Patent ID: 7614440
Filing Date: 2009-11-10
Classification: B22D

Abstract:
1. A diecast method, comprising the steps of: providing a plunger having a graphite plunger tip disposed at an upper end thereof, the plunger moving upward in a vertical direction inside a graphite sleeve extending in a vertical direction, the graphite sleeve having a flange extending in a horizontal direction at an upper end thereof; providing a mold disposed above the graphite sleeve, the mold being separated into an upper mold and a lower mold in the vertical direction, and the upper mold and the lower mold forming a die cavity extending in a horizontal direction, wherein the flange of the graphite sleeve is connected to the lower mold in the horizontal direction; melting an amorphous metal material by heating the amorphous metal material disposed on the graphite plunger tip within the graphite sleeve; maintaining a mold temperature in a range of approximately 150° C. to 250° C.; injecting the melted amorphous metal material inside the die cavity by pushing the plunger holding the melted amorphous metal material upward in the vertical direction at a speed of 0.1 m/sec to 2 m/sec and while applying a pressure of 5 MPa to 50 MPa on the melted amorphous metal material; and solidifying the melted amorphous metal material inside the die cavity by cooling.