Surface Flatness Control Technology for Double-Curved GRC Panels: Qinglong GRC Curved Surface Precision Control System

Controlling the surface flatness of double-curved GRC panels requires addressing three aspects: mold precision, forming process, and curing regime. Mold profile accuracy ≤1mm/2m, deformation during forming controlled to ≤0.5mm, and warping prevented during curing. Through laser scanning inspection, flatness deviation is controlled within ≤2mm/2m, with smooth transitions in continuous Gaussian curvature regions and no visual abrupt changes.

Control measures: molds are CNC-machined (precision ±0.1mm) with stiffening ribs to prevent deformation; vacuum vibration (vacuum degree -0.08MPa) is applied during forming, with layered casting to control shrinkage; the curing stage maintains constant temperature and humidity (20±2℃, humidity ≥90%), with vertical curing to reduce self-weight deformation. A double-curved curtain wall project passed inspection with a flatness compliance rate of 98%, featuring smooth and aesthetically pleasing surfaces. Qinglong GRC precision control technology ensures curved surface quality.

Mold Precision Assurance

Five-axis CNC machining with profile accuracy of ±0.1mm; sufficient mold rigidity with deformation ≤0.3mm; temperature compensation design to reduce thermal deformation; regular inspection and maintenance to maintain precision. High-precision molds are the foundation.

Forming Process Optimization

Vacuum vibration forming with compaction ≥98%; layered casting with each layer ≤100mm thick; uniform vibration to avoid over-vibration; thickness control with deviation of ±1mm. Optimized processes reduce deformation.

Scientific Curing Regime

Temperature controlled at 20±2℃ with gradient ≤5℃/h; humidity controlled at ≥90% to prevent drying shrinkage; vertical curing with properly positioned support points; demolding strength ≥15MPa to prevent damage. Scientific curing ensures stability.

Advanced Inspection Technology

3D scanning inspection with point spacing ≤10mm; comparison with design models to generate deviation maps; intensified inspection of critical areas; archived data for traceability. Advanced inspection controls quality.

Flatness control requires refined management throughout the entire process. Qinglong GRC's comprehensive system ensures perfect curved surfaces.