| 摘要 |
A black steel sheet having a sufficiently small coating thickness to allow the welding of the steel sheet, and yet exhibiting an excellently black surface. It is a steel sheet having a surface plated with zinc or a zinc alloy, and carrying a chromate film formed on its plated surface, and a black film formed on the chromate film from a composition comprising specific proportions of a thermosetting resin and a black dye, which are both soluble in an organic solvent, and having a sufficiently small thickness. The composition may further contain a solid lubricant, or a granular rust-inhibitive pigment, or both. |
| 申请人 |
NKK CORP., TOKIO/TOKYO, JP |
发明人 |
YOSHIMI, NAOTO, C/O NKK CORPORATION, TOKYO, JP;WATANABE, TOYOFUMI, C/O NKK CORPORATION, TOKYO, JP;YAMASHITA, MASAAKI, C/O NKK CORPORATION, TOKYO, JP;OOKUMA, TOSHIYUKI, C/O NKK CORPORATION, TOKYO, JP;MIYOSHI, TATSUYA, C/O NKK CORPORATION, TOKYO, JP;WATANABE, TSUTOMU, C/O NKK CORPORATION, TOKYO, JP |
