Aluminum Wheel Multi-Color Ceramic Coating for Corrosion Resistance
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Solution Overview
Problem
Existing aluminum alloy wheel surface treatment methods result in poor corrosion resistance and complex wastewater treatment due to the use of acids and alkalis, and lack multi-color and personalized pattern effects.
Innovation Solution
A multi-color application method using a plasma coating (PLMC) system to prepare a wear-resistant ceramic layer on aluminum alloy wheels, involving pretreatment, insulating powder coating, multi-color pattern formation, PLMC formation, and transparent powder coating, with controlled curing and electrolyte compositions to enhance corrosion resistance and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If finish turning process with transparent coating is used, then manufacturing simplicity is maintained, but corrosion resistance deteriorates
Solution Approach 1:
The coating system is segmented into multiple functional layers: insulating powder coating layer, multi-color pattern layer, PLMC ceramic layer, and transparent powder coating layer. Each layer serves a specific function (insulation, aesthetics, corrosion resistance, protection), allowing the complex performance requirements to be met through layered structure while maintaining a streamlined production process.
Solution Approach 2:
The invention uses composite material structures including the PLMC (plasma electrolytic oxidation) ceramic layer combined with organic coating layers. The PLMC layer itself is a composite of metal oxide ceramics formed through electrochemical oxidation, providing superior corrosion resistance compared to single-layer coatings.
2Ease of manufacture
If acid and alkali pretreatment is used, then surface preparation is achieved, but environmental impact worsens
Solution Approach 1:
The harmful acid and alkali pretreatment steps are extracted and removed from the process. Instead, a mild alkaline cleaning solution is used for pretreatment, which achieves adequate surface preparation without generating harmful wastewater requiring complex treatment.
Solution Approach 2:
The invention converts the potential harm of chemical pretreatment into benefit by using a controlled mild alkaline environment that not only cleans the surface but also activates it for better coating adhesion, eliminating the need for harsh acids and subsequent complex wastewater treatment.
3Device complexity
If single-color coating is used, then process simplicity is maintained, but design flexibility deteriorates
Solution Approach 1:
The multi-color pattern is created before the final transparent coating is applied. The insulating powder coating is sprayed, cured, and then selectively removed or modified to create the desired multi-color pattern. This preliminary action allows complex aesthetic designs to be achieved before the final protective layer is applied, maintaining process simplicity while enabling design flexibility.
Solution Approach 2:
The invention applies different properties to different regions of the wheel surface. The insulating powder coating is applied uniformly, then selectively removed or modified in specific areas to create multi-color patterns. This local differentiation allows personalized designs while maintaining a standardized overall process.
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 achieves high corrosion and wear resistance, enabling multi-color and personalized patterns while reducing environmental impact through controlled wastewater treatment.
Implementation Method 1
preparing a wear-resistant ceramic layer on a surface of the aluminum alloy wheel by using a plasma coating (PLMC) system
Implementation Method 2
forming a PLMC, wherein an electrolyte is a phosphate-silicate system
Implementation Method 3
the insulating powder coating is cured at a temperature controlled to be 160-200° C. for 10-60 min
Implementation Method 4
the transparent powder is cured at a temperature controlled to be 150-200° C. for 10-80 min
Implementation Method 5
the PLMC is dried for 20-60 min at a temperature controlled to be 120-150° C.
Data Source
AI summary
A multi-color application method and device for an aluminum alloy wheel. The method is used for preparing a wear-resistant ceramic layer on a surface of the aluminum alloy wheel by using a plasma coating (PLMC) system, includes the steps of: pretreating the wheel, spraying an insulating powder coating, curing an insulating powder coating, making a multi-color pattern, cleaning the multi-color pattern, forming a PLMC, performing blocking, performing water washing, drying the PLMC, forming a transparent powder coating, curing a transparent powder coating, forming the PLMC includes preparation of a ceramic film at a multi-color application position, an electrolyte is a phosphate-silicate system, and the PLMC system is provided with: a power supply, a mechanical arm and a plurality of oxidation tanks, the mechanical arm plays a supporting role in wheel transportation and an oxidation process; and the oxidation tanks are used to prepare the PLMC with different colors in the electrolyte.