Method for making patterns on metal article and the resulting metal article
AssigneesFIH (Hong Kong) Limited, Shenzhen Futaihong Precision Industry Co., Ltd.
InventorsQUAN ZHOU, GUI-YUN YANG, XIN-WU GUAN, PO-FENG HO
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Abstract
A method for making patterns on a metal article comprises providing a metal substrate having an outer surface. A light-absorbing coating is formed on selected regions of the outer surface to reduce the surface laser reflectivity of the metal substrate. The selected regions cooperatively have a shape of a desired pattern. The selected regions are treated by laser-quenching, thereby hardening the selected regions. The outer surface is sandblasted, enabling the outer surface besides the selected regions to have a greater surface roughness than the selected regions. A metal article made by the method is also provided.
Claims12
A method for making patterns on a metal article, comprising:
- providing a metal substrate having an outer surface;
- forming a light-absorbing coating on selected regions of the outer surface to reduce the surface laser reflectivity of the metal substrate, the selected regions cooperatively forming a desired pattern;
- hardening the selected regions by laser-quenching the selected regions;
- and
- sandblasting the outer surface, enabling the outer surface besides the selected regions to have a greater surface roughness than the selected regions.
A metal article, comprising:
- a metal substrate having an outer surface, the outer surface having selected regions treated by laser-quenching, the outer regions of the outer surface besides the selected regions sandblasted to be a rough surface, the selected regions having a greater surface hardness than the other regions of the outer surface besides the selected regions, the other regions of the outer surface besides the selected regions having a greater surface roughness than the selected regions.
Dependencies are inferred from the claim text.