Method for producing composite metal product

Abstract

A carbon nano material is mixed with a metal material in a powder state. A resultant mixed material is compressed by a hot press and molded to granules. The metal in the granules are melted, blended and thus obtained composite material is injected into and fill a mold to form a composite metal product comprising the carbon nano material and the metal material. With the above process, it is possible to injection mold said granules to obtain the composite metal product to which the characteristics of the carbon nano material are applied.

What is claimed is:  
     
         1 . A method for producing a composite metal product containing a carbon nano material and a metal material, comprising the steps of: 
 mixing the carbon nano material with the metal material in a powder state;    compressing a resultant mixed material to a solid material by a hot press and forming said solid mixed material to granules such as chips, pellets, and the like;    melting the metal and keading the granules to form a composite material and injecting the composite material into a mold to form the composite metal product; and    obtaining the composite metal product.    
     
     
         2 . The method according to  claim 1 , wherein the melting and kneading step and the injecting step are performed by using an inline screw type injection machine or a screw type preplasticization injection machine.  
     
     
         3 . The method according to  claim 1  or  2 , wherein the metal material comprises a low melting point metal material.  
     
     
         4 . A composite metal product containing a carbon nano material and a metal material, wherein said composit metal product is obtained by any of the methods according to  claims 1  to  3 .