What Are the Mold Parting Principles for Complex GRC Shapes? Mold Design and Shape Optimization Strategies of Qinglong Group

Mold parting design for complex GRC shapes follows three major principles: "manufacturability, demoldability, and economy," with specific requirements including draft angle ≥3°, parting lines avoiding key visual effects, and minimizing the number of modules. In the red double-curved panel project for the Wuhan Han Show Theatre, Qinglong Group used parametric algorithms to optimize 9,000 irregular-shaped panels into 127 standard mold modules, reducing the number of molds by 65% and cutting production costs by 40% while ensuring shape fidelity of ≥95%. Scientific parting design is the key to balancing artistic effect with manufacturing feasibility.

Parting line position selection is the primary consideration. We prioritize placing parting lines in visually secondary areas such as shape transitions or shadow lines to avoid affecting the main viewing surfaces. In the artificial stone shaping project for Hainan Changying Universal 100 Theme Park, BIM technology was used to align parting lines with the direction of stone textures, achieving concealed parting. For deep relief shapes, sliding cores or loose-piece molds are used to ensure smooth demolding.

Modular design enhances economy. Qinglong Group has established a standard module library, consolidating shapes with similar curvatures. In the Nanning Wuxiang China Resources MixC project, modular design reduced the originally required 206 sets of molds to 89, significantly lowering mold-making costs. We also consider the choice of mold materials: resin molds for small batches and steel molds for large batches, achieving optimal cost-effectiveness.

Coordinated design of manufacturing processes and parting. We optimize pouring gate positions through flow simulation analysis to avoid bubbles and uneven fiber distribution. Qinglong Group's parting principles, validated over 28 years of projects, are the guarantee for efficiently realizing complex shapes.