مطالعه امکان­پذیری فرآیند ریخته­ گری تحت­ فشار در خلأ

A feasibility study of the partial squeeze and vacuum die casting process

مطالعه امکان­پذیری فرآیند ریخته­ گری تحت­ فشار در خلأ و انقباض جزئی

ABSTRACT

A feasibility study of the partial squeeze and vacuum die casting process was performed to make defect-free casting products with excellent mechanical properties. The trial die casting process in this study was industrially implemented for producing a reaction shaft support made of a hyper eutectic Al±15%Si alloy. To combine the squeezing and vacuum effect, the plunger injection system was designed and attached to a chill vent type vacuum machinery system. The combination of the vacuum effect before injection and the squeezing effect after injection resulted in excellent defect-free die casting products. The uniform distribution of ®ne acicular eutectic and proeutectic silicon obtained from the trial process also provided excellent mechanical properties.