Fe-based sintered alloy

Abstract

There is here disclosed an Fe-based sintered alloy produced through a mixing step of mixing an Fe—Mn alloy powder, graphite powder and Fe powder by a mixer (S 16 ), a compacting step of compacting the mixed powder at a predetermined pressure (S 18 ), and a sintering step of sintering the resultant compact in a sintering oven at a predetermined temperature for a predetermined time (S 20 ), the Fe—Mn alloy powder being characterized by containing 2-30 mass % of Mn. In particular, the mixing step (S 16 ) is carried out by mixing 5-50 mass % of the Fe—Mn alloy powder, 0.2-2 mass % of the graphite powder, and the remainder of the Fe powder in the mixer. Consequently, mechanical strength of the Fe-based sintered alloy can be further improved.

1 . An Fe-based sintered alloy produced through
 a mixing step of mixing an Fe—Mn alloy powder, graphite powder and Fe powder,   a compacting step of compacting the mixed powder, and   a sintering step of sintering the resultant compact,   the Fe—Mn alloy powder being characterized by containing 2-30 mass % of Mn.   
     
     
         2 . The Fe-based sintered alloy according to  claim 1 , wherein the mixing step is characterized by mixing 5-50 mass % of the Fe—Mn alloy powder, 0.2-2 mass % of the graphite powder, and the remainder of the Fe powder.