Title:
焼入れ組織を呈する鉄系焼結合金の製造方法
Document Type and Number:
Japanese Patent JP4054649
Kind Code:
B2
Abstract:
To provide a method of obtaining an iron base sintered alloy which possesses a strength equivalent to the conventional quenched material without quenching, in a manufacturing method of the iron base sintered alloy by a powder-metallurgy process.
An Fe-Ni-Mo alloy powder which has a specific mass ratio, and an Fe-Mo alloy powder which has a specific mass ratio are blended by a specific ratio, further mixed powder in which a specific amount of an Ni powder and a graphite powder are added is pressed and compacted in a die, a green compact is sintered in a non-oxidizing atmosphere and in a specific temperature range, then it is cooled at a specific cooling rate in a sintering furnace.
COPYRIGHT: (C)2004,JPO
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Inventors:
Yuiyuki Tsutsui
Kei Ishii
Atsushi Suzuki
Gou Sato
Junichi Uemura
Kei Ishii
Atsushi Suzuki
Gou Sato
Junichi Uemura
Application Number:
JP2002288441A
Publication Date:
February 27, 2008
Filing Date:
October 01, 2002
Export Citation:
Assignee:
Hitachi Powdered Metals Co., Ltd.
Hitachi Koki Co., Ltd.
Hitachi Koki Co., Ltd.
International Classes:
B22F3/10; B22F1/00; C22C38/00; C22C38/12
Domestic Patent References:
| JP63020432A | ||||
| JP5078712A | ||||
| JP9087794A | ||||
| JP9157805A |
Attorney, Agent or Firm:
Hajime Maejima