Title:
Fe-BASED ELECTROPLATED STEEL SHEET, ALLOYED HOT-DIP GALVANIZED STEEL SHEET, AND METHOD OF PRODUCING THEM
Document Type and Number:
Japanese Patent JP2023054818
Kind Code:
A
Abstract:
To provide an Fe-based electroplated steel sheet not only excellent in chemical processability or in plating appearance when hot-dip galvanization is applied thereto, but also excellent in weld crack resistance.SOLUTION: The Fe-based electroplated steel sheet according to the present invention comprises a cold rolled steel sheet of a component composition including Si in an amount of 0.1 mass% or more and 3.0 mass% or less, and an Fe-based electroplated layer(s) of a coating weight per one side of 1.0 g/m2 or more, formed on one side or both sides of the cold rolled steel sheet, with the thickness of an inner oxide layer being 2.00 μm or less, and the mean value of carbon concentration in a range of 10 μm or more and 20 μm or less from the surface of the Fe-based electroplated layer in the direction of the sheet thickness, being 0.10 mass% or less.SELECTED DRAWING: Figure 1
Inventors:
Shunsuke Yamamoto
Yusuke Okumura
▲高▼島 克利
Mai Aoyama
Tomomi Kanazawa
Katsuya Hoshino
Yoichi Makimizu
Takashi Kono
Takako Yamashita
Hiroshi Matsuda
Yusuke Okumura
▲高▼島 克利
Mai Aoyama
Tomomi Kanazawa
Katsuya Hoshino
Yoichi Makimizu
Takashi Kono
Takako Yamashita
Hiroshi Matsuda
Application Number:
JP2023012353A
Publication Date:
April 14, 2023
Filing Date:
January 30, 2023
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C25D5/26; C21D3/04; C21D9/46; C22C18/00; C22C38/00; C22C38/06; C22C38/60; C23C2/02; C23C2/06; C23C2/26; C23C2/28; C23C2/40; C23C28/00; C23C28/02; C25D5/48; C25D5/50
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Keisuke Kawahara
Mitsutsugu Sugimura
Keisuke Kawahara