Electroplating Circumferential Flow Agitation Adhesion
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Solution Overview
Problem
In barrel plating, there is a problem of insufficient cohesion between the electroplated layer and the base member due to an interface between the two, leading to issues like peeling-off and poor adhesion.
Innovation Solution
A method and apparatus for electroplating where base members are agitated to flow in a circumference direction within an electroplating tank, with magnetic media or an agitation unit causing this flow, ensuring they remain submerged and in contact with a bottom cathode, facilitating a continuous decrease in the ratio of metallic elements in the electroplated layer away from the base member, eliminating the clear interface between the base member and the electroplated layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional barrel plating is used, then production efficiency is maintained, but cohesion between electroplated layer and base member is insufficient
Solution Approach 1:
The base members are agitated to flow in a circumference direction within the electroplating tank, creating dynamic movement during electroplating. This dynamic agitation ensures continuous contact between base members and electrolytic solution, eliminating stagnant zones and improving the cohesion between the electroplated layer and base member, thereby resolving the adhesion quality issue while maintaining production efficiency
Solution Approach 2:
The patent changes the physical state and movement parameters of base members during electroplating by introducing circumferential flow through agitation. This parameter change transforms the static barrel plating process into a dynamic flow system, enhancing metal ion deposition uniformity and interfacial cohesion, thus improving both adhesion quality and electroplated layer uniformity
2Productivity
If electroplating is performed with conventional methods, then production time is reduced, but interface separation occurs between base member and electroplated layer
Solution Approach 1:
The agitation system ensures continuous circumferential flow of base members throughout the electroplating process, maintaining constant contact between all base members and the electrolytic solution. This continuous action prevents interface separation by ensuring uniform and uninterrupted metal ion deposition, achieving both rapid electroplating and stable interface composition
Solution Approach 2:
The electrolytic solution acts as an intermediary medium that facilitates continuous metal ion transfer to the base members during agitation. The flowing electrolytic solution ensures uniform distribution of metal ions around moving base members, preventing localized depletion and interface instability, thus enabling fast electroplating without interface separation
3Length of moving object
If conventional electroplating is used, then electroplated layer thickness is reduced, but uniformity of electroplated layer deteriorates
Solution Approach 1:
The circumferential agitation creates dynamic movement of base members through the electrolytic solution, ensuring all surfaces continuously expose to fresh metal ions. This dynamic process achieves uniform metal ion deposition even at reduced thickness, eliminating stagnant zones that cause non-uniformity and enabling precise control of electroplated layer thickness with high uniformity
Solution Approach 2:
By changing the movement parameters of base members from static to flowing state, the patent achieves uniform electroplated layer deposition at reduced thickness. The circumferential flow parameter ensures consistent metal ion supply to all base member surfaces, maintaining manufacturing precision while reducing overall layer thickness and production time
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 approach enhances the cohesion between the electroplated layer and the base member, reducing the likelihood of interface separation and allowing for thinner, more uniform electroplated layers with improved chemical tolerance and reduced production time.
Implementation Method 1
the flow of the multiple of base members (51) along the circumference direction may be caused by a flow of magnetic media (30) along the circumference direction in the electrolytic solution inside of the electroplating tank (10)
Implementation Method 2
a step of electroplating the multiple of base members (51) that is flowing along the circumference direction in the electrolytic solution inside of the electroplating tank (10)
Data Source
Figure 1~2
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Figure 5~6
AI summary
A method for electroplating may include: a step of agitating a multiple of base members (51) that has been immersed in an electrolytic solution inside of an electroplating tank (10) so as to flow in a circumference direction along an inner wall (19) of the electroplating tank (10); and a step of electroplating the multiple of base members (51) that is flowing along the circumference direction in the electrolytic solution inside of the electroplating tank (10). The flow of the multiple of base members (51) along the circumference direction is caused by a flow of magnetic media (30) along the circumference direction in the electrolytic solution inside of the electroplating tank (10) or is caused by rotation of an agitation unit (46) provided at a bottom side of the electroplating tank (10). At least one of the multiple of base members (51) that is flowing along the circumference direction in the electrolytic solution inside of the electroplating tank (10) touches a bottom cathode (21) provided at a bottom side of the electroplating tank (10), and a base member (51) positioned upward relative to said base member (51) touching the bottom cathode (21) is electrically connected to the bottom cathode (21) via at least said base member (51) touching the bottom cathode (21).