A1: Reasonable equipment layout: The layout of the equipment should take into account production efficiency and working space to ensure smooth operation and reduce unnecessary waste

A2: Equipment stability and reliability: The selected equipment must be stable, reliable, and able to operate continuously for a long time to reduce failures and maintenance time.

A3: Compliance with safety regulations: The design, manufacture and installation of equipment should comply with relevant national standards and safety regulations to ensure the safety of operators.
A4: Easy to maintain and service: The maintenance and service of the equipment should be simple and easy, with clear operating procedures and maintenance requirements to ensure the long-term stable operation of the equipment.

A5: Coating quality: The equipment should be able to provide high-quality coating effects, including coating uniformity, adhesion, corrosion resistance and other requirements.】

A6: Environmental protection: Electrophoretic coating equipment should meet environmental protection requirements, reduce the discharge of wastewater, waste gas and other pollutants, and reduce the impact on the environment

A7:Adaptability: The equipment should have a certain degree of adaptability to meet the requirements of different products and different processes and improve production flexibility.

A8: These requirements together constitute the basic framework of electrophoretic coating equipment, providing guidance for the selection, use and maintenance of equipment. In practical applications, appropriate adjustments and optimizations should also be made according to specific products, processes and production environments.

A1: Poor surface treatment of workpiece: If there are impurities such as grease, rust, scale, etc. on the surface of the workpiece, it will affect the penetration of the paint. Solution: Improve the quality of pretreatment to ensure that the surface of the workpiece is clean and pollution-free.

A2：Electrophoresis tank parameters: Inappropriate parameters such as conductivity, temperature, and pH value may reduce electrophoresis permeability. Solution: Adjust the tank parameters to the recommended values ​​and keep them stable.‘’

A3：Electrophoresis time: Insufficient coating time may lead to poor penetration. Solution: Increase the electrophoresis time appropriately, but be careful not to over-long the time, which may lead to excessively thick paint film.

A4：Tank liquid viscosity: Too high viscosity will prevent the paint liquid from entering the pores. Solution: Adjust the paint formula to control the appropriate viscosity.

A5：Bath formula: Certain additives may affect the penetration of the paint solution. Solution: Check the bath formula, it may be necessary to add a penetration enhancer or adjust the ratio.

A6：Electric field strength: Too low an electric field strength may result in insufficient electrophoresis. Solution: Ensure that the electric field strength of the electrophoresis equipment is within the appropriate range.

A7：Tank liquid circulation: Poor circulation may cause the paint liquid to be unevenly distributed, affecting the penetration. Solution: Optimize the tank liquid circulation system to ensure the fluidity of the tank liquid.

A8：Pore ​​structure: The pore structure of the workpiece is complex and the permeability is poor. Solution: Choose a suitable paint type, such as cathodic electrophoretic paint with good permeability.

A1：Control bath liquid parameters: Ensure that the pH value, temperature, conductivity and other parameters of the bath liquid are within the appropriate range to avoid water droplets caused by improper bath liquid conditions.

A2：Optimize electrophoresis equipment: Check the cleanliness of electrophoresis equipment such as the tank, conductive tank, anode and cathode to prevent impurities from entering and causing water droplets.
A3: Adjust the process flow: Appropriately adjust the electrophoresis time, voltage and current to ensure uniform deposition of the paint film.
A4: Post-treatment: For water drop marks that have already occurred, special treatment agents can be used for neutralization or polishing, but this may increase costs and production complexity.

A5: Train operators: Improve the technical level of operators to ensure they can operate the equipment correctly and detect and handle problems in a timely manner.

A1: Add a heating device to ensure that the electrophoresis tank liquid is within the process index requirements (generally controlled at 25-30 degrees).

A2: Increase the electroplating voltage and adjust the voltage appropriately according to the size and quantity of the workpieces.

A3: Ensure the electrophoresis time.

A4: Add appropriate amount of organic solvent to make its content meet the process requirements.

A5: Carry out regular or timely maintenance on the hanger to ensure good power supply.

A6: Check the anode steel plate (tube), regularly check, clean or replace with new anode steel plate (tube)

A7: Check the anolyte system to ensure there is no leakage; and add appropriate amount of new paint to adjust the pH value of the tank liquid.

A8: Add new paint to increase the solid content, and replenish the paint every day according to the production volume to avoid excessive fluctuations in the tank liquid parameters.

A1: Adjust the pre-degreasing, degreasing temperature and degreasing agent concentration to keep the tank liquid clean.

A2: Strengthen the cleaning of phosphating slag after phosphating to ensure that the coated workpieces and hangers are clean.

