| 摘要 |
PROBLEM TO BE SOLVED: To provide raw material powder using inexpensive alloy elements substituting for expensive alloy elements such as Ni and Mo as raw material for a sintered component obtained by compacting metal powder then sintering the compacted metal powder, and to provide a sintered component using the raw material powder. SOLUTION: Iron base powder is blended with Fe-Mn powder having a grain size of ≤45 μm and an Mn content of 60 to 90 mass% in the addition amount ratio in the range of 0.5 to 3 mass%, Cu powder and graphite powder in the addition amount ratio in the ranges of 1 to 3 mass% and of 0.3 to 1 mass%, respectively, a powder lubricant for die molding in the addition amount ratio in the range of 0.4 to 1.2 mass%, and Fe-Mn powder in the addition amount ratio in the range of 0.1 to 1 with respect to the Cu powder, so that the high-strength composition iron powder is produced. By compacting the raw material iron powder and sintering the compacted iron powder at a temperature higher than the melting point of Cu, a high-strength sintered component having a tensile strength of ≥580 MPa can be actualized without using expensive alloy elements such as Ni and Mo. COPYRIGHT: (C)2010,JPO&INPIT
|
