3D flat

3D sand-mold rapid printing is a binder-jetting (BJ)-based additive manufacturing technology tailored for the foundry industry. It enables direct digital production of sand molds and sand cores to realize mold-free rapid manufacturing. Using silica sand, ceramsite sand and other base materials together with binders such as furan resin, the process spreads sand layer-by-layer according to the 3D model and selectively jets binder for curing, ultimately forming high-precision sand molds and eliminating the conventional manufacturing workflow for wooden or metal patterns.

Core Advantages

• Extremely short lead time: Traditional pattern-making takes several weeks, while 3D-printed sand molds can be finished within 1-3 days, cutting R&D cycles by over 50%.
• Design freedom: It produces structures difficult for conventional processes, including complex inner cavities, thin-wall sections and conformal runners. Integrated printing is supported to reduce parting-line errors.
• High precision: Dimensional accuracy reaches ±0.1 mm, complying with Class-A casting standards. Excellent surface finish reduces subsequent machining allowances.
• Cost-effective & high efficiency: No patterns are required. Total production costs for single-piece or small-batch production drop by 30%-50%. Recyclable sand delivers eco-friendly operation.

Typical Applications
Widely adopted in automotive, aerospace, energy pump-valve, construction machinery and other sectors. It manufactures sand molds for engine blocks, turbine housings, complex pump bodies, large structural components and more, suited for prototype development, small-batch customization and mass production of intricate castings.

Technical Value
Driven by digitalization, this technology innovates the foundry sector by streamlining the full workflow of “design-printing-pouring”. It helps enterprises accelerate product iteration, shorten delivery lead-times and boost market competitiveness, representing a core technology integrating advanced manufacturing with traditional casting.