Mold-Making Precision Requirements for Curved GRC Decorative Panels: Qinglong Group's Curved Surface Forming and Error Control Technology

The fabrication precision of molds for curved GRC decorative panels directly determines the shape fidelity of components and their installation fit. High industry standards require profile error ≤±1.5mm, contour accuracy ≤0.1% of panel length, and surface roughness Ra≤0.8μm. In the “Red Lantern” double-curved panel project for the Wuhan Han Show Theatre, Qinglong Group used a five-axis CNC machining center (positioning accuracy ±0.05mm), laser scanning inspection (resolution ±0.1mm), and mold surface polishing processes to keep the cumulative installation error of 9,000 irregular panels within ≤3mm, achieving “millimeter-level” precise alignment. The “digital design – precision machining – real-time correction” mold manufacturing system we established has raised the first-pass yield of molds for complex curved components to 98%, providing perfect shape assurance for high-end architecture.

Profile Precision Is the Core of Shape Reproduction

Coordinate measuring machines are used for 100% mold inspection, with radius of curvature error ≤±0.5%. In the wave panel mold fabrication for Hainan Poly Peninsula No. 1, Qinglong Group controlled profile error within ±1.0mm through iterative correction. Wood substitute or aluminum is preferred as the mold material, with thermal deformation coefficients matching GRC.

Contour Accuracy Affects Installation Results

Edge contour tolerance must be ≤1mm/2m, with transition treatment at joints. Qinglong Group adopts parametric design to automatically generate optimized mold profiles. In the Nanning Wuxiang China Resources MixC One project, curved panels were installed with even joints and a smooth visual effect.

Surface Quality Determines the Decorative Effect

Mold surfaces are polished to a mirror finish (Ra≤0.4μm), and release agent is sprayed evenly. High-precision molds are the foundation of artistic expressiveness, and Qinglong Group remains a leader in this field.