Title:
METHOD FOR REFORMING FERROUS SINTERED MATERIAL
Document Type and Number:
Japanese Patent JPH09157706
Kind Code:
A
Abstract:
To provide a method for reforming a ferrous sintered material by which a sintered material excellent in mechanical properties together with processability is produced at a low cost.
An aq. soln. or alcohol soln. contg. boron (surface reforming agent) is used, the surface reforming agent is infiltrated in a surface reforming stage 2 into a part or the whole of the surface of the formed body, calcined body or sintered body formed in a forming stage 1 and contg. carbon, the body is sintered in an ordinary nonoxidizing gas atmosphere in a sintering stage 3, and a sintered material having a metallic structure with the combined carbon content decreased in the infiltrated part is obtained.
Inventors:
KO HA
TSUTSUI TADAYUKI
ISHII HIROSHI
YOMO HIDEO
SAKAI JUN
TSUTSUI TADAYUKI
ISHII HIROSHI
YOMO HIDEO
SAKAI JUN
Application Number:
JP32069895A
Publication Date:
June 17, 1997
Filing Date:
December 08, 1995
Export Citation:
Assignee:
HITACHI POWDERED METALS
International Classes:
B22F3/24; B22F3/10; B22F3/26; C22C1/04; (IPC1-7): B22F3/24; B22F3/26; C22C1/04
Attorney, Agent or Firm:
Shigenori Wada
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