Counting the Sources of Pores in Aluminum Alloy Die Casting Process

　　Aluminum alloy die-casting technology has never been a mature process, and there are always some defects in the production of aluminum alloy die-casting parts. The difference is only a matter of how many, and porosity is an unavoidable defect in aluminum alloy die-casting parts. Next, let's take a closer look at the sources of porosity in aluminum alloy die-casting engineering.

　　The main sources of porosity in aluminum alloy die-casting process are as follows: one is the gas trapped in the metal liquid during the filling process, which cannot escape from the die-casting mold cavity in time. These gases will form bubbles in the metal liquid and become porosity after cooling and forming; One type is the porosity caused by volume shrinkage during the formation of aluminum alloy die-casting parts; One is that the gas contained in the molten metal of aluminum alloy has not been completely removed; One reason is that the poor design of aluminum alloy die-casting molds leads to the inability to discharge gases from certain parts; One type is caused by excessive wall thickness in die-casting parts, and these pores are mostly located inside the die-casting parts.

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