Analysis of Mold Cost Proportion in Total Cost of Hollow-Out UHPC Shapes and Discussion of Influencing Factors

Molds are the “genetic code” of UHPC artistic shapes, and their cost control directly determines the balance between a project's economy and artistry. As an industry leader with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group will analyze the cost logic of hollowed-out UHPC shape molds for designers and owners from three aspects: cost composition, key influencing factors, and optimization paths.

In the field of contemporary architectural decoration, UHPC (Ultra-High Performance Concrete), with its ultra-high strength and exceptional plasticity, has become an ideal material for shaping architectural artistic forms, demonstrating unique advantages especially in complex shapes such as hollowed-out and irregular forms. However, the realization of such customized shapes highly depends on precision molds, whose costs often become a key variable in project cost control. As a national high-tech enterprise, Qinglong Group leverages its full-chain service experience to thoroughly analyze the cost proportion of hollowed-out UHPC shape molds and their core influencing factors, providing professional reference for the industry.

I. Analysis of the Cost Proportion of Hollowed-Out UHPC Shape Molds

In the total cost structure of UHPC projects, mold costs typically account for 15%-35%, with the specific proportion affected by multiple factors such as shape complexity, production scale, and material selection. Taking a landmark project undertaken by Qinglong Group as an example, the mold cost of its double-curved hollowed-out UHPC curtain wall components accounted for 32%, while the mold cost of standardized hollowed-out decorative lines could be as low as 18%. This data shows that mold costs fluctuate within a wide range, and precisely controlling their composition is the core of achieving project economy.

II. Four Core Factors Affecting the Cost of Hollowed-Out UHPC Molds

1. Shape Complexity and Precision Requirements: The hollowing rate, texture depth, and curvature radius of hollowed-out patterns directly determine mold processing difficulty. For example, parametric hollowed-out textures with 0.5mm precision require five-axis machining centers, increasing mold costs by more than 40% compared to conventional molds; Qinglong Group, through its independently developed BIM parametric design system, can shorten the design cycle of complex shape molds by 30%, indirectly reducing costs.

2. Mold Material and Reuse Count: Steel molds, despite their high initial investment (about 3-5 times that of wooden molds), can be reused more than 50 times and are suitable for mass production; wooden molds are low in cost but have short lifespans (3-5 uses), and are mostly used for small-batch customization. The modular steel mold system equipped at Qinglong's Nanning production base has increased the average reuse count of a single mold to 80 times, significantly diluting unit costs.

3. Production Scale and Process Selection: When the quantity produced per run is less than 50 pieces, the allocated mold cost rises significantly. Through the hybrid production model of “standardized modules + customized details”, Qinglong achieved a 22% reduction in mold costs for hollowed-out UHPC components in a commercial complex project. In addition, although 3D printing mold technology has advantages in complex shapes, its current cost is still higher than traditional processes, making it suitable for small-batch projects with extremely high difficulty.

4. Supply Chain Coordination and Whole-Process Management: The disconnect between mold design and detailed design leads to increased rework rates and hidden costs. Relying on its full-chain service capability of “detailed design - manufacturing - construction and installation”, Qinglong controlled mold modification costs within 5% of total mold expenses in the Dongguan Women and Children's Activity Center project through seamless integration of design and mold processing, far below the industry average of 12%.

III. Practical Paths for Cost Optimization of Hollowed-Out UHPC Molds

In response to the above factors, Qinglong Group proposes a “three-dimensional optimization strategy”: on the design side, reduce unnecessary hollowed-out structures through topology optimization to lower mold complexity; on the production side, promote the combined application of steel molds and fiberglass (GRP) composite molds to balance cost and lifespan; on the management side, establish a mold sharing platform to achieve cross-project mold reuse. For example, in the Nanjing East Road Century Plaza translucent concrete project, through modular mold design and sharing, the project's mold costs were reduced by 18%, while the production cycle was shortened by 25 days.

As a participant in setting UHPC/GRC/GRG/GRP industry standards, Qinglong Group has always believed that mold cost control is not simply “cost reduction”, but “value enhancement” achieved through technological innovation and lean management. In the future, with the maturation of technologies such as 3D printing and AI parametric design, the cost structure of hollowed-out UHPC shape molds will be further optimized, providing more possibilities for the unity of architectural art and economic feasibility. Qinglong is willing to leverage its 28 years of professional experience to provide designers and owners with full-process solutions from concept to implementation, jointly promoting the innovative application of new architectural decoration materials.