Invention Grant
- Patent Title: Method for marking on metallic member
- Patent Title (中): 在金属部件上标记的方法
-
Application No.: US14037759Application Date: 2013-09-26
-
Publication No.: US09346124B2Publication Date: 2016-05-24
- Inventor: Kenji Kato , Kenji Isaka
- Applicant: NGK INSULATORS, LTD.
- Applicant Address: JP Nagoya
- Assignee: NGK INSULATORS, LTD.
- Current Assignee: NGK INSULATORS, LTD.
- Current Assignee Address: JP Nagoya
- Agency: Global IP Counselors, LLP
- Priority: JP2011-075962 20110330
- Main IPC: B23K26/00
- IPC: B23K26/00 ; B23K26/18 ; B21C51/00

Abstract:
Provided is a method for marking on a pressed metallic component whose visibility and corrosion resistance in a marking target is ensured. The method includes a step of irradiating a base treatment target region including a marking target region with a laser beam on a first irradiation condition, and a step of irradiating the marking target region with the laser beam on a second irradiation condition, in which a charged energy of the laser beam is set to be smaller on the first irradiation condition than the second irradiation condition, thereby providing between the marking pattern and a non-irradiation region, a base region having a residual stress greater than that of the non-irradiation region and a residual stress smaller than that of the marking pattern, so as to ensure a visibility. Furthermore, a corrosion resistance is ensured by using a metallic member which is heat-treated to enhance the hardness.
Public/Granted literature
- US20140027412A1 METHOD FOR MARKING ON METALLIC MEMBER Public/Granted day:2014-01-30
Information query