Method for producing hot-pressed member
First Claim
Patent Images
1. A method for producing a hot-pressed member comprising heating a coated steel sheet, which includes, on a surface thereof, a Zn—
- Ni alloy coating layer containing 10% by mass or more and less than 13% by mass of Ni at a coating weight of over 50 g/m2 per side of the steel sheet, in a temperature region of an Ac3 transformation point to 1200°
C. at an average heating rate of 12°
C./second or more; and
then hot-pressing the steel sheet.
0 Assignments
0 Petitions
Accused Products
Abstract
A method for producing a hot-pressed member includes heating a coated steel sheet, which includes, on a surface thereof, a Zn—Ni alloy coating layer containing 10% by mass or more and less than 13% by mass of Ni at a coating weight of over 50 g/m2 per side of the steel sheet, in a temperature region of an Ac3 transformation point to 1200° C. at an average heating rate of 12° C./second or more, and then hot-pressing the steel sheet.
9 Citations
11 Claims
-
1. A method for producing a hot-pressed member comprising heating a coated steel sheet, which includes, on a surface thereof, a Zn—
- Ni alloy coating layer containing 10% by mass or more and less than 13% by mass of Ni at a coating weight of over 50 g/m2 per side of the steel sheet, in a temperature region of an Ac3 transformation point to 1200°
C. at an average heating rate of 12°
C./second or more; and
then hot-pressing the steel sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- Ni alloy coating layer containing 10% by mass or more and less than 13% by mass of Ni at a coating weight of over 50 g/m2 per side of the steel sheet, in a temperature region of an Ac3 transformation point to 1200°
Specification