ホイールディスク及びその製造方法

Title:

ホイールディスク及びその製造方法

Document Type and Number:

Japanese Patent JP7256904

Kind Code:

B2

Abstract:

A wheel disc, according to one aspect of the present invention, having a bolt hole for bolt fastening is divided into a first region, which extends in the circumferential direction of the bolt hole so as to have a preset width, and a second region excluding the first region, wherein the first region can be provided so as to have an average tensile strength lower than that of the second region.

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Inventors:

Kim, Hong-ki
Sung, Hyun-sung
Lee, Min-Sung
Kwon, Hyuk-sung
Chun, Young-Il

Application Number:

JP2021570255A

Publication Date:

April 12, 2023

Filing Date:

September 16, 2020

Export Citation:

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Assignee:

POSCO Company Limited

International Classes:

B60B3/04; B21D22/20; B21D53/26; C21D1/18; C21D9/00; C21D9/34

Domestic Patent References:

JP10225738A
JP8108702A
JP2009113786A

Attorney, Agent or Firm:

Hidekazu Miyoshi
Yuko Hara
Kazushi Obuchi

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