Electrochemical Reaction Control Accessories for Stable Bath Solution and Extended Service Life

Equipment Description:

I. Functional features ‌
‌1. Electrochemical reaction control ‌
In cathode electrophoresis, organic acid ions (such as acetate and formate) are discharged through the anolyte circulation system to maintain the pH value (5.8-6.5) and conductivity (<1000μS/cm) of the bath solution stable.
Prevent metal anode dissolution from contaminating the bath solution and extend the service life of electrophoretic paint.
‌2. Electric field optimization ‌
The tubular design reduces membrane resistance, improves permeability (complex workpiece cavity coverage>95%), and reduces energy consumption.
The inter-electrode spacing is adjustable to meet different workpiece shapes and coating requirements.
‌3. Supporting system ‌
‌Circulation system ‌: Anode liquid circulates independently (flow rate 6-8 times/hour), and the parameters are adjusted with the steam flowmeter and pure water replenishment device.
‌Power supply matching ‌: DC regulated power supply (50-300V), supporting constant voltage/constant current mode switching.

‌II. Maintenance points‌
‌1. Anode liquid management‌
Regularly test the conductivity (<1000μS/cm), check the membrane integrity and add deionized water for dilution when it is turbid.

Replace the anode liquid every quarter to prevent impurities from clogging the membrane pores.

‌2. Equipment cleaning‌
Clean the anode membrane surface (soft brush + pure water) every month to remove attachments and maintain ion permeability.

Check the tightness of the support frame bolts to prevent vibration from causing electrode displacement.

‌3. System monitoring‌
The pH, conductivity and anode liquid flow of the tank liquid are monitored in real time through PLC, and an alarm is triggered when abnormal.

The backwash frequency of the ultrafiltration system is linked to the anode liquid status to extend the life of the membrane assembly.

‌III. Application scenarios‌
‌Automobile manufacturing‌: Cathodic electrophoretic coating of the body and chassis, corrosion resistance is increased by 3-5 times.

‌Metal parts coating‌: Automated production lines for workpieces such as home appliances and building materials, reducing VOC emissions by 80%.

Main structures and components:

‌I. Main structure‌
‌1. Anode cover and support frame‌
‌Material‌: The anode cover is made of rigid polyvinyl chloride (UPVC) or corrosion-resistant plastic (such as PP), and the ion exchange membrane is encapsulated inside; the support frame is a plastic or metal structure used to fix the anode unit.
‌Design features‌: squirrel cage or tubular structure, weighing about 1kg per meter, the spacing can be flexibly adjusted, and it supports side wall, bottom or top installation.
‌2. Electrode body‌
‌Material‌: 304/316L stainless steel or titanium metal tube (diameter 48-51mm, wall thickness ≥3mm), some high-end models use titanium-based oxide electrodes (such as ruthenium oxide coating) to improve corrosion resistance.
‌Internal filling‌: conductive medium (such as deionized water or buffer solution), and the conductivity (500-1000μS/cm) is maintained through a circulation system.
‌3. Anode membrane‌
‌Material‌: semi-permeable ion exchange membrane (styrene-divinylbenzene copolymer), pore size 0.001-0.1μm, selectively allows H⁺ and acid radical ions to pass through, blocking resin particles and pigments.
‌Protective design‌: A canvas protective cover or a hard polyvinyl chloride shell is installed on the outside to prevent mechanical scratches and chemical corrosion.

‌II. Core components‌
‌1. Anode liquid circulation system‌
‌Composition‌: including circulation pump, anode liquid tank, pure water replenishment device and conductivity sensor.
‌Function‌: The anode liquid is circulated by the pump (flow rate 6-8 times/hour), the organic acid produced by the reaction is discharged, and the pH value of the tank liquid is maintained stable (5.8-6.5).
‌2. Power connection component‌
‌Interface material‌: corrosion-resistant copper alloy or titanium metal, connected to a DC power supply (50-300V), supporting constant voltage/constant current mode.
‌Anti-corrosion design‌: The electrode connection is sealed with epoxy resin to prevent electrolyte leakage.

‌III. Functional features‌
‌1. Electric field optimization‌
The tubular structure reduces membrane resistance, improves permeability (complex workpiece cavity coverage>95%), and reduces energy consumption by about 20%.
The inter-electrode spacing is adjustable (usually 10-30cm) to meet the needs of different workpiece shapes and coating processes.
‌2. Anti-pollution design‌
The ion exchange membrane blocks resin particles from entering the anode area to avoid paint contamination and electrode passivation.
The independent anolyte circulation system reduces impurity deposition and extends the service life of the electrophoretic paint to 3-5 years.

‌IV. Accessories‌
‌Protective cover‌: Canvas or UPVC material, used to wrap the anode membrane to prevent physical damage.
‌Monitoring device‌: The conductivity sensor, flow meter and PLC are linked to provide real-time feedback on the status of the anode liquid and trigger an alarm.

Features:

1.High cost performance: Based on the customer's product positioning and development strategy, and with economic affordability as the foundation, we achieve the best cost performance.
2.The advanced and meticulous design concept of the equipment, along with the highly automated industrial equipment, showcases the image of a modern and advanced enterprise.
3. It has high adaptability, meeting the current production requirements and reserving room for development, taking into account the needs of increased production and improved quality in the future.
4.Quality compliance strictly adheres to the ISO900 quality management system, with every minute detail of the entire equipment installation being strictly controlled.