Title:
PRODUCTION METHOD OF CRASH BOX
Document Type and Number:
Japanese Patent JP2020117755
Kind Code:
A
Abstract:
To provide a production method of a crash box that is easily deformed in bellow, and can surely absorb impact energy.SOLUTION: The present invention is applied to a production method of a crash box in which a first layer and a second layer having strength lower than the first layer are alternately formed in a longitudinal direction of the crash box. The production method of the crash box according to the present invention includes a process of alternately molding the first layer and the second layer in a longitudinal direction of the crash box, while irradiating metal powder with laser, the first layer is molded by irradiating the crash box in stripe with laser, and the second layer is molded by laser irradiation so as to trace a contour of the crash box.SELECTED DRAWING: Figure 5
Inventors:
SAJIMA MAMI
Application Number:
JP2019008642A
Publication Date:
August 06, 2020
Filing Date:
January 22, 2019
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B22F3/105; B22F3/16; B22F5/00; B33Y10/00; B60R19/34
Attorney, Agent or Firm:
Ken Ieiri