Title:
METHOD FOR PRODUCING NEAR-NET-SHAPE MATERIAL FOR ENGINE PISTON
Document Type and Number:
WIPO Patent Application WO/2011/052708
Kind Code:
A1
Abstract:
Disclosed is a method for producing a near-net-shape material for an engine piston, which comprises: a continuous casting step in which a cast rod (31) having a diameter of 85 mm or less is obtained by continuously casting a melt (30) of an aluminum alloy at a melt temperature of 720˚C or more; and a forging step in which a near-net-shape material (11) for an engine piston is obtained by forging a material for forging (32) that has been obtained by homogenizing the cast rod (31) at a temperature of 300-500˚C. The melt (30) has a composition that contains 11.0-13.0% of Si, 0.6-1.0% of Fe, 3.5-4.5% of Cu, 0.25% or less of Mn, 0.4-0.6% of Mg, 0.15% or less of Cr, from 0.6% to {(-4/6) × [Cu mass%] + 5}% of Ni, 0.07-0.15% of Zr, 0.005-0.010% of P, and 0.002 mass% or less of Ca, with the balance made up of Al and unavoidable impurities.
Inventors:
TAKEMURA HIDEKI (JP)
MURAKAMI HIROAKI (JP)
MURAKAMI HIROAKI (JP)
Application Number:
PCT/JP2010/069255
Publication Date:
May 05, 2011
Filing Date:
October 29, 2010
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
TAKEMURA HIDEKI (JP)
MURAKAMI HIROAKI (JP)
TAKEMURA HIDEKI (JP)
MURAKAMI HIROAKI (JP)
International Classes:
C22F1/043; B21J5/00; B21K1/18; B22D11/00; B22D11/04; B22D11/041; C22C21/02; F02F3/00; F16J1/01; C22F1/00
Domestic Patent References:
| WO2008016169A1 | 2008-02-07 |
Foreign References:
| JP2005290545A | 2005-10-20 | |||
| JP2004068152A | 2004-03-04 | |||
| JP2003035198A | 2003-02-07 | |||
| JPH10226840A | 1998-08-25 |
Attorney, Agent or Firm:
SHIMIZU Yoshihito et al. (JP)
Yoshihito Shimizu (JP)
Yoshihito Shimizu (JP)
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