Pay attention to details when designing the structure of the casting

Update:12 Jan 2019
Summary:

Since the casting is cooled and solidified in the metal […]

Since the casting is cooled and solidified in the metal mold faster than the sand mold, the metal mold has no tolerance. Therefore, in the metal casting, the casting stress generated in the casting is larger than that of the sand casting, and the tendency is also large. Defects such as insufficient pouring, cold separation, and white mouth (for castings). usually:

The following structural problems should be noted in preventing cracks in metal castings:

A. The requirements for uniform wall thickness, transition between walls and connections should be moderated, and appropriate rounded corners should be more stringent than sand castings;

B. should be connected to the vertically connected wall;

C. For structurally weak parts, ribs, bosses, etc. shall be reinforced to prevent casting cracks;

D. should minimize the protrusions, ribs, flanges and other protruding parts that hinder the free shrinkage of the casting;

E. When reinforced ribs are placed on the casting, its influence on the shrinkage of the casting should also be considered.