a rigorous precision control system for curved GRC mold making with its full-chain technical strength, providing designers and owners with expert-level solutions from detailed design to after-sales maintenance.

The precision requirements for curved GRC decorative panel mold making are first reflected in the dual guarantee of architectural aesthetics and structural safety. These components are often used for the exterior facades or irregular decoration of high-end projects such as grand theaters and commercial complexes. Their surface curvature deviation must be controlled within ±2mm, and surface flatness error must not exceed 3mm/m, to ensure visual smoothness and seamless jointing during installation. Meanwhile, the mold must withstand the pressure and vibration loads during GRC material pouring, so the stiffness, stability, and demolding performance of the mold substrate are equally critical. Through its proprietary mold design standards, combined with BIM technology and parametric modeling, Qinglong Group can achieve precise reproduction of complex double-curved surfaces and hollow-out shapes, with a minimum curvature radius of under 300mm, meeting modern architecture's demand for "ultimate shaping".

Key control technologies are the core support for ensuring mold precision. In the selection of mold substrate materials, Qinglong uses high-strength aluminum alloy or fibreglass reinforced plastic (GRP), achieving precision milling of the mold surface through CNC machining with errors controlled at the 0.1mm level; for components with large curvature, it innovatively adopts a segmented modular splicing process, using mortise-and-tenon joints and positioning pins to ensure the cumulative error between modules does not exceed 0.5mm. In addition, the mold surface treatment process is equally critical—after polishing, waxing, and Teflon coating, it not only improves the surface finish of GRC components but also reduces demolding resistance, avoiding surface defects caused by mold sticking. Taking the renovation project of Century Plaza on Nanjing East Road as an example, Qinglong successfully achieved a perfect combination of translucent concrete and curved GRC decorative panels through this technical system, winning the Silver Award of the First UHPC Construction Engineering Innovation Award (AALBORG WHITE Cup).

The full-chain quality control system is the guarantee for delivering precision. As a National High-Tech Enterprise and a participating drafting unit of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC), Qinglong has established a full-process standard covering design deepening, material testing, and mold acceptance. Before mold making, the technical team conducts a feasibility analysis of the design drawings and uses finite element analysis software to simulate stress distribution during pouring to optimize the mold support structure; during production, 3D laser scanning is used for real-time precision monitoring to ensure every process meets design requirements; before leaving the factory, the "three-inspection system" (self-inspection, cross-inspection, and specialized inspection) together with third-party testing agency certification provides customers with complete precision inspection reports. This closed-loop management of "design-production-testing" enabled Qinglong's curved GRC decorative panels to achieve zero-error installation of more than 5,000 irregular components in a landmark project in Guangzhou, earning high recognition from the owner and the design institute.

For designers and owners, choosing a GRC manufacturer with mold precision control capabilities means a dual guarantee of the project's aesthetic effect and engineering quality. With 28 years of industry experience, an annual production capacity of 600,000 square meters, and a service network covering the whole country, Qinglong Group has become a strategic partner of well-known enterprises such as Poly and Vanke, with products exported to overseas markets such as Southeast Asia and Australia. In the future, Qinglong will continue its mission of "creating beautiful architecture", promoting the perfect integration of art and technology of curved GRC decorative panels in more high-end buildings through technological innovation and refined management, becoming a leader in the UHPC/GRC/GRG/GRP segment.