Title:
METHOD FOR PICKLING STEEL PLATES AND PICKLING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/067955
Kind Code:
A1
Abstract:
Provided are a method for pickling steel plates, whereby an oxide scale formed in a process for producing Si-containing steel plates can be efficiently and uniformly removed, and a pickling device.
The method for pickling steel plates comprises immersing a silicon-containing steel plate in an acidic washing liquor containing microbubbles while applying thereto ultrasonic wave of 28.0 kHz inclusive to 1.0 MHz exclusive in frequency, said ultrasonic wave having at least two kinds of frequencies. The device for continuously pickling silicon-containing steel plates at least comprises a holder for holding a steel plate, a carrier for transporting the steel plate and a pickling tank for pickling the steel plate, wherein said pickling tank is provided with a means for supplying microbubbles and a means for applying ultrasonic wave of 28.0 kHz inclusive to 1.0 MHz exclusive in frequency, said ultrasonic wave having at least two kinds of frequencies.
Inventors:
NISHIMOTO, Takumi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
西本 工 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
西本 工 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
Application Number:
JP2010/059167
Publication Date:
June 09, 2011
Filing Date:
May 25, 2010
Export Citation:
Assignee:
NIPPON STEEL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
NISHIMOTO, Takumi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
NISHIMOTO, Takumi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
International Classes:
C23G1/08; B08B3/08; B08B3/10; B08B3/12
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, 〒1058423, JP)
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