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hank@alumcasting.com
Why Do Aluminum Die Castings Have Porosity Problems?
Why Do Aluminum Die Castings Have Porosity Problems? Understanding Causes, Prevention Methods, and Quality Control Solutions Porosity is one of the most common quality challenges in aluminum die casting manufacturing. Small internal voids or cavities inside aluminum castings can affect mechanical strength, pressure tightness, machining performance, and long-term reliability. For industries such as automotive, electric vehicles, industrial equipment, and precision engineering, controlling porosity is critical for producing reliable aluminum components. This article explains the main causes of porosity in aluminum die casting and the engineering methods used to reduce casting defects. What Is Porosity in Aluminum Die Casting? Porosity refers to small holes or voids formed inside aluminum castings during the filling and solidification process. These defects are usually caused by: Trapped gas Material shrinkage Improper filling conditions Poor mold venting Inc...
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