Title:
レーザー溶接継手、自動車部品、レーザー溶接継手の製造方法および自動車部品の製造方法
Document Type and Number:
Japanese Patent JP6399106
Kind Code:
B2
Abstract:
A laser welded joint has weld metal provided between a plurality of steel sheets. A chemical composition of the weld metal has predetermined components, and average hardness of the weld metal is 350 to 540 in Vickers hardness. In the weld metal, distribution density of porosities having a diameter of 2 µm to 50 µm is equal to or less than 5.0 pieces/mm 2 . In the weld metal, distribution density of oxide inclusions having a diameter of 3 µm or more is 0.1 to 8.0 pieces/mm 2 .
Inventors:
Naoki Maruyama
Kyosho Naito
Shigeru Yonemura
宮▲崎▼ 康信
Takuya Kuwayama
Kyosho Naito
Shigeru Yonemura
宮▲崎▼ 康信
Takuya Kuwayama
Application Number:
JP2016560284A
Publication Date:
October 03, 2018
Filing Date:
November 19, 2015
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
C22C38/00; B23K26/322; C21D9/50; C22C38/58
Domestic Patent References:
| JP2012115840A | ||||
| JP10146686A | ||||
| JP11293398A | ||||
| JP11343538A | ||||
| JP2000109946A |
Attorney, Agent or Firm:
Masatake Shiga
Mitsuo Teramoto
Sumio Tanai
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Sumio Tanai
Tomoo Katsumata
Hiroshi Yamaguchi
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