US 11,738,406 B2
Method for laser carving of paint on an outer surface of a vehicle wheel
Ching Jui Chang, Douliu (TW); Jui Lung Kao, Chiayi County (TW); Yung Sheng Wang, Yunlin County (TW); Viktor Robertsson, Gothenburg (SE); Andreas Andreen, Gothenburg (SE); and Juan Zhao, Shanghai (CN)
Assigned to Jian Sin Industrial Co., Ltd., Changhwa Hsien (TW); and Volvo Car Corporation, Goeteborg (SE)
Filed by JIAN SIN INDUSTRIAL CO., LTD., Changhwa Hsien (TW); and VOLVO CAR CORPORATION, Gothenburg (SE)
Filed on Jun. 24, 2020, as Appl. No. 16/910,545.
Claims priority of application No. 108124470 (TW), filed on Jul. 11, 2019.
Prior Publication US 2021/0008667 A1, Jan. 14, 2021
Int. Cl. B23K 26/352 (2014.01); B23K 26/70 (2014.01); B23K 26/362 (2014.01); B23K 26/40 (2014.01); B44C 1/22 (2006.01)
CPC B23K 26/355 (2018.08) [B23K 26/362 (2013.01); B23K 26/40 (2013.01); B23K 26/702 (2015.10); B44C 1/228 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method for laser carving of paint on an outer surface of a vehicle wheel, comprising:
a step of priming: applying a primer on an outer surface of the vehicle wheel to form a first layer or undercoat, and a color layer is applied on the primer and combined with the primer to obtain a colored painted surface;
a step of applying a protective paint to the painted surface of the vehicle wheel to form a first protective layer on the color layer which is located between the primer and the first protective layer;
a step of laser carving: carving a selected area of the primer from the vehicle wheel by laser to remove the painted surface from the selected area, the selected area having an exposed area with metallic luster, and being located on one of spokes of the vehicle wheel, the selected area of the painted surface being removed by way of carving to form patterns on the exposed area;
a step of fine-polish: polishing the outer surface of the vehicle wheel to form a fine-polished area at the exposed area; and
applying a protective paint to the outer surface of the vehicle wheel to form a second protective layer on the first protective layer, the fine polished face of the exposed area including the second protective layer formed thereon.