| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
Avoiding the Cold Shut Defect by Introducing the Shape Factor Modifying Chvorinov’s Rule in Aluminum Gravity Die Casting |
| Author(s) |
Fu-Yuan Hsu, Chi-Ming Hung, Zhang-Yuan Luo |
| On-Site Speaker (Planned) |
Fu-Yuan Hsu |
| Abstract Scope |
To avoid the so-called cold shut or misrun defects, the relationships among the proposed factors such as shape factor, mold constant, and critical flow rate were built up to construct the designing rules for the bottom ingate. An aluminum knuckle casting was cast in various initial mold temperatures to obtain the critical filling flow rate controlled by the cross-sectional area of the bottom ingates with a constant velocity. Using the Computational Fluid Dynamic package, the various magnifying sizes with the same shape as the knuckle castings were modeled, and the maximum critical filling time could be found. Based on the proposed shape factor modifying Chvorinov’s rule, the so-called critical mold constant (Bcold) and the shape factor (Spcold) were introduced in this study. From the proposed relationship, the rule of designing the critical bottom ingate size with the minimizing flow rate could be achieved to avoid cold shut defects. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Process Technology, Aluminum |