Verfahren zur Herstellung eines Pressgeformten Artikels

Details

Veröffentlichungs-Nr.

EP4748510

Anmeldetag

8. August 2024

Veröffentlichung

27. Februar 2025

Rechtsraum

EP

IPC

B21D22/26, B21D5/01, B21D22/20

Abstract

There is provided a press-forming method excellent in shape fixability and dimensional accuracy variation capable of stably mass-producing a component close to the target component shape. A method for manufacturing a press-formed article includes manufacturing a product having a curved portion curved convexly or concavely to the side of a top sheet portion in a cross section of a U-shape or the like. The method includes: a first step (2A) of forming an intermediate component (10) using a die with a first radius of curvature (R1) smaller than a top sheet radius of curvature (R0) in a product shape as a top sheet forming radius of curvature; and a second step (2B) of press-forming the intermediate component (10) using a die with a second radius of curvature (R2) equal to or larger than the top sheet radius of curvature (R0) in the product shape as a top sheet forming radius of curvature, in which the first radius of curvature (R1) is set such that a top sheet radius of curvature (R1') after die release of the intermediate component (10) is less than the top sheet radius of curvature (R0), and the first radius of curvature (R1) and the second radius of curvature (R2) are adjusted based on strain caused by the forming in the first step (2A) and the second step (2B).

Anmelder

Firma

JFE Steel Corporation

Land

🇯🇵 Japan