Title:
【発明の名称】鋼質金属の高速酸洗方法
Document Type and Number:
Japanese Patent JP2588646
Kind Code:
B2
Abstract:
A process of pickling surfaces of a steel-based metallic material containing iron, carbon and chromium at a high speed wherein the surfaces of the metallic material are pickled at a high speed by dipping and then pickling the surfaces of the metallic material in an aqueous solution of hydrochloric acid or an aqueous solution of hydrochloric acid-nitric acid mixture while at least one kind of ion selected from a group comprising a platinum ion, a palladium ion and a rhodium ion is contained in a hydrochloric acid having a temperature of 50 to 110 DEG C and a concentration of 100 to 450 g/l with NO3<-> ion contained therein by a quantity of 500 g/l or less, as desired, or pickling treatment in the aforementioned aqueous solution.
Inventors:
TSUCHINAGA MASAMITSU
ABE SEISABURO
ABE SEISABURO
Application Number:
JP10926591A
Publication Date:
March 05, 1997
Filing Date:
May 14, 1991
Export Citation:
Assignee:
SHINNIPPON SEITETSU KK
International Classes:
C23G1/08; C23G3/02; C25F1/06; (IPC1-7): C23G1/08; C25F1/06
Attorney, Agent or Firm:
Aoki Akira (4 outside)