What is the cause of the center crack in the casting of aluminum bars?
Caused by excessive temperature or excessive shrinkage.
4. pouring temperature is too high5. casting out the casting prematurely6. heat treatment, overheating or over burning, excessive cooling rate
Causes:1., the casting structure design is unreasonable, there are sharp corners, wall thickness change is too wide2., sand (core) concessions bad3. local overheating of mold
