Method Of Manufacturing A Workpiece With Multiple Metal Layers

Abstract

A method of manufacturing a workpiece with multiple metal layers is disclosed as including steps (a) providing a mold with at least a runner and a cavity, (b) providing in the cavity of the mold a first metal layer made of a first metal, the first metal layer having a surface which is roughened and/or includes an engagement structure, and (c) injecting a molten second metal onto the surface of the first metal layer to form a second metal layer on the first metal layer in which the second metal layer engages with the roughened surface of the first metal layer or with the engagement structure of the surface of the first metal layer, and the molten second metal enters the cavity of the mold at a speed of at least 70 meters per second (m/s).

1 . A mold including a first mold piece and a second mold piece,
 wherein said first mold piece and said second mold piece are movable relative to each other between an open configuration in which said first mold piece and said second mold piece are detached from each other and a closed configuration for holding a semi-finished workpiece between said first mold piece and said second mold piece, and   wherein at least said first mold piece includes a wall member which, when said mold is in said closed configuration and holds a semi-finished workpiece, presses into at least part of said semi-finished workpiece to form a seal between said wall member and said semi-finished workpiece which prevents flow of a fluid through said seal.   
     
     
         2 . The mold according to  claim 1  wherein said first mold piece is an upper mold part. 
     
     
         3 . The mold according to  claim 1  wherein said wall member is endless. 
     
     
         4 . The mold according to  claim 1  further including a passage which, when said mold is in said closed configuration and a space is formed between said semi-finished workpiece and said first mold piece, allows supply of a molding material into said space. 
     
     
         5 . The mold according to  claim 1  further including a pressing component. 
     
     
         6 . The mold according to  claim 1  wherein said fluid is a gas and/or a liquid. 
     
     
         7 . The mold according to  claim 6  wherein said gas is air. 
     
     
         8 . The mold according to  claim 6  wherein said liquid is a molten molding material. 
     
     
         9 . A mold including a first mold piece and a second mold piece,
 wherein said first mold piece and said second mold piece are movable relative to each other between an open configuration in which said first mold piece and said second mold piece are detached from each other and a closed configuration in which said first mold piece and said mold piece are engaged with each other to form a cavity for containing a semi-finished workpiece,   wherein said first mold piece includes a passageway allowing supply of molding material into said cavity, and   wherein said mold is without a channel allowing flow of molding material out of said cavity.