Title:
TREATMENT METHOD FOR STEEL SURFACE, AND PRODUCTION METHOD FOR STEEL
Document Type and Number:
Japanese Patent JP2004256896
Kind Code:
A
Abstract:
To provide a low-cost treatment method for a steel surface of only immersing steel into a pickling liquid which can be applied even for removing a surface abnormal layer and flaws in steel comprising pickling inhibition elements such as Cr, Mo and Si, and in which the time required for treatment is short, productivity is high, and further, management is facilitated.
In the method where steel is pickled and its surface is treated, at first, treatment is performed with a prescribed sulfohydrofluoric acid based pickling liquid, and successively, treatment is performed with a prescribed hydrochloric acid based pickling liquid.
Inventors:
HASHIMOTO IKUO
KATO ATSUSHI
TOYAMA MASAO
FUKUOKA YOSHITERU
KATO ATSUSHI
TOYAMA MASAO
FUKUOKA YOSHITERU
Application Number:
JP2003051534A
Publication Date:
September 16, 2004
Filing Date:
February 27, 2003
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C23G1/08; (IPC1-7): C23G1/08
Attorney, Agent or Firm:
Etsushi Kotani
Kyuichi Ueki
Kyuichi Ueki