Strukturbauteil

Details

Veröffentlichungs-Nr.

EP4714689

Anmeldetag

14. Juni 2024

Veröffentlichung

19. Dezember 2024

Rechtsraum

EP

IPC

B60G7/00, B21D22/02, B21D53/88B60G7/00

Abstract

A structural part comprised of steel sheet, the structural part having a flat part 10a and a bent part 10b, the bent part 10b satisfying the following formula (1), formula (2), and formula 3): 28≤√area≤450.17≤r/t≤6.900.22≤n′ where,√area is a square root of a projected area of fine defects at an inside bend side of the bent part 10b [µm]"r" is the smallest value of a radius of curvature of the inside bend side of the bent part 10b [mm]"t" is a sheet thickness of the flat part 10a [mm]n' is interquartile range of nano-hardness of flat part10a /mean nano-hardness.

Anmelder

Firma

Nippon Steel Corporation

Land

🇯🇵 Japan

Fachgebiete