Method for manufacturing a component, component and gas hob
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Solution Overview
Problem
Existing gas hob components made of aluminum are prone to wear and corrosion during cleaning due to their lack of adequate abrasion and chemical resistance, necessitating improved manufacturing methods to enhance durability and aesthetic appeal.
Innovation Solution
A plasma electrolytic oxidation (PEO) treatment is applied to the surface of aluminum alloy components, involving polishing with abrasive particles and immersion in an electrolyte solution under controlled voltage, resulting in a thick, hard ceramic oxide coating with high hardness and elasticity, enhancing wear and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If aluminum components are used for gas hobs, then lightweight and cost-effective parts are achieved, but abrasion and corrosion resistance deteriorate
Solution Approach 1:
The patent applies plasma electrolytic oxidation to create a composite structure consisting of the aluminum base material and a ceramic oxide coating layer. This composite structure combines the advantages of aluminum (lightweight, cost-effective) with the advantages of ceramic oxides (high hardness, excellent abrasion and corrosion resistance), thereby resolving the contradiction between weight and reliability.
Solution Approach 2:
The patent uses plasma electrolytic oxidation, which involves accelerated oxidation through electrochemical reactions in a plasma environment. This process forms a thick, dense ceramic oxide coating on the aluminum surface, significantly improving abrasion and corrosion resistance while maintaining the lightweight properties of the aluminum substrate.
2Ease of manufacture
If conventional surface treatment is applied to aluminum, then ease of manufacture is maintained, but hardness and wear resistance improve insufficiently
Solution Approach 1:
The patent employs plasma electrolytic oxidation, which uses strong oxidizing conditions through electrochemical reactions in a plasma environment. This process efficiently forms a thick, hard ceramic oxide coating on aluminum components, achieving Vickers hardness of over 1000 HV while maintaining manufacturing simplicity as the process can be directly applied to complex component geometries.
3Reliability
If thick oxide coating is formed by PEO, then abrasion resistance is improved, but surface flexibility may deteriorate
Solution Approach 1:
The patent performs preliminary polishing of the aluminum surface before applying plasma electrolytic oxidation. This preliminary action creates a uniformly roughened surface that improves coating adhesion and ensures uniform coating thickness, allowing the formation of a thick protective layer without compromising the flexibility of the underlying aluminum substrate. The roughened surface provides mechanical interlocking that prevents coating delamination while maintaining substrate flexibility.
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 PEO-treated components exhibit a Vickers hardness of over 1000 HV, providing improved cleanability, abrasion resistance, and aesthetic options like colors or finishes, while maintaining flexibility under shear stress, thus extending component lifespan and reducing maintenance needs.
Implementation Method 1
treating a surface (16) by plasma electrolytic oxidation (PEO)
Implementation Method 2
a oxide film is formed at a thickness of ≥5 μm to ≤50 μm on the surface of the magnesium base material by anodic oxidation treatment or plasma electrolytic oxidation treatment
Implementation Method 3
the surface is pretreated by polishing with abrasive particles
Data Source
Figure 1~2
Figure 3~4
AI summary
A method for manufacturing a component (3, 4, 5, 6, 7, 8, 9) for a gas hob (1), the method comprising treating a surface (16) by plasma electrolytic oxidation.