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Title:
STEEL SHEET FOR PORCELAIN ENAMELING AND METHOD FOR PRODUCTION THEREOF, AND ENAMELED PRODUCT AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2002/050326
Kind Code:
A1
Abstract:
A method for producing a steel sheet for porcelain enameling, wherein an aluminum killed steel sheet, a high oxygen steel sheet, a Ti-containing steel sheet, a Nb-containing steel sheet or a B-containing steel sheet which has a specific chemical composition including a low carbon content is plated with a Ni-Mo alloy and then is subjected to a heat treatment in a manner such that the surface of each steel sheet has specific ranges of contents of Ni, Mo and Fe; a steel sheet for porcelain enameling produced by the method; a method for producing an enameled product wherein the above steel sheet is coated with a cover coat enamel and then fired; and an enameled product produced by the method. The steel sheet for porcelain enameling exhibits excellent formability and also allows the achievement of excellent adhesiveness of porcelain enamel to a steel sheet and the production of an enamel layer free of a black point defect, with one time application of a cover coat enamel.

Inventors:
Sato, Fumiaki c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Hamada, Toshihira c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Oda, Shuzo c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Jono, Yoshihiro c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Hayashida, Takahiro c/o TOYO KOHAN CO. (LTD. Technical Research Laboratory 1296-1 Higashitoyoi Kudamatsu-shi, Yamaguchi, 744-8611, JP)
Fujimoto, Junichi c/o TOYO KOHAN CO. (LTD. Technical Research Laboratory 1296-1 Higashitoyoi Kudamatsu-shi, Yamaguchi, 744-8611, JP)
Komai, Masao c/o TOYO KOHAN CO. (LTD. Technical Research Laboratory 1296-1 Higashitoyoi Kudamatsu-shi, Yamaguchi, 744-8611, JP)
Application Number:
PCT/JP2001/011025
Publication Date:
June 27, 2002
Filing Date:
December 17, 2001
Export Citation:
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Assignee:
TOYO KOHAN CO., LTD. (2-12, Yonbancho Chiyoda-ku, Tokyo, 102-8447, JP)
FERRO ENAMELS (JAPAN) LIMITED (1-27, Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Sato, Fumiaki c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Hamada, Toshihira c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Oda, Shuzo c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Jono, Yoshihiro c/o FERRO ENAMELS LIMITED 1-27 (Oyodo Kita 2-Chome Kita-ku Osaka-shi, Osaka, 531-8526, JP)
Hayashida, Takahiro c/o TOYO KOHAN CO. (LTD. Technical Research Laboratory 1296-1 Higashitoyoi Kudamatsu-shi, Yamaguchi, 744-8611, JP)
Fujimoto, Junichi c/o TOYO KOHAN CO. (LTD. Technical Research Laboratory 1296-1 Higashitoyoi Kudamatsu-shi, Yamaguchi, 744-8611, JP)
Komai, Masao c/o TOYO KOHAN CO. (LTD. Technical Research Laboratory 1296-1 Higashitoyoi Kudamatsu-shi, Yamaguchi, 744-8611, JP)
International Classes:
C25D5/12; B32B15/01; C22C38/00; C22C38/04; C22C38/06; C22C38/12; C22C38/14; C22C38/60; C23C26/00; C23C28/00; C23C30/00; C23D3/00; C25D5/50; (IPC1-7): C22C38/00; C25D5/26; C25D5/50
Foreign References:
JPS5632399B21981-07-27
JPH06279864A1994-10-04
JPH06279865A1994-10-04
JPH07118755A1995-05-09
JPS4718725A
JPS581170B21983-01-10
Other References:
See also references of EP 1347070A1
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