Title:
PROCESS FOR PRODUCTION OF ROUGHLY SHAPED MATERIAL FOR ENGINE PISTON
Document Type and Number:
WIPO Patent Application WO/2011/002082
Kind Code:
A1
Abstract:
Disclosed is a process for producing a roughly shaped material for engine pistons, which comprises: a continuous casting step of continuously casting a molten aluminum alloy (30) at a melt temperature of 720˚C or higher to produce a casted rod (31) having a diameter of 85 mm or less; and a forging step of homogenizing the casted rod (31) at a temperature of 370 to 500°C to produce a forging material (32) and forging the forging material (32) to produce a roughly shaped material (11) for engine pistons. The molten aluminum alloy (30) has the following composition: Si: 11.0 to 13.0 mass%, Fe: 0.6 to 1.0 mass%, Cu: 3.5 to 4.5 mass%, Mn: 0.25 mass% or less, Mg: 0.4 to 0.6 mass%, Cr: 0.15 mass% or less, Zr: 0.07 to 0.15 mass%, P: 0.005 to 0.010 mass%, and Ca: 0.002 mass% or less, with the remainder being Al and unavoidable impurities.
Inventors:
TAKEMURA HIDEKI (JP)
MURAKAMI HIROAKI (JP)
MURAKAMI HIROAKI (JP)
Application Number:
PCT/JP2010/061329
Publication Date:
January 06, 2011
Filing Date:
July 02, 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; C22C21/02; F02F3/00; F16J1/01
Foreign References:
| JP2005290545A | 2005-10-20 | |||
| JP2000265232A | 2000-09-26 | |||
| JP2007118040A | 2007-05-17 | |||
| JPH08104937A | 1996-04-23 | |||
| JPH06279904A | 1994-10-04 | |||
| JP2001181769A | 2001-07-03 |
Other References:
See also references of EP 2453034A4
Attorney, Agent or Firm:
SHIMIZU Yoshihito et al. (JP)
Yoshihito Shimizu (JP)
Yoshihito Shimizu (JP)
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