A3: Check and replace filter bags regularly to strengthen filtration.

A4: Regularly test the co-solvent content according to technical requirements and keep the co-solvent content within the control range

A5: Improve the ultrafiltration spraying effect and avoid excessive paint on the workpiece.

A6: Strengthen the cleaning after electrophoresis to ensure that the workpiece is fully cleaned.

A1: Adjust the solvent evaporation rate: By selecting a solvent with an appropriate evaporation rate, or adding a certain amount of slow-evaporating solvent, the redissolution phenomenon caused by excessive evaporation of the solvent can be effectively reduced.

A2: Optimize resin particle size: By screening resin particles and controlling particle size distribution, the coating can have good suspension stability and reduce the possibility of re-dissolution.

A3: Reasonably design the coating formula: According to actual needs, select appropriate resins, solvents, pigments and other raw materials, and mix them in reasonable proportions to improve the stability and anti-solvent properties of the coating.

A4: Improve the construction environment: ensure that the temperature, humidity, ventilation and other conditions in the construction environment meet the requirements to avoid the redissolution of the paint due to environmental factors.

A5: Standardize paint storage: Electrophoretic paint should be stored in sealed containers and placed in a ventilated, dry, light-proof environment, avoiding high temperature, low temperature and high humidity to ensure the quality of the paint.

A1: Optimize the electrophoretic coating formula: select high-purity raw materials and strictly control the production process to ensure the quality of the electrophoretic coating. At the same time, some additives, such as dispersants and wetting agents, can be added to improve the dispersibility and stability of the electrophoretic coating.

A2: Strengthen the surface treatment of workpieces: Use appropriate cleaning agents to thoroughly clean the oil, rust, oxide scale and other pollutants on the surface of the workpiece. If necessary, mechanical treatment methods such as sandblasting and shot blasting can be used to improve the roughness of the workpiece surface and increase the adhesion of the coating.

A3：Adjust electrophoresis conditions: According to the material and shape of the workpiece, select appropriate electrophoresis voltage, time, temperature and other parameters to ensure that the electrophoresis coating can be evenly deposited on the surface of the workpiece. At the same time, regularly check the operating status of the electrophoresis equipment to ensure that it is working properly.

A4: Improve post-processing technology: During the curing process, the curing temperature and time must be strictly controlled to ensure that the paint film can be completely cured. If necessary, a multi-stage curing process can be used to improve the density and corrosion resistance of the paint film. In addition, mechanical polishing and other methods can be used to remove particles on the surface of the paint film and improve the appearance quality of the product.

A5: Strengthen production environment control: Keep the production environment clean and dry to prevent dust, impurities and other pollutants from entering the electrophoretic coating. Clean and maintain production equipment regularly to ensure that it works properly.

A1：Choose high-quality electrophoretic coatings: Choose high-quality electrophoretic coatings that have been strictly tested and verified to ensure that the coatings do not contain impurities, particulate matter, gel substances, etc. that affect stability.

A2: Optimize equipment design: According to the characteristics of the coating and process requirements, optimize the design of the electrophoretic coating equipment, including structure, material, heating system, etc., to ensure stable operation of the equipment and reduce the generation of water droplets.

A3：Reasonable setting of process parameters: According to the characteristics of the coating and operating conditions, reasonable setting of coating process parameters, such as voltage, current, temperature, solvent content, etc., to ensure good film-forming effect of the coating and reduce the generation of water droplets.

A4：Control the operating environment: strictly control the temperature, humidity, air flow and other conditions of the coating environment to ensure good coating film formation and reduce the generation of water droplets. At the same time, keep the equipment clean and hygienic to avoid dust, impurities and other contamination of the coating.

A5: Regular maintenance and inspection: Regularly inspect and maintain the electrophoretic coating equipment to ensure that the equipment operates normally and reduce water droplet problems caused by equipment failure.

A1: Increase the voltage: Increasing the voltage during electrophoretic coating can enhance the electric field force, promote the migration of the coating to the surface of the workpiece, and increase the thickness of the coating. Generally, the voltage can be adjusted between 50-90V.

A2：Increase the number of electrophoresis: By increasing the number of electrophoresis, multiple depositions can be achieved, thereby increasing the coating thickness. However, it should be noted that increasing the number of electrophoresis will also lead to increased energy consumption and costs, so it is necessary to make a choice based on actual conditions.

A3: Control the bath temperature: The bath temperature has an important influence on the fluidity and deposition effect of the coating. In actual operation, the bath temperature should be controlled within the range of 20-30°C to ensure that the coating has a good deposition effect.