Iron-based powder mixture, and method of manufacturing iron-based compacted body and iron-based sintered body

Abstract

An iron-based powder mixture for powder metallurgy is provided, in which iron-based powder is blended with at least one selected from talc and steatite, and preferably further blended with metallic soap, thereby when a compacted body is sintered, furnace environment is not adversely affected, and excellent compaction performance is achieved even in a low temperature range of less than 100° C., and more preferably, an obtained sintered body has excellent machining performance.

1 .- 9 . (canceled) 
   
   
       10 . An iron-based powder mixture containing:
 an iron-based powder,   and containing as additives,   at least one selected from talc and steatite, and   fatty acid amide.   
   
   
       11 . The iron-based powder mixture according to  claim 10 :
 wherein the additives further contain metallic soap.   
   
   
       12 . The iron-based powder mixture according to  claim 10 .:
 wherein the iron-based powder mixture is further blended with alloying powder.   
   
   
       13 . The iron-based powder mixture according to  claim 11 :
 wherein the iron-based powder mixture is further blended with alloying powder.   
   
   
       14 . The iron-based powder mixture according to  claim 12 :
 wherein the iron-based powder is water-atomized alloyed steel powder containing Mo of 0.3 to 0.5 mass %, Mn of 0.1 to 0.25 mass %, and the remainder being Fe and inevitable impurities, and   wherein the alloying powder is Cu powder of 1 to 3 mass % and graphite powder of 0.5 to 1.0 mass %.   
   
   
       15 . The iron-based powder mixture according to  claim 13 :
 wherein the iron-based powder is water-atomized alloyed steel powder containing Mo of 0.3 to 0.5 mass %, Mn of 0.1 to 0.25 mass %, and the remainder being Fe and inevitable impurities, and   wherein the alloying powder is Cu powder of 1 to 3 mass % and graphite powder of 0.5 to 1.0 mass %.   
   
   
       16 . An iron-based powder mixture:
 water-atomized alloyed steel powder containing Mo of 0.3 to 0.5 mass %, Mn of 0.1 to 0.25 mass %, and the remainder being Fe and inevitable impurities mixed with,   Cu powder of 1 to 3 mass %,   graphite powder of 0.5 to 1.0 mass %,   at least one selected from talc and steatite in a range of 0.05 to 0.5 mass % in total, and   fatty acid amide.   
   
   
       17 . The iron-based powder mixture according to  claim 16 :
 wherein the iron-based powder mixture further contains metallic soap.   
   
   
       18 . A method of manufacturing an iron-based compacted body comprising:
 filling the iron-based powder mixture according to  claim 10  in a die, and   compacting the mixture at a temperature of less than 100° C.   
   
   
       19 . A method of manufacturing an iron-based compacted body comprising:
 filling the iron-based powder mixture according to  claim 11  in a die, and   compacting the mixture at a temperature of less than 100° C.   
   
   
       20 . A method of manufacturing an iron-based compacted body comprising:
 filling the iron-based powder mixture according to  claim 12  in a die, and   compacting the mixture at a temperature of less than 100° C.   
   
   
       21 . A method of manufacturing an iron-based compacted body comprising:
 filling the iron-based powder mixture according to  claim 13  in a die, and   compacting the mixture at a temperature of less than 100° C.   
   
   
       22 . A method of manufacturing an iron-based sintered body comprising:
 filling the iron-based powder mixture according to  claim 10  in a die,   compacting the mixture at a temperature of less than 100° C., and   sintering an obtained iron-based compacted body.   
   
   
       23 . A method of manufacturing an iron-based sintered body comprising:
 filling the iron-based powder mixture according to  claim 11  in a die,   compacting the mixture at a temperature of less than 100° C., and   sintering an obtained iron-based compacted body.   
   
   
       24 . A method of manufacturing an iron-based sintered body comprising:
 filling the iron-based powder mixture according to  claim 12  in a die,   compacting the mixture at a temperature of less than 100° C., and   sintering an obtained iron-based compacted body.   
   
   
       25 . A method of manufacturing an iron-based sintered body comprising:
 filling the iron-based powder mixture according to  claim 13  in a die,   compacting the mixture at a temperature of less than 100° C., and   sintering an obtained iron-based compacted body.