Title:
SURFACE-TREATED STEEL PLATE
Document Type and Number:
Japanese Patent JP2023030618
Kind Code:
A
Abstract:
To disclose a surface-treated steel plate with excellent weldability and corrosion resistance.SOLUTION: A surface-treated steel plate has a plating steel plate having a zinc-containing plating layer, and a surface treatment layer provided on at least one main face of the plating steel layer. The surface treatment layer has a chemical conversion treatment layer and a coating film, and the coating film contains binder resin, an anti-rust agent, and a conductive agent. The chemical conversion treatment layer is in contact with the plating steel plate, and a ratio Tmax/Tmin of Tmax and Tmin measured under a predetermined condition using EPMA is 2.0 or more and 8.0 or less.SELECTED DRAWING: Figure 1
Inventors:
TOSHIN KUNIHIKO
KAWAMURA YASUAKI
KOGA ATSUO
UEDA DAICHI
KAWAMURA YASUAKI
KOGA ATSUO
UEDA DAICHI
Application Number:
JP2021135842A
Publication Date:
March 08, 2023
Filing Date:
August 23, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B32B15/08; C23C28/00; B32B15/09; B32B15/18; B32B27/18; B32B27/36
Attorney, Agent or Firm:
Aoki Atsushi
Shinji Mihashi
Ritsuo Fukuchi
Saito Manabu
Kenji Kimura
Jun Iwata
Shinji Mihashi
Ritsuo Fukuchi
Saito Manabu
Kenji Kimura
Jun Iwata