Xinda Launches Special Resin for Binder Jet 3D Printing to Enable Green & Efficient Production of High-End Precision Castings
2026-07-29 09:14Driven by rapid AI development and continuous industrial transformation in China, sand binder jet 3D printing technology is widely adopted in the foundry sector. It enables manufacturers to produce complex castings and shorten lead times, with steadily growing market demand.
Targeting high-end casting sectors including aerospace, precision hydraulics, mining machinery and precision ceramics, Xinda Foundry has developed a new high-strength & high-activity dedicated resin for binder jet 3D printing. Breaking the performance limitations of traditional resin systems, it achieves sand mould properties comparable to shell coated sand technology and solves multiple key industry challenges, supporting intelligent upgrading of traditional foundries.
Ⅰ.Solve Four Key Industry Pain Points
Conventional 3D printing resin brings many obstacles to mass production:
Poor sand flowability leads to feeding blockage of printing equipment;
Low initial strength of printed sand moulds & cores, easy breakage during handling;
Difficult shakeout after casting, increasing labor cost for post-processing;
Sand falling during pouring causes surface pit defects and casting rejection.
Xinda's new 3D printing resin optimizes formulation to overcome the above challenges.
Ⅱ. Standard Printing Test & Published Performance Data
Test Conditions
Ambient temperature: 20–25℃
Ambient humidity: 30–50%
Sand grain size: 100–140 mesh
Print resolution: 720×360
Resin addition: 2.3% (based on sand weight)
Hardener addition: 0.40% (based on sand weight)
Test Results
| Sample | 1h Tensile Strength(MPa) | 2h Tensile Strength(MPa) | 24h Tensile Strength(MPa) | Gas evolution(g/ml) |
|---|---|---|---|---|
| Sample 1 | 2.082 | 2.552 | 3.225 | 11.5 |
| Sample 2 | 2.605 | 3.467 | 4.643 | 11.4 |
Test conclusion: The resin realizes fast curing, remarkable improvement of tensile strength and stable gas evolution, balancing mechanical performance and casting safety.
Ⅲ. Core Product Advantages
Compared with general 3D printing binder resin, Xinda shell-type 3D printing resin has prominent strengths:
High strength & stable production
High mechanical strength after curing; sand moulds resist breakage during transportation. No sand drop during pouring, easy shakeout.
Low odor & low free formaldehyde
Free formaldehyde content ＜0.2%, low VOC emission. Improve workshop working environment and comply with green foundry requirements.
Minimize blowhole defects & raise yield
Lower resin dosage, matched optimized hardener reduces blowhole defects and improves casting yield.
Low corrosivity, protect printing equipment
Good compatibility with mainstream binder jet printers, reduce printhead corrosion and equipment maintenance cost.
Wide application scope
Suitable for high-precision hydraulic castings, aerospace components, mining machinery parts and high-end ceramic casting.
The foundry industry is advancing toward precision, intelligence and environmental protection, and sand 3D printing is a critical technical route. Xinda keeps focusing on foundry material R&D. With advanced material solutions, we maximize the advantages of 3D printing technology, help foundries streamline production and manufacture complex castings, and facilitate high-quality development of the whole foundry industry.