Light-Reflection Aluminum Door Frame Molding via Multi-Layer Coating
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Solution Overview
Problem
Conventional light-reflection door frame moldings, whether made from stainless steel or aluminum, face issues with corrosion resistance and increased costs, with existing methods leading to unsatisfactory performance in environmental conditions and aesthetic concerns for customers.
Innovation Solution
A method involving anodizing of aluminum plates to form an oxidized film, followed by opaque and transparent clear coatings, and press molding to create a light-reflection aluminum door frame molding that enhances corrosion resistance and reduces costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If stainless steel material with emboss is used for light-reflection molding, then light reflection is achieved, but corrosion resistance deteriorates due to red rust generation
Solution Approach 1:
The patent uses a composite structure consisting of an aluminum base material combined with multiple coating layers (primer coating, intermediate coating, and clear coating). This composite material approach provides both the light reflection capability through the clear coating layer and superior corrosion resistance through the protective coating system and aluminum base, resolving the contradiction between light reflection and corrosion resistance.
Solution Approach 2:
The patent changes the base material from stainless steel to aluminum, and modifies the surface treatment parameters by applying a multi-layer coating system with specific thicknesses (primer: 5-15 μm, intermediate: 10-20 μm, clear: 5-15 μm). This parameter change enables achieving both bright light reflection and enhanced corrosion resistance, overcoming the limitations of stainless steel with emboss.
2Illumination intensity
If light-reflection aluminum molding with chemical polishing and anodizing is used, then light reflection is achieved, but corrosion resistance deteriorates due to white rust generation and environmental resistance is insufficient
Solution Approach 1:
The patent employs a composite material system with aluminum base and multi-layer coatings (primer, intermediate, clear) to achieve superior corrosion resistance while maintaining light reflection. The clear coating layer provides the reflective surface, while the primer and intermediate layers provide corrosion protection, overcoming the white rust issue of anodized aluminum.
Solution Approach 2:
The patent applies primer coating and intermediate coating before the clear coating to establish a protective barrier system in advance. This preliminary action of applying multiple protective layers prevents corrosion before it can occur, while the final clear coating provides the light reflection function, thus resolving the contradiction.
3Illumination intensity
If light-reflection aluminum molding with chemical polishing and anodizing is used, then light reflection is achieved, but manufacturing cost increases by two times compared to SUS material
Solution Approach 1:
The patent uses aluminum base material which is inherently cheaper than stainless steel, combined with a multi-layer coating system that provides durable light reflection. This approach replaces the expensive stainless steel with a more cost-effective aluminum substrate and coating combination, reducing manufacturing costs while maintaining or improving performance.
Solution Approach 2:
The patent creates a cost-effective composite material system using aluminum base with multi-layer coatings. This composite approach achieves the desired light reflection and corrosion resistance at lower cost compared to stainless steel, by using cheaper materials strategically combined to provide the required functionality.
4Illumination intensity
If stainless steel material with emboss is used for light-reflection molding, then light reflection is achieved, but aesthetic appearance deteriorates due to dark colors
Solution Approach 1:
The patent changes the base material from stainless steel to aluminum and modifies the surface treatment to apply a clear coating layer with high gloss finish. This parameter change produces a bright, reflective surface with excellent aesthetic appearance, overcoming the dark color issue of embossed stainless steel while maintaining light reflection functionality.
Solution Approach 2:
The patent uses a composite structure with aluminum base and clear coating layer that provides a bright, reflective surface. This composite material approach achieves superior aesthetic appearance with bright colors and high gloss finish, resolving the contradiction between light reflection and aesthetic appearance.
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 provides improved corrosion resistance and cost reduction for light-reflection aluminum door frame moldings, outperforming conventional techniques in corrosion tests and meeting customer preferences for bright colors.
Implementation Method 1
performing anodizing on the metallic plate to form an oxidized film on a surface of the metallic plate
Implementation Method 2
forming an oxidized film on a surface of the metallic plate
Implementation Method 3
performing opaque clear coating and transparent coating on the metallic plate on which the oxidized film has been formed to implement light reflection
Data Source
AI summary
Disclosed is a method for manufacturing a light-reflection aluminum door frame molding which comprises a multi-coating-applied aluminum material to thereby improve corrosion resistance and reduce costs. A method for manufacturing a light-reflection aluminum door frame molding includes cutting a metallic plate into a predetermined size, performing anodizing on the metallic plate to form an oxidized film on a surface thereof, performing opaque clear coating and transparent coating on the metallic plate to implement light reflection, and performing press molding on the metallic plate to provide the metallic plate in the shape of a door frame molding.