US 12,226,853 B2
Surface processing method and structure
Yoichi Honmo, Miyagi (JP); Yasunori Kato, Miyagi (JP); Tsuyoshi Saito, Miyagi (JP); Masafumi Hosokawa, Miyagi (JP); Kenjiro Momi, Shizuoka (JP); Manabu Haraguchi, Shizuoka (JP); Yuji Furumaki, Shizuoka (JP); and Hiroshi Senda, Shizuoka (JP)
Assigned to TOYOKOH Co., Ltd., Shizuoka (JP)
Filed by TOYOKOH Co., Ltd., Shizuoka (JP)
Filed on Jul. 10, 2023, as Appl. No. 18/220,058.
Application 18/220,058 is a continuation of application No. PCT/JP2022/001077, filed on Jan. 14, 2022.
Claims priority of application No. 2021-005400 (JP), filed on Jan. 16, 2021.
Prior Publication US 2023/0347448 A1, Nov. 2, 2023
Int. Cl. B32B 15/01 (2006.01); B08B 3/04 (2006.01); B23K 26/362 (2014.01); B23K 26/142 (2014.01); B23K 101/34 (2006.01)
CPC B23K 26/362 (2013.01) [B08B 3/04 (2013.01); B32B 15/013 (2013.01); B23K 26/142 (2015.10); B23K 2101/34 (2018.08)] 7 Claims
OG exemplary drawing
 
1. A surface processing method of an iron based metallic material having a protective layer of zinc galvanizing formed thereon, comprising:
irradiating a surface of the protective layer with laser beam and scanning the surface, while moving an irradiation spot along the surface,
wherein, in a state in which a side layer of the protective layer along the iron based metallic material remains, another side layer of the protective layer opposite to the iron based metallic material side, including a deteriorated portion, is removed by the irradiating of the surface of the protective layer with the laser beam.