Title:
METHOD FOR MANUFACTURING HIGH-STRENGTH SINTER-MOLDED COMPACT, AND DEVICE FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2012/077750
Kind Code:
A1
Abstract:
A method for manufacturing a high-strength sinter-molded compact by means of a pressure molding step and a sinter molding step, wherein the pressure molding step comprises a first pressure molding step and a second pressure molding step, with a heating/temperature-raising step therebetween. In the first pressure molding step, a first pressing force is applied to a mixed powder at room temperature, which is less than the melting point of a lubricant powder, in a first mold to form a primary green molded compact. In the heating/temperature-raising step, the primary green molded compact is heated to raise the temperature of the compact to a temperature equivalent to the melting point thereof. In the second pressure molding step, a second pressing force is applied to the primary green molded compact at the temperature equivalent to the melting point in a second mold that has been warmed to the temperature equivalent to the melting point in order to form a secondary green molded compact having an increased density.
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Inventors:
HIRAI YOSHIKI (JP)
Application Number:
PCT/JP2011/078414
Publication Date:
June 14, 2012
Filing Date:
December 08, 2011
Export Citation:
Assignee:
AIDA ENG LTD (JP)
HIRAI YOSHIKI (JP)
HIRAI YOSHIKI (JP)
International Classes:
B22F3/02; B22F1/105
Foreign References:
| JP2000087104A | 2000-03-28 | |||
| JPH11267893A | 1999-10-05 | |||
| JP2005526178A | 2005-09-02 | |||
| JP2001252793A | 2001-09-18 | |||
| JPS61166903A | 1986-07-28 |
Other References:
See also references of EP 2650065A4
Attorney, Agent or Firm:
OFUCHI, Michie et al. (JP)
Obuchi Yoshikazu glory (JP)
Obuchi Yoshikazu glory (JP)
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Claims: