Laser Oxide Coloring of Metal Components Without Cutting
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Solution Overview
Problem
Existing metal component decorating methods using laser processing struggle to achieve selective coloring without simultaneous cutting, making it difficult to satisfy the need for only coloring when desired.
Innovation Solution
A metal component decorating method involving laser irradiation with scanning patterns that form an oxide film with varying thickness based on the overlap density of irradiation spots, allowing for gradation effects through light interference, enabling selective coloring without cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple laser processing rounds are performed with different overlap amounts, then decoration versatility is improved, but processing time increases
Solution Approach 1:
The patent employs periodic laser irradiation with varying overlap amounts between successive rounds of processing. By systematically adjusting the overlap amount in each periodic cycle, diverse decoration patterns and oxide film thicknesses are achieved while maintaining efficient processing through repeated application of the same fundamental laser coloring mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method efficiently creates various decorations, including radial and concentric gradations, by controlling the overlap density of laser irradiation spots, allowing for precise color changes and efficient oxide film formation on metal components without simultaneous cutting.
Implementation Method 1
an oxide film is formed at a front surface of the metal component by the laser irradiation
Implementation Method 2
gradation due to interference of light is provided in accordance with the density
Data Source
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AI summary
Provided is a decorating method for decorating a metal component by laser irradiation. The method includes performing laser irradiation while scanning, with a first element as a starting point, along a direction toward the metal component, and an oxide film is formed on the front surface of the metal component by the laser irradiation.