Title:
高強度焼結部品用合金鋼粉および混合粉
Document Type and Number:
Japanese Patent JP4069506
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide alloy steel powder and a powdery mixture capable of producing high strength sintered parts. SOLUTION: This invention in water atomized steel powder in which alloy elements have been subjected to prealloying. As the prealloying elements, by weight, 1.0 to 10.0% Cu is contained, or moreover, <=10% Mo and/or <=0.08% Nb are contained, and the balance is Fe with inevitable impurities. Or, as the prealloying elements, furthermore, 1 to 10%, preferably >2.5 to 10% Mo and 0.005 to 0.08% Nb are contained, and the balance is Fe with inevitable impurities. Or, it may be a powdery mixture mixed with one or two kinds selected from <=10% Cu powder and <=10% Ni powder as well. Cu powder is preferably added so as to be partially alloyed to the alloy steel powder. Fe-C based water atomized powder contg. 2 to 5% C is added to and mixed with the above alloy steel powder or powdery mixture to form into a powdery mixture, and this is appropriate for the increase of its strength.
Inventors:
Shigeru Unami
Kuniaki Ogura
Kuniaki Ogura
Application Number:
JP21689998A
Publication Date:
April 02, 2008
Filing Date:
July 31, 1998
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B22F9/08; C22C38/00; B22F1/00; C22C38/08; C22C38/12; C22C38/16
Domestic Patent References:
| JP5009501A | ||||
| JP50026705A | ||||
| JP64025901A | ||||
| JP61174354A | ||||
| JP9059740A | ||||
| JP61183444A | ||||
| JP6081001A | ||||
| JP8035041A | ||||
| JP52081004A | ||||
| JP63020432A | ||||
| JP62120401A |
Attorney, Agent or Firm:
Eiichi Kobayashi