Pores: During the casting process, gas may be entrained in the metal to form pores and voids, affecting the sealing and mechanical properties of the casting.
Inclusion: Non metallic impurities may be present in the casting, reducing its strength and toughness.
Shrinkage defect: Metal will shrink during the solidification process, and if not controlled, it may lead to shrinkage defects in castings, such as shrinkage holes and hot cracks.
Misalignment: Incorrect mold installation or improper mold design may lead to casting misalignment and misalignment, affecting the accuracy and assembly of the casting.
Hot cracking: Due to uneven cooling rate or changes in metal structure, castings may experience hot cracking, which affects their mechanical properties and service life.
Overfilling or underfilling: During the pouring process, if the amount of filler metal is too much or too little, it may lead to overfilling or underfilling of the casting, affecting the size and shape of the casting.
Surface defects: Surface defects that may occur during the pouring process include bubbles, sand holes, slag inclusions, etc., which affect the appearance quality and processing performance of the casting.
Size deviation: Due to metal shrinkage and improper control of process parameters, the actual size of castings may have some deviation from design requirements.
Poor metal flow: Improper design of the pouring system or blockage during the pouring process may lead to poor metal flow, affecting the molding integrity and internal quality of the casting.
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