Household device construction device
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Solution Overview
Problem
Existing household appliance coatings, particularly on stainless steel surfaces, face challenges in maintaining transparency and resistance to high temperatures while preventing oxidation and corrosion, often requiring costly and optically disruptive pretreatment processes.
Innovation Solution
A dual-coating system where a gas-diffusion dense, transparent first coating is applied using gas phase deposition methods, followed by a thermal melting process for a second coating, such as enamel, which is transparent and colorless, ensuring protection and maintaining the substrate's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent coating is applied to stainless steel to maintain appearance, then the optical properties are improved, but the coating cannot withstand high temperatures and corrosion
Solution Approach 1:
The coating system is divided into multiple functional layers: a base coating layer providing heat and corrosion resistance, and a transparent top coating layer maintaining optical properties. This segmentation allows each layer to specialize in one function, resolving the contradiction between transparency and heat resistance.
Solution Approach 2:
The invention uses composite coating structures combining different materials with complementary properties. The base layer uses heat-resistant materials while the top layer uses transparent materials, creating a composite system that achieves both heat resistance and transparency simultaneously.
2Reliability
If email coating is applied to stainless steel at high melting temperatures, then the coating provides protection, but the stainless steel surface oxidizes and discoloration occurs
Solution Approach 1:
A protective base coating layer is applied to the stainless steel surface before applying the email coating. This preliminary base layer acts as a barrier that prevents oxidation during the high-temperature melting process, allowing the email coating to be applied without causing surface discoloration.
Solution Approach 2:
The base coating layer serves as an intermediary between the stainless steel substrate and the email coating. It mediates the interaction by providing a protective barrier that prevents direct contact between oxygen and the metal surface during high-temperature processing.
3Strength
If the stainless steel surface is pretreated by roughening or brushing to improve adhesion, then the coating adhesion is improved, but the appearance of the surface is degraded
Solution Approach 1:
The coating system is segmented into a base layer that provides adhesion and a top layer that provides appearance. The base layer can be applied to a smooth surface and provides the bonding function, while the transparent top layer maintains the aesthetic appearance, eliminating the need for surface roughening.
4Strength
If adhesion oxides such as iron or cobalt oxide are applied to improve coating adhesion, then the adhesion is improved, but the optical impression of the stainless steel is destroyed
Solution Approach 1:
The base coating layer acts as an intermediary that provides adhesion without requiring colored adhesion oxides. It creates a bonding interface between the substrate and the transparent top coating, eliminating the need for iron or cobalt oxides that would compromise the optical 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 dual-coating system effectively prevents oxidation and corrosion, maintains the substrate's appearance, and allows for high-temperature applications without undesirable discoloration, reducing production costs and environmental impact.
Implementation Method 1
the first coating is substantially gas diffusion density and substantially transparent
Implementation Method 2
the first coating is applied by a coating method which has at least one gas phase deposition as a method step
Implementation Method 3
a glass material and/or ceramic material is melted in the melting process
Data Source
Figure 1~4
Figure 5~7
AI summary
The present invention relates to a household appliance assembly 1 and a method for producing a household appliance assembly 1. The household appliance assembly 1 is provided and suitable for a household appliance and in particular for a cooking appliance 3. The household appliance assembly 1 includes a substrate with a surface area 12. The surface area 12 is coated. In this case, the surface area 12 has a first gas-diffusion-tight and transparent coating. In addition, the surface area 12 has a second coating. The second coating is applied over the first coating.