ダイカストの引張強度に及ぼす鋳巣低減圧縮処理の影響

概要

論文の詳細を見る
In the die casting process, it is difficult to prevent porosity in products. Porosity has undesirable influence on mechanical properties such as strength of components and resistance to air leakage of pressure vessels. Recently, the PRPC (Porosity Reducing Post Compression) method is adopted as a secondary process to deal with porosity. The PRPC process has the potential for improving productivity because it allows the impregnation process to be eliminated or reduced. In this study, the improvement of tensile strength by applying the PRPC process was investigated. The porosity inside die cast specimens was observed nondestructively by X-ray computed tomography (CT) to examine the reduction efficiency of porosity by applying the PRPC process. It was shown that PRPC with permanent strain of about 10% at the temperature of 300 degrees reduces porosity by approximately half. In addition, the tensile strength could be improved by optimizing the compression direction.
Japan Foundry Engineering Societyの論文