METAL POURING METHOD FOR THE DIE CASTING PROCESS

摘要

A method for delivering molten metal from a ladle to a die casting shot sleeve and a ladle and shot sleeve assembly. Both the ladle and a rotatable device coupled to the shot sleeve are made to rotate about respective axes as a way to reduce air entrainment and oxide film inclusions during the gravity filling of the shot sleeve with molten metal from the ladle. In a preferred form, the axis of rotation of the nozzle in the ladle is orthogonal to the axis of rotation of the shot sleeve rotatable device that is preferably placed in a horizontal filling direction. The nozzle is configured to deliver the molten metal through the lowest level of the shot sleeve when the ladle is rotated from a first position to a second position about its axis, followed by its rotation about a filling axis of the shot sleeve from a first angular position to a second angular position. At the second angular position, a die casting plunger can fill the casting cavity with the molten metal that has been delivered to the shot sleeve.

主权项

1. A method of transferring molten metal to a die casting mold, the method comprising:
providing a ladle with a dispensing nozzle formed therein, said nozzle defining a first axis of rotation about a molten metal flow direction formed therethrough; providing a receptacle fluidly between said ladle and said mold, said receptacle oriented relative to said ladle such that it defines a second axis of rotation; fluidly coupling said ladle to said receptacle though said nozzle; delivering said molten metal from said ladle to said receptacle by rotating said ladle about said first axis of rotation during an initial filling operation of said receptacle, then rotating said ladle about said second axis of rotation to permit subsequent filling of said receptacle; and conveying said molten metal that has been delivered to said receptacle into a mold cavity that is placed in fluid communication therewith.