What Should the Curvature Error of GRC Shaping Be Controlled Within? Qinglong GRC Curvature Precision Control Standards

Curvature deviation of GRC shapes is controlled in tiers according to shape importance: general shapes ≤±3mm/2m, important shapes ≤±2mm/2m, and critical shapes ≤±1mm/2m. A dedicated curvature gauge is used, measuring by the chord-length method, to ensure smooth, flowing curved surfaces. Accurate mold fabrication and strict process control achieve the geometric accuracy required by the design.

In specific projects, Qinglong GRC uses three-coordinate measurement to check mold curvature (accuracy ±0.1mm), with curvature spot checks on every 10 pieces during production. In a large curved sculpture project with a maximum radius of curvature R=800mm, inspection showed the curvature deviation controlled within ±1.5mm/2m, fully meeting the precision requirements of the artistic shape. Strict curvature control ensures both the artistic effect and structural performance of the shapes.

Mold Curvature Control

Mold fabrication accuracy ≤±0.5mm/2m. CNC machining ensures accurate profile surfaces. Mold wear is inspected regularly and repaired promptly. Mold precision records are maintained for traceable management.

Production Process Control

Uniform vibration to avoid deformation. Demolding strength ≥15MPa to prevent damage. Temperature and humidity controlled during curing to reduce shrinkage. Vertical curing reduces deformation from self-weight.

Inspection Method Standards

Curvature templates are used for inspection with a gap ≤1mm. Key points are measured by three-coordinate measurement with accuracy ±0.1mm. A total station measures large-scale curvature with point spacing ≤500mm.

Deviation Adjustment Measures

Adjustable connectors are used during installation with an adjustment range of ±10mm. Gradual adjustment at joints avoids abrupt changes. Local grinding and trimming are controlled within a range that does not affect structural thickness.

Curvature accuracy determines the shape effect. Qinglong GRC enforces strict control to realize the design intent.