Hairline Processing Wheel for Home Appliance Surface
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Solution Overview
Problem
Conventional home appliances with chrome plating and hairline processing suffer from reduced productivity, increased material costs, and visibility issues with fingerprints due to the need for multiple plating processes and high color differences in fingerprint visibility and wipeability.
Innovation Solution
A manufacturing method for home appliances involving a copper plating layer, nickel plating layer, and chromium plating layer, with hairline processing using a tilted wheel to form a transverse hairline and applying a coating layer using acrylic, fluorine, or silane-based paints, eliminating the need for separate plating after hairline processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If primary chromium plating, hairline processing, and secondary chromium plating are performed sequentially, then the home appliance surface achieves desired appearance and protection, but productivity is lowered and material cost is increased
Solution Approach 1:
The patent combines primary chromium plating, hairline processing, and secondary chromium plating into a single integrated process. The hairline processing wheel performs both the hairline texture creation and secondary plating function simultaneously, eliminating the need for separate plating steps and reducing manufacturing complexity
Solution Approach 2:
The hairline processing wheel is designed to perform multiple functions: creating the hairline texture on the chromium surface and simultaneously applying the secondary plating layer. This multi-functional approach consolidates multiple manufacturing operations into one device, improving productivity while maintaining surface quality
2Shape
If conventional chrome plating and coating are applied to show luxury and cleanliness, then the home appliance appearance is improved, but fingerprints become prominent over time damaging the sense of luxury
Solution Approach 1:
The patent creates local quality variation on the chromium surface through hairline processing, which produces fine linear textures that scatter light and mask fingerprint marks. The uneven surface topology at the micro-scale provides different optical properties that reduce the visibility of fingerprint residues while maintaining overall surface aesthetics
Solution Approach 2:
The hairline processing is performed on the chromium plating before final coating application, pre-establishing a surface structure that resists fingerprint visibility. This preliminary texturing creates a surface that inherently masks fingerprints, reducing the need for frequent cleaning and maintenance
3Reliability
If multiple plating processes are performed to achieve desired surface properties, then corrosion resistance is improved, but material cost and manufacturing complexity are increased
Solution Approach 1:
The patent merges the secondary plating process with the hairline processing operation. The hairline processing wheel simultaneously creates the textured surface and deposits the secondary plating layer, combining two previously separate manufacturing steps into one integrated process, thereby reducing device complexity while maintaining dual functionality
Solution Approach 2:
The patent creates a composite surface structure consisting of chromium plating with integrated hairline texture and secondary plating layer. This composite structure achieves enhanced corrosion resistance by combining multiple material layers and surface treatments in a single integrated manufacturing process, reducing the need for separate 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
This method enhances corrosion resistance and anti-fingerprint properties, improving the appearance and durability of home appliances by reducing fingerprint visibility and enhancing wipeability while maintaining luxury and cleanliness aesthetics.
Implementation Method 1
forming a copper plating layer by plating copper (Cu) on the base material
Implementation Method 2
forming a nickel plating layer by plating nickel (Ni) on the copper plating layer
Implementation Method 3
forming a chromium plating layer by plating chromium (Cr) on the nickel plating layer
Implementation Method 4
processing the transverse hairline on the upper surface of the plating layer by tilting the hairline processing wheel at a predetermined angle
Implementation Method 5
forming a coating layer on the hairline. The coating layer may be coated using one of acrylic, fluorine, and silane-based paints
Data Source
AI summary
A manufacturing method of a home appliance including a hairline according to disclosed embodiment includes forming at least one plating layer on the base material, processing the transverse hairline on the upper surface of the plating layer by tilting the hairline processing wheel at a predetermined angle, and forming a coating layer on the hairline.