Analysis of Mold Cost Proportion in Total Cost of Perforated UHPC Shapes and Discussion of Influencing Factors

In the field of architectural decoration, UHPC (Ultra-High Performance Concrete) has become the preferred material for high-end projects such as landmark buildings and commercial complexes, thanks to its outstanding mechanical properties and design expressiveness. Among its applications, openwork UHPC shapes, with their light and airy visual effect, are widely used in cultural venues, landscape features, and similar settings. However, the mold cost of such customized components often becomes a key factor in project cost control. As an industry-leading enterprise with 28 years of experience in detailed design and manufacturing of UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze, from a professional perspective, the proportion of openwork UHPC shape mold costs in the total project cost and the core influencing factors, providing designers and owners with a precise cost optimization reference.

I. Current Proportion of Openwork UHPC Shape Mold Costs and Industry Pain Points

The mold cost of openwork UHPC shapes typically accounts for 25%-40% of the total cost, significantly higher than that of ordinary UHPC components (15%-20%). This difference mainly stems from the higher requirements that openwork designs place on mold structural complexity, material precision, and processing technology. Taking an openwork curtain wall project at a cultural center as an example, its molds adopted a composite process of high-precision steel molds and 3D printing, with the cost of a single mold set accounting for 38%, directly affecting the overall economics of the project. The pain point currently facing the industry is: how to reduce the cost proportion through mold design optimization and process innovation while ensuring design fidelity. This is also the core focus of Qinglong, a UHPC manufacturer, during the detailed design stage.

II. Four Core Factors Affecting the Mold Cost of Openwork UHPC Shapes

#1. Shape Complexity and Precision Requirements

The geometric form of openwork patterns directly determines the mold structure. Straight-line openwork can use modular steel molds, with relatively controllable costs; whereas parametric double-curved openwork (e.g., minimum radius of curvature ≤300mm) requires customized high-precision molds, sometimes combined with CNC machining and 3D scanning technology, with cost increases reaching 2-3 times that of ordinary molds. Qinglong Group uses BIM technology and parametric design software (Rhino+Grasshopper) to achieve mold segmentation and standardized production of complex shapes, having once reduced the mold cost of an openwork relief for a museum by 18%.

#2. Mold Materials and Reuse Rate

Mold material selection requires balancing durability and economy: steel molds can be reused more than 50 times but require high initial investment; GRP (fibreglass reinforced plastic) molds are suitable for small-batch customization, with lower costs but shorter service life. For large projects, Qinglong recommends a composite solution of "steel mold body + GRP local inserts." In the Century Plaza renovation project on Nanjing East Road, this solution reduced the overall mold cost by 22%. In addition, versatile mold design (such as replaceable openwork modules) can significantly improve the reuse rate and further spread out costs.

#3. Production Scale and Process Innovation

Mass production can greatly reduce the unit mold cost. When the number of openwork components exceeds 100, the amortized mold cost can drop by 30%-40%. Qinglong's Guangxi production base has an annual capacity of 600,000 square meters, effectively improving mold utilization efficiency through large-scale production and automated casting processes. Meanwhile, the application of innovative processes such as "lost-foam casting" to specific openwork shapes can reduce mold assembly steps, lowering costs by about 15% compared with traditional processes.

#4. Design Development and Supply Chain Collaboration

Early design involvement is key to controlling mold costs. Qinglong's detailed design team optimizes openwork details from the perspective of production feasibility, for example by adjusting densely openworked areas into a gradient distribution to reduce weak points in the mold; through collaboration with design institutes and adopting a design strategy of "standardized modules + customized accents," the mold cost of openwork UHPC sunshades for a commercial complex was reduced by 25%. In addition, a localized supply chain (such as the Guangxi production base sourcing mold steel nearby) can shorten delivery cycles and indirectly reduce time costs.

III. Qinglong Group's Mold Cost Optimization Solutions

As a National High-Tech Enterprise and a drafting unit of UHPC industry standards, Qinglong Group provides customers with mold cost optimization in three aspects, relying on its full-chain service capabilities: first, integrated "design-production" services, achieving collaborative optimization of shapes and molds through early involvement; second, its own mold processing workshop, using advanced equipment such as laser cutting and 3D printing to improve mold precision and production efficiency; third, establishing a shared mold database that standardizes molds for classic openwork shapes for reuse in subsequent projects. For example, in the Dongguan Women and Children's Activity Center project, Qinglong controlled the mold cost proportion of openwork GRC/UHPC composite components at 28% through the above solutions, 12 percentage points lower than the industry average.

Mold cost control for openwork UHPC shapes is a comprehensive reflection of technology and management, requiring a balance among design artistry, engineering technology, and economy. Supported by 28 years of industry experience, Qinglong Group helps customers achieve a win-win of "aesthetic design and cost optimization" through technological innovation and full-process collaboration. For more industry information: Add WeChat qlfsbl123