Methods to reduce casting defects of 3D welding platform

Methods to reduce casting defects of 3D welding platform：

1.The 3D welded platform castings should have good formability,and the small wall thickness of the castings should be controlled not to be lower than the allowable value;

2.The cast hole on the plane wall of the welding platform casting should be reinforced with convex edge to reduce the wall thickness;

3.There should be several connecting columns in the large-area sandwich cavity such as water channel and gas channel in the casting;

4,the casting structure should be as far as possible so that it can shrink without hindrance when cooling;

5.The local thick section of the platform casting should be hollowed out or cast hole structure as far as possible,and reinforced appropriately with additional ribs;

6.The platform should try to avoid a large horizontal plane in the casting;

7.The wall thickness of the casting should be uniform to prevent shrinkage cavity and hot cracking.When the sequential solidification conditions need to be determined,the wall thickness should change in one direction as far as possible,and when the simultaneous solidification conditions need to be determined,the wall thickness should be equal to the cross section as much as possible.

8.The connection between casting walls should be protected against sharp corners and metal agglomeration,and the transition between thick wall and thin wall should be gradual to prevent sudden changes,so as not to cause hot spots and stress concentration,resulting in hot cracking and shrinkage porosity.

GB/T 7714:Shuvo M M, King P, Voigt R, et al. Toward reducing castingGB/T 7714defects via 3D risers via 3D sand-printing: a simulationstudy[J]. International Journal of Metalcasting, 2025, 19(2):876-889

MLA:Shuvo, Md Moinuddin, et al. "Toward reducing casting defectsvia 3D risers via 3D sand-printing: a simulation study."International Journal of Metalcasting 19.2 (2025): 876-889.

APA:Shuvo, M. M., King, P., Voigt, R., & Manogharan, G. (2025)Toward reducing casting defects via 3D risers via 3D sand-printing: a simulation study. International Journal ofMetalcasting, 19(2), 876-889.