Metal Surface Treatment with Micro-Arc Oxidation and Anti-Fingerprint Coating
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Solution Overview
Problem
Traditional micro-arc oxidation processes on metal substrates require additional appearance paint application to achieve a final metal appearance effect, which is prone to abrasion and peeling due to insufficient surface strength and texture issues.
Innovation Solution
A surface treatment method combining surface sandblasting, micro-arc oxidation, and anti-fingerprint coating, using specific electrolytic and paint compositions to enhance surface texture and strength, eliminating the need for additional paint application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional micro-arc oxidation process is applied to metal substrate, then surface oxidation layer is formed, but surface strength is insufficient and additional appearance paint is required which is prone to peeling
Solution Approach 1:
Surface sandblasting treatment is performed before micro-arc oxidation to eliminate surface flaws and create a roughened substrate. This preliminary action enhances the surface texture and provides better anchoring for the subsequent oxidation layer, thereby improving surface strength and eliminating the need for additional appearance paint that would be prone to peeling.
Solution Approach 2:
The electrolytic solution composition is optimized with specific concentrations of sodium phosphate, sodium silicate, sodium aluminate, potassium fluoride, potassium hydroxide, ammonium vanadate, potassium vanadate, disodium ethylenediaminetetraacetic acid, and sodium tetraborate. These parameter changes in the electrolytic solution enhance the quality of the micro-arc oxidized surface, improving surface strength and creating a durable stone-imitated texture appearance.
2Shape
If additional appearance paint is applied after micro-arc oxidation, then final metal appearance effect is achieved, but paint peeling occurs due to insufficient surface strength
Solution Approach 1:
Surface sandblasting is performed as a preliminary action before micro-arc oxidation to eliminate surface flaws and create a roughened substrate. This enhances the surface texture and provides better anchoring for the oxidation layer, eliminating the need for additional appearance paint that would be prone to peeling.
Solution Approach 2:
The electrolytic solution contains a composite formulation with multiple chemical components including sodium phosphate, sodium silicate, sodium aluminate, potassium fluoride, potassium hydroxide, ammonium vanadate, potassium vanadate, disodium ethylenediaminetetraacetic acid, and sodium tetraborate. This composite electrolytic solution creates a micro-arc oxidized surface with enhanced strength and stone-imitated texture appearance.
3Manufacturing precision
If traditional micro-arc oxidation is applied, then oxidation surface is formed, but surface texture quality is poor with visible flaws and rill marks
Solution Approach 1:
Surface sandblasting treatment is performed before micro-arc oxidation to eliminate surface flaws and create a roughened substrate. This preliminary action removes visible defects and rill marks, providing a clean foundation for the oxidation process and resulting in exquisite surface texture.
Solution Approach 2:
The electrolytic solution is formulated with optimized concentrations of multiple chemicals including sodium phosphate, sodium silicate, sodium aluminate, potassium fluoride, potassium hydroxide, ammonium vanadate, potassium vanadate, disodium ethylenediaminetetraacetic acid, and sodium tetraborate. These parameter changes enhance the micro-arc oxidation process to produce a high-quality surface with stone-imitated texture appearance.
4Object-affected harmful factors
If metal substrate surface is left untreated, then natural metal appearance is maintained, but resistance to fingerprint residue is insufficient
Solution Approach 1:
The patent combines surface sandblasting treatment, micro-arc oxidation treatment, and anti-fingerprint coating into a single integrated treatment process. This merging of multiple functions into one comprehensive process enhances fingerprint resistance while maintaining a relatively simple overall procedure that can be completed in sequence without requiring separate complex treatment steps.
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
The method improves surface strength and texture, providing a durable, stone-imitated appearance with anti-fingerprint properties, preventing paint peeling and enhancing resistance to fingerprint residue.
Implementation Method 1
applying micro-arc oxidation treatment to the sandblasted surface in combination with an electrolytic solution to form a micro-arc oxidized surface
Implementation Method 2
applying micro-arc oxidation treatment to the sandblasted surface in combination with an electrolytic solution to form a micro-arc oxidized surface
Implementation Method 3
applying surface sandblasting treatment to the appearance surface to form a sandblasted surface
Implementation Method 4
forming a coating to cover the micro-arc oxidized surface
Data Source
AI summary
The disclosure provides a surface treatment method which is suitable for a metal substrate. The metal substrate has an appearance surface. The surface treatment method comprises the following steps: first, applying surface sandblasting treatment to an appearance surface to form a sandblasted surface; subsequently, applying micro-arc oxidation treatment to the sandblasted surface in combination with an electrolytic solution to form a micro-arc oxidized surface; and then forming a coating to cover the micro-arc oxidized surface; wherein, the components of the electrolytic solution comprise sodium phosphate, sodium silicate, sodium aluminate, potassium fluoride, potassium hydroxide, ammonium vanadate, potassium vanadate, disodium ethylenediaminetetraacetic acid (Na2EDTA) and sodium tetraborate.