Powder Coating Troubleshooting: Poor Edge Coverage

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last updated：Sep 13, 2023

川口化成品

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Reconsidering the painting method! We also introduce measures related to the shape of the object being painted!

We will introduce troubleshooting for the phenomenon of "poor adhesion," which is characterized by low coating efficiency on the workpiece or a gradual decline in efficiency. If the cause is related to voltage or grounding issues, measures can be taken by checking the applied voltage, ensuring proper grounding of the workpiece, and removing accumulated insulating materials from the conveyor and hanger. Additionally, when using a recovery system, one of the causes can be that the particle size of the powder gradually decreases with each recovery, and there are countermeasures for this as well. [Causes and Countermeasures (Excerpt)] ■ Due to the shape of the workpiece → For workpieces with complex shapes, reconsider the painting method. ■ Due to issues with the paint itself → Consult with the manufacturer to consider improvements in the workability and charge characteristics of the paint. *For more details, please refer to the PDF document or feel free to contact us.

Related Link - https://www.funtai-toryo.com/troubleshooting_12.ht…

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【Other Causes and Countermeasures】 ■ Due to issues with voltage or grounding → Check the applied voltage and ensure proper grounding of the coated object → Lowering the applied voltage can improve the wrapping around recesses → Remove accumulated insulating material from the conveyor and hangers ■ When using a recovery device, the particle size of the powder gradually decreases with each recovery → Continuously replenish the recovery tank with new powder to maintain a consistent ratio of new powder to recovered powder ■ Humidity is too low → Manage humidity according to the correct specifications of the equipment used (40-60% RH) *For more details, please refer to the PDF document or feel free to contact us.