Electrolysis Mandrel Conductivity Sensing for In-Situ Coating Control
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Solution Overview
Problem
Existing technologies lack the ability to measure variations in electrical conductivity, coating thickness, and topographic profile during surface metallization processes, making it difficult to optimize process parameters in real time.
Innovation Solution
A measuring system comprising a mandrel, probes, a computer, and a chamber that allows for real-time conductivity and thickness measurements, along with a detector for reflected light analysis, enabling in-situ optimization of the metallization process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If surface metallization process is performed without real-time measurement, then the process can be completed, but the coating efficiency and process parameters cannot be optimized during the process
Solution Approach 1:
The patent implements real-time feedback by measuring electrical conductivity during the surface metallization process using probe sets connected to voltmeters and amperemeters. The computer processes these measurements to calculate conductivity values and provides feedback to operators, enabling them to optimize coating efficiency and adjust process parameters during the coating process rather than waiting for completion.
2Measurement precision
If multiple measurement devices are added to monitor conductivity and thickness, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The patent employs probe sets that serve multiple functions: they measure both voltage and current simultaneously, enabling calculation of electrical conductivity. The same probe structure is used for both voltage measurement (via voltmeter connection) and current measurement (via amperemeter connection), reducing the need for separate measurement devices and simplifying the overall system while maintaining comprehensive measurement precision.
3Measurement precision
If probes are placed in direct contact with the liquid electrolyte, then conductivity measurement is possible, but measurement accuracy is compromised due to liquid interference
Solution Approach 1:
The patent introduces an insulating material as an intermediary substance that coats the probes. This insulating coating allows the probes to be placed in the liquid electrolyte without direct contact between the metal probe and the liquid, preventing unwanted electrical interference and chemical reactions. The insulating material acts as a mediator that enables accurate conductivity measurement of the coating on the mandrel while blocking interference from the electrolyte liquid.
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
Enables real-time monitoring and optimization of coating efficiency and process parameters by measuring conductivity, thickness, and topography during surface metallization, allowing for improved process control without waiting for completion.
Implementation Method 1
Electrolysis is the process of the dissociation of dissolved chemical compounds in a liquid by means of an electric current. The electrolysis process is carried out in a container called an electrolysis container or electrolysis tank.
Implementation Method 2
The potential difference (electric field) that generates when the electrodes are connected to a current source moves the ions toward the oppositely charged electrode (pole). While positively (+) charged ions migrate to the cathode, negatively (−) charged ions flow towards the anode.
Implementation Method 3
measuring the resistance of the isolated layer by a four-point probe or by Van der Pauw. The sheet resistance in the test area is measured in-situ.
Data Source
AI summary
A measuring system is disclosed which includes an electrolysis container, at least one mandrel contained in the electrolysis container and on which a coating is made by surface metallization, a liquid contained in the electrolysis container and containing a solution enabling the conductivity of the mandrel to be increased, more than one probe on the mandrel, enabling the conductivity of the mandrel to be measured, at least one first probe set enabling current to be transmitted onto the mandrel and allowing the current passing on it to be measured by means of an amperemeter located thereon, at least one second probe set enabling the voltage difference to be measured by a voltmeter.