In heavy industry and major equipment manufacturing, large-scale cast components form the structural backbone of critical machinery and infrastructure. Our higher quality resin sand casting process specializes in producing big castings that combine massive dimensions with precision engineering. This advanced manufacturing approach delivers components weighing from 500 kg to 20,000 kg with exceptional dimensional stability, superior surface quality, and reliable mechanical properties for the most demanding industrial applications.
Material Excellence and Performance Characteristics
We utilize premium grades of ductile iron (GGG40/GGG50/GGG60), gray iron (G3000/G3500), and cast steel (WCB/WCC) specifically engineered for large-section castings. Our ductile iron big castings achieve tensile strength of 400-600 MPa with elongation of 10-18%, while maintaining consistent properties throughout heavy cross-sections. Cast steel components provide yield strength of 250-275 MPa with excellent impact toughness at both elevated and sub-zero temperatures. The resin sand casting process ensures homogeneous grain structure with controlled carbide formation, significantly reducing the risk of shrinkage defects and porosity in massive casting sections. These materials demonstrate exceptional resistance to thermal fatigue and maintain structural integrity under sustained heavy loading conditions.
Advanced Manufacturing Process
Our resin sand casting technology employs phenolic urethane-bonded systems with high-strength sand mixtures that maintain mold integrity for extended pouring times. The process incorporates computer-aided solidification simulation to optimize riser placement and feeding systems, ensuring sound metallurgical structure throughout massive casting volumes. We utilize specialized ladle systems with capacity up to 20,000 kg for controlled pouring, complemented by real-time thermal monitoring to track solidification patterns. Each large casting undergoes stress relief annealing to minimize residual stresses, followed by precision machining on large-scale CNC boring mills, planers, and machining centers capable of handling components up to 8 meters in dimension.
Comprehensive Industrial Applications
Our big castings serve as foundational components across multiple heavy industries including mining equipment (crusher frames, mill housings), energy generation (turbine bases, generator frames), marine propulsion (engine blocks, stern frames), and heavy machinery (press frames, machine tool bases). The construction equipment sector utilizes our large castings for excavator bases, crane rotating frames, and bulldozer main frames. Additional applications include large valve bodies for water infrastructure, rolling mill housings for metal production, and specialized components for industrial processing equipment where structural integrity and long-term reliability are paramount.
Partner with our foundry for higher quality resin sand cast big castings that combine manufacturing expertise with engineering excellence. Our comprehensive approach from design consultation to finished machining ensures solutions that maximize equipment performance, reduce lifecycle costs, and provide reliable service in the most demanding industrial environments, supported by rigorous quality control and non-destructive testing protocols.
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