Title:
METHOD FOR IMPROVING RESISTANCE OF STAINLESS STEEL TO RICE WINE @(3754/24)JAPANESE SAKE)
Document Type and Number:
Japanese Patent JP3213410
Kind Code:
B2
Abstract:
PURPOSE: To provide the method for obtaining stainless steel which does not discolor rice wine (Japanese sake) by washing stainless steel, which is relatively inexpensive and superior in both corrosion resistance and machinability, with an acid by a relatively safe method.
CONSTITUTION: The stainless steel consisting of ≤0.08wt.% C, ≤1.0wt.% Si, ≤0.7wt.% Mn, ≤0.04wt.% P, ≤0.005wt.% S, 8.0-12.0wt.% Ni, 17.0-20.0wt.% Cr, 0.40-0.80wt.% Mo, 0.10-0.30wt.% Cu, 0.03-0.12wt.% Bi, and the balance Fe with in evitable impurities is washed in a nitric acid solution, or washed in a nitric acid plus ammonium fluoride solution and then in a nitric acid solution. Consequently, the stainless steel which is small in the elution of Fe ions even when used in Japanese sake environment is obtained.
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Inventors:
Yoshinori Nakayama
Kikuo Takizawa
Kikuo Takizawa
Application Number:
JP29996192A
Publication Date:
October 02, 2001
Filing Date:
November 10, 1992
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
C22C38/00; C22C38/44; C23C22/50; C23G1/08; (IPC1-7): C23G1/08; C22C38/00; C22C38/44; C23C22/50
Domestic Patent References:
| JP5112884A |
Attorney, Agent or Firm:
Masamasa Shibano