Powder Coating Troubleshooting: Defects

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last updated：Sep 13, 2023

川口化成品

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We will also introduce measures related to painting over metal powder and debris attached to the coated surface!

We will introduce troubleshooting for the phenomenon known as "buts," which involves small protrusions that rise on the coating film. If the cause is a blockage in the circulation path (such as the paint hose), it is possible to take measures by preventing the accumulation of powder, heat, humidity, and excess pressure in the paint hose from the recovery tank to the powder coating gun. Additionally, there are measures for cases where aggregated paint forms clumps that fly onto the workpiece and are baked on as is. [Causes and Measures (Excerpt)] ■ Blockage occurred in the circulation path (such as the paint hose) → Prevent accumulation of powder, heat, humidity, and excess pressure in the paint hose from the recovery tank to the powder coating gun. ■ Aggregated