US 12,472,715 B2
Damage evaluation device and damage evaluation method for press-forming die
Hiroto Miyake, Tokyo (JP)
Assigned to JFE STEEL CORPORATION, Tokyo (JP)
Appl. No. 18/276,370
Filed by JFE STEEL CORPORATION, Tokyo (JP)
PCT Filed Mar. 4, 2022, PCT No. PCT/JP2022/009295
§ 371(c)(1), (2) Date Aug. 8, 2023,
PCT Pub. No. WO2022/196385, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 2021-042002 (JP), filed on Mar. 16, 2021.
Prior Publication US 2024/0123700 A1, Apr. 18, 2024
Int. Cl. B30B 15/28 (2006.01); B30B 9/28 (2006.01); B30B 15/02 (2006.01)
CPC B30B 15/28 (2013.01) [B30B 9/28 (2013.01); B30B 15/02 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A damage evaluation device for a press-forming die, the damage evaluation device comprising:
evaluation dies installed in a pressing device configured to press-form a metal material; and
an observation device configured to observe damage behavior of a die steel material and surface coating constituting the evaluation dies,
wherein the evaluation dies include:
a perforating unit configured to form a hole in the metal material;
a first shearing unit configured to shear the metal material in which the hole is formed into a predetermined metal component shape; and
a second shearing unit configured to separate a metal component from the metal material, and
dies of the perforating unit, the first shearing unit and the second shearing unit are formed of the die steel material and have a structure that enables replacement with another die made of predetermined material and applied with predetermined surface coating treatment.