Title:
METHOD FOR RUST-PROOFING MOLD
Document Type and Number:
WIPO Patent Application WO/2013/057793
Kind Code:
A1
Abstract:
Provided is a method for rust-proofing a mold, which is capable of reducing the time and the cost required for rust-proofing a mold. A rust-proofing step (S1) of a mold (1) comprises: an iron hydroxide formation step (S11) wherein iron hydroxide is formed in a predetermined portion of the surface of the mold (1); and a surface treatment step (S12) wherein a coating film covering the molding surface of the mold (1) is formed and the iron hydroxide formed in the mold (1) is changed into black rust by heating the mold (1), in which iron hydroxide has been formed in the iron hydroxide formation step (S11), in an oxygen deficient atmosphere.
Inventors:
YAMAUCHI IKUO (JP)
FURUKAWA YUICHI (JP)
FURUKAWA YUICHI (JP)
Application Number:
PCT/JP2011/073937
Publication Date:
April 25, 2013
Filing Date:
October 18, 2011
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
YAMAUCHI IKUO (JP)
FURUKAWA YUICHI (JP)
YAMAUCHI IKUO (JP)
FURUKAWA YUICHI (JP)
International Classes:
B22D17/22; B22C9/06; C23C26/00; C23F15/00
Foreign References:
| JP2011073020A | 2011-04-14 | |||
| JP2006150395A | 2006-06-15 | |||
| JP2010285318A | 2010-12-24 | |||
| JP2010199328A | 2010-09-09 | |||
| JP2008105082A | 2008-05-08 | |||
| JPH09268265A | 1997-10-14 | |||
| JP2007118035A | 2007-05-17 |
Other References:
See also references of EP 2769783A4
Attorney, Agent or Firm:
YANO Juichiro (JP)
Juichiro Yano (JP)
Juichiro Yano (JP)
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Claims: