Manufacturing method of compact, manufacturing method of structure, and cutting processed material

Abstract

A manufacturing method of a compact including pressure molding a composition including a metallic powder and a binder to obtain a green compact in which a relative density of a constituent material of the metallic powder with respect to real density is greater than or equal to 70% and less than or equal to 90%; and processing the green compact to obtain a compact.

What is claimed is: 
     
         1 . A manufacturing method of a compact, comprising:
 pressure molding a composition including a metallic powder and a binder in order to obtain a green compact in which a relative density of a constituent material of the metallic powder with respect to real density is greater than or equal to 70% and less than or equal to 90%; and   processing the green compact in order to obtain a compact.   
     
     
         2 . The manufacturing method of a compact according to  claim 1 ,
 wherein an average particle diameter of the metallic powder is greater than or equal to 1 μm and less than or equal to 15 μm.   
     
     
         3 . The manufacturing method of a compact according to  claim 1 ,
 wherein the binder includes polyvinyl alcohol a saponification degree of which is greater than or equal to 90 mol % and less than or equal to 98 mol %.   
     
     
         4 . The manufacturing method of a compact according to  claim 1 ,
 wherein the processing includes   first processing in which the green compact is subjected to a first process, and thus a processing trace passing through the green compact is formed with a part of a circumference of a region to be the compact being left, and   second processing in which the green compact is subjected to a second process, and thus the region is separated from the green compact by eliminating the part, and the compact is obtained.   
     
     
         5 . The manufacturing method of a compact according to  claim 4 ,
 wherein the part is in the shape of a rod, and   a minimum cross-sectional area of the part is greater than or equal to 0.2 mm 2  and less than or equal to 75 mm 2 .   
     
     
         6 . A manufacturing method of a structure, comprising:
 baking the compact obtained by the manufacturing method of a compact according to  claim 1  in order to obtain a structure configured of a metal sintered body.   
     
     
         7 . A manufacturing method of a structure, comprising:
 baking the compact obtained by the manufacturing method of a compact according to  claim 2  in order to obtain a structure configured of a metal sintered body.   
     
     
         8 . A manufacturing method of a structure, comprising:
 baking the compact obtained by the manufacturing method of a compact according to  claim 3  in order to obtain a structure configured of a metal sintered body.   
     
     
         9 . A manufacturing method of a structure, comprising:
 baking the compact obtained by the manufacturing method of a compact according to  claim 4  in order to obtain a structure configured of a metal sintered body.   
     
     
         10 . A manufacturing method of a structure, comprising:
 baking the compact obtained by the manufacturing method of a compact according to  claim 5  in order to obtain a structure configured of a metal sintered body.   
     
     
         11 . A manufacturing method of a structure, comprising:
 performing a first process with respect to the green compact obtained by the manufacturing method of a compact according to  claim 1 , and thus forming a processing trace passing through the green compact with a part of a circumference of a region to be the compact being left, and obtaining the compact;   baking the compact to obtain a metal sintered body; and   eliminating a portion of the metal sintered body corresponding to the part in order to obtain a structure.   
     
     
         12 . A manufacturing method of a structure, comprising:
 performing a first process with respect to the green compact obtained by the manufacturing method of a compact according to  claim 2 , and thus forming a processing trace passing through the green compact with apart of a circumference of a region to be the compact being left, and obtaining the compact;   baking the compact to obtain a metal sintered body; and   eliminating a portion of the metal sintered body corresponding to the part in order to obtain a structure.   
     
     
         13 . A manufacturing method of a structure, comprising:
 performing a first process with respect to the green compact obtained by the manufacturing method of a compact according to  claim 3 , and thus forming a processing trace passing through the green compact with apart of a circumference of a region to be the compact being left, and obtaining the compact;   baking the compact to obtain a metal sintered body; and   eliminating a portion of the metal sintered body corresponding to the part in order to obtain a structure.   
     
     
         14 . A cutting processed material, comprising:
 a metallic powder and a binder,   wherein a relative density of a constituent material of the metallic powder with respect to real density is greater than or equal to 70% and less than or equal to 90%, and the cutting processed material is used in a cutting process.