Strategies for Improving Production Efficiency of Double-Curved GRC Panels

Improving the production efficiency of double-curved GRC panels is the key to large-scale application. Through process innovation and digital technology, Qinglong Group has shortened the double-curved panel production cycle from the traditional 10-12 days to 6-8 days, increasing capacity by more than 40%. This achievement stems from the systematic optimization of mold technology, production processes, and curing regimes.

Mold technology innovation is the foundation of efficiency. Traditional handmade molds require 7-10 days, but Qinglong Group introduced 3D printing rapid mold-making technology, reducing the mold-making cycle to 3 days. In the Nanning Wuxiang China Resources MixC project, a modular combined mold design was adopted: by adjusting the movable modules, the same set of molds can produce panels with 5 curvature combinations, tripling mold utilization. High thermal conductivity epoxy resin was selected as the mold material, shortening the demolding cycle from 24 hours to 16 hours and greatly improving mold turnover.

Production process optimization delivers efficiency gains. A robotic automatic spraying system increases spraying efficiency 5 times compared with manual operation, with fiber distribution uniformity reaching over 95%. Qinglong Group developed a vibrating table dedicated to double-curved panels, enabling simultaneous multi-dimensional vibration and reducing vibration time from 90 seconds to 60 seconds. In the Shenzhen Yirui Biotechnology Building project, optimizing the process flow achieved a daily output of 50 square meters of double-curved panels, setting a new industry record.

Curing regime innovation shortens cycles. Microwave-assisted curing technology reduces the standard curing time from 72 hours to 48 hours. The BIM system precisely controls the temperature and humidity of the curing kilns, raising the heating rate from 10°C/h to 15°C/h while ensuring the panels do not crack. These innovations significantly improve the production efficiency of double-curved GRC panels while ensuring quality.