Forging device for molten metal

Abstract

A forging device for molten metal includes first and second die bodies that are linked by first and second power arms to move back and forth in a cavity of a die base so as to open and close a workpiece shaping space defined between first and second die faces of the first and second die bodies. When the workpiece shaping space is opened, a molten metal is poured, and then the workpiece shaping space is closed to cast a semi-finished workpiece. After that, the first and second power arms axially press and forge the semi-finished workpiece in the workpiece shaping space into a high-strength workpiece. The high-strength workpiece is shaped by casting and forging in the same process.

What is claimed is: 
     
         1 . A forging device for molten metal, comprising a die base, the die base having a cavity therein, a first die body and a second die body being disposed in the cavity;
 one end of the first die body having a first die face, another end of the first die body being locked by a screw to a first power arm;   one end of the second die body having a second die face opposite to the first die face, another end of the second die body being locked by a screw to a second power arm;   a workpiece shaping space being defined between the first die face and the second die face;   wherein the workpiece shaping space is opened and closed through reciprocating movement of the first and second power arms, when the workpiece shaping space is opened, a molten metal is poured, and then the workpiece shaping space is closed to cast a semi-finished workpiece; after that, the first and second power arms axially press and forge the semi-finished workpiece in the workpiece shaping space into a high-strength workpiece.   
     
     
         2 . The forging device as claimed in  claim 1 , wherein the die base is provided with at least one cooling hole communicating with the outside. 
     
     
         3 . The forging device as claimed in  claim 1 , wherein a die-closing groove is disposed in the cavity of the die base, and the die-closing groove is configured to limit ultimate actuation positions of the first die body and the second die body. 
     
     
         4 . The forging device as claimed in  claim 1 , wherein an outer periphery of the workpiece shaping space is formed with an overflow groove. 
     
     
         5 . The forging device as claimed in  claim 1 , wherein each of the first and second power arms is a hydraulic push rod or a screw rod driven by a hydraulic cylinder.