What Are the Common Mold Materials for UHPC Components and Their Advantages? An In-Depth Analysis of Qinglong's UHPC Mold Technology System

The choice of mold material for UHPC components directly affects product precision and surface quality. Common molds fall into four categories: steel molds, GRP molds, silicone molds, and composite material molds, each suited to specific applications. Based on 28 years of experience, Qinglong UHPC has concluded: steel molds have the longest lifespan (over 1000 uses) and are suitable for mass production of standard components; GRP molds offer high cost-effectiveness (lifespan of 200-300 uses) and are suitable for complex shapes; silicone molds have the highest replication precision (±0.1mm) and are suitable for relief textures; composite material molds offer excellent overall performance and are suitable for special requirements.

In the Shenzhen Art Center project, double-curved curtain wall panels used CNC-machined steel molds (with hard chrome plating on the surface). After the molds were reused 800 times, panel thickness deviation remained within ±0.3mm, with surface finish Ra≤1.6μm. Decorative relief components used silicone molds, which perfectly replicated the stone texture, achieving texture clarity of over 95%. This differentiated mold material selection approach ensured quality while controlling costs.

Technical Advantages of Steel Molds

Service life of over 1000 uses; high dimensional stability (thermal deformation ≤0.1mm/m); surface hardness HRC50-55; suitable for batch production of standard components. However, initial investment is high and production cycles are long.

Characteristics of GRP Molds

Short production cycle (7-10 days); cost is 30% of steel molds; capable of producing complex curved surfaces; but lifespan is 200-300 uses, and the surface requires regular maintenance.

Application Scenarios for Silicone Molds

Replication precision ±0.1mm; perfectly renders fine textures; excellent demolding performance; but low strength, lifespan of 50-80 uses, suitable for artistic components.

Innovative Applications of Composite Material Molds

Epoxy resin + fiberglass reinforcement; lifespan of 500-800 uses; precision ±0.2mm; well-balanced overall performance, suitable for medium-sized complex components.

Mold selection should be aligned with project requirements. Qinglong UHPC provides professional mold recommendations to ensure the best results.