Mixed powder for powder metallurgy

Abstract

Provided is a mixed powder for powder metallurgy that has a low dust generating property and that forms therefrom a compact with high density and enables easy removal of the compact from a forming die. The mixed powder for powder metallurgy in the present invention is characterized by containing an iron-based powder, an auxiliary raw material, and a lubricant, the lubricant being a liquid lubricant that contains an organic metal component.

1 . A mixed powder for powder metallurgy, comprising: an iron-based powder; an auxiliary raw material; and a lubricant, the lubricant being a liquid lubricant that contains an organic metal component. 
     
     
         2 . The mixed powder for powder metallurgy according to  claim 1 , wherein the lubricant contains at least one selected from the group consisting of metal salicylates, metal sulfonates, metal phenates, metal thiocarbamates, and metal thiophosphonates. 
     
     
         3 . The mixed powder for powder metallurgy according to  claim 1 , wherein the lubricant contains, as the organic metal component, at least one selected from the group consisting of alkali metals, alkaline earth metals, molybdenum, and zinc. 
     
     
         4 . The mixed powder for powder metallurgy according to  claim 1 , wherein the lubricant is contained in a proportion of 0.01 parts by mass or more and 1 part by mass or less relative to 100 parts by mass of the iron-based powder. 
     
     
         5 . The mixed powder for powder metallurgy according to  claim 2 , wherein the lubricant contains, as the organic metal component, at least one of alkali metals, alkaline earth metals, molybdenum, and zinc. 
     
     
         6 . The mixed powder for powder metallurgy according to  claim 2 , wherein the lubricant is contained in a proportion of 0.01 parts by mass or more and 1 part by mass or less relative to 100 parts by mass of the iron-based powder. 
     
     
         7 . The mixed powder for powder metallurgy according to  claim 3 , wherein the lubricant is contained in a proportion of 0.01 parts by mass or more and 1 part by mass or less relative to 100 parts by mass of the iron-based powder. 
     
     
         8 . A mixed powder comprising: an iron-based powder; an auxiliary raw material; and a lubricant, the lubricant being a liquid lubricant that contains an organic metal component.