Title:
COATED STEEL MATERIAL WITH EXCELLENT LASER CUTTABILITY, PRIMARY RUST PREVENTION PERFORMANCE, AND LEGIBILITY
Document Type and Number:
WIPO Patent Application WO/2013/065349
Kind Code:
A1
Abstract:
Provided is a coated steel material which combines excellent laser cuttability with excellent primary rust prevention performance and which is excellent in terms of legibility, in particular, the legibility of characters written with a white paint. Specifically, the coated steel material comprises a steel material and, formed as a dry coating film on a surface thereof, a coating film which contains a titania powder, a zinc powder, an aluminum powder, and a color pigment comprising one or more of black iron oxide pigments and black burned pigments, the contents of the titania powder, zinc powder, and aluminum powder being 4.5-26 g/m2, 5-30 g/m2, and 0.1-10 g/m2, respectively. When the contents of the titania powder, zinc powder, aluminum powder, and color pigment are expressed by A g/m2, B g/m2, C g/m2, and X g/m2, respectively, the value of Y represented by equation (1) is 0.010-0.200. The surface of the dry coating film has a Munsell lightness of 7.0 or less. Y=X/(A+B+C) (1)
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Inventors:
KOMORI TSUTOMU (JP)
KAGE ISAMU (JP)
SHIOTANI KAZUHIKO (JP)
KAGE ISAMU (JP)
SHIOTANI KAZUHIKO (JP)
Application Number:
PCT/JP2012/064731
Publication Date:
May 10, 2013
Filing Date:
June 01, 2012
Export Citation:
Assignee:
JFE STEEL CORP (JP)
KOMORI TSUTOMU (JP)
KAGE ISAMU (JP)
SHIOTANI KAZUHIKO (JP)
KOMORI TSUTOMU (JP)
KAGE ISAMU (JP)
SHIOTANI KAZUHIKO (JP)
International Classes:
B32B15/08; C09D5/10; C09D7/12; C09D201/00
Foreign References:
| JP2007290129A | 2007-11-08 | |||
| JP2009078374A | 2009-04-16 | |||
| JP2005095711A | 2005-04-14 | |||
| JP2000248388A | 2000-09-12 | |||
| JP2007230114A | 2007-09-13 |
Attorney, Agent or Firm:
KUMASAKA, Akira et al. (JP)
Akira Kumasaka (JP)
Akira Kumasaka (JP)
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Claims: