Steel sheet for container and method of manufacturing the same

Abstract

The present invention provides a method of manufacturing a steel sheet for a container which has a plated layer containing Ni of 300 to 1000 mg/m 2 in terms of Ni metal, provided on at least one surface of a steel sheet, which has a chemical conversion treatment film containing Zr of 1.0 to 50 mg/m 2 in terms of Zr metal, provided on the steel sheet, which contains a phosphate compound of 0.5 to 25 mg/m 2 , and of which a F-atom number density measured by XPS analysis of a plane of 2 nm and a plane of 4 nm in a depth direction obtained by a sputtering treatment is equal to or less than 2 at %. The method includes forming the chemical conversion treatment film on the steel sheet by performing an immersion or a cathodic electrolytic treatment with a solution containing Zr ions, F ions, and phosphate ions, and performing a washing treatment with a warm water at 40° C. or higher for 0.5 or more seconds.

1 . A method of manufacturing a steel sheet for a container which has a plated layer containing Ni of 300 to 1000 mg/m 2  in terms of Ni metal, provided on at least one surface of the steel sheet, which has a chemical conversion treatment film containing Zr of 1.0 to 50 mg/m 2  in terms of Zr metal, provided on the steel sheet, which contains a phosphate compound of 0.5 to 25 mg/m 2 , and of which a F-atom number density measured by XPS analysis of a plane of 2 nm and a plane of 4 nm in a depth direction obtained by a sputtering treatment is equal to or less than 2 at %, the method comprising:
 forming the chemical conversion treatment film on the steel sheet by performing an immersion or a cathodic electrolytic treatment with a solution containing Zr ions, F ions, and phosphate ions; and   performing a washing treatment with warm water at 40° C. or higher for 0.5 or more seconds.   
     
     
         2 . The method of manufacturing the steel sheet for a container according to  claim 1 , the method further comprising:
 performing preliminary washing with water at a temperature of equal to or higher than 20° C. and equal to or less than 60° C. for 0.1 or more seconds before the washing treatment.   
     
     
         3 . A method of manufacturing a steel sheet for a container which has a plated layer containing Ni of 300 to 1000 mg/m 2  in terms of Ni metal and Sn of 100 to 1500 mg/m 2  in terms of Sn metal, provided on at least one surface of the steel sheet, which has a chemical conversion treatment film containing Zr of 1.0 to 50 mg/m 2  in terms of Zr metal, provided on the steel sheet, which contains a phosphate compound of 0.5 to 25 mg/m 2 , and of which a F-atom number density measured by XPS analysis of a plane of 2 nm and a plane of 4 nm in a depth direction obtained by a sputtering treatment is equal to or less than 2 at %, the method comprising:
 forming the chemical conversion treatment film on the steel sheet by performing an immersion or a cathodic electrolytic treatment with a solution containing Zr ions, F ions, and phosphate ions; and   performing a washing treatment with warm water at 40° C. or higher for 0.5 or more seconds.   
     
     
         4 . The method of manufacturing the steel sheet for a container according to  claim 3 , the method further comprising:
 performing preliminary washing with water at a temperature of equal to or higher than 20° C. and equal to or less than 60° C. for 0.1 or more seconds before the washing treatment.