Verfahren zur Herstellung von gepresstem Teil und Stahlblech zur Pressbearbeitung

Details

Veröffentlichungs-Nr.

EP2803737

Aktenzeichen

EP14166981

Anmeldetag

5. Mai 2014

Veröffentlichung

4. November 2015

Rechtsraum

EP

IPC

C21D8/12B21D28/00C23C10/04C23C10/08C23C10/60C21D1/673

Abstract

Provided is a method of manufacturing a pressed part, which imparts excellent formability on a steel sheet, and the steel sheet for press working used in the manufacturing of the pressed part when the pressed part is manufactured with a silicon steel sheet. A manufacturing method includes a process of siliconizing a low-silicon steel sheet (14) which becomes a material of a high-silicon steel sheet in a state where a surface of a to-be-pressed portion (16) is coated with a mask (30); and a process of pressing the to-be-pressed portion (16) of the siliconized high-silicon steel sheet as a workpiece. Since the surface of the to-be-pressed portion (16) is coated with the mask (30) and the siliconizing treatment is performed, it is possible to obtain the high-silicon steel sheet in which the to-be-pressed portion (16) is softer than other portions. Since the high-silicon steel sheet is pressed, the steel sheet is excellent in formability during the press working.

Anmelder

Firma

SUMITOMO HEAVY INDUSTRIES, LTD.

Land

🇯🇵 Japan

Fachgebiete