Sand casting method for complex closed cavity large aluminum alloy welded structure
By using functionalized hole system design, collaborative gating system, 3D printed sand core and metal additive manufacturing technology, the problems of sand core placement, filling quality and closed cavity repair of large aluminum alloy welded structural parts with complex closed cavities have been solved, realizing the precise molding and efficient production of high-quality castings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JILIN UNIVERSITY
- Filing Date
- 2026-04-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to effectively address issues related to sand core placement, filling quality, and cavity repair for large aluminum alloy welded structural components with complex closed cavities. This results in difficulties in casting formation, poor quality, and an inability to meet the requirements of high-end equipment.
By employing a functionalized hole system design, a collaborative gating system, 3D-printed sand cores, and metal additive manufacturing technology, differentiated functional holes are designed on the upper and lower surfaces of aluminum alloy structural parts to ensure stable sand core positioning. The gating system is arranged independently, high-strength sand cores are prepared using 3D printing technology, and metal additive manufacturing technology is used to seal the interconnected holes of the sand cores to achieve metallurgical bonding.
It achieves precise molding of complex closed cavities, significantly improves the filling quality of castings and the integrity of closed cavities, reduces defect rates and production costs, improves the mechanical properties and reliability of structural components, and is highly adaptable and easy to mass-produce.
Smart Images
Figure CN122400513A_ABST