IRON-BASE POWDER MIXTURE FOR WARM COMPACTION, IRON-BASE POWDER MIXTURE FOR WARM DIE LUBRICATION COMPACTION, AND METHOD FOR MANUFACTURING IRON-BASE SINTERED COMPACT USING THEM

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an iron-base sintered compact by which an iron-base sintered compact having high density and high fatigue strength can be obtained by sintering a high-density green compact. SOLUTION: A preheated die is used as the die, and the iron-base powder mixture contains iron-base powder having <=75μm maximum particle size of primary particles, graphite powder in an amount of 0.1 to 1.0 mass% based on the total amount of the iron-base powder mixture, and a lubricant for powder compaction in an amount of 0.05 to 0.80 mass%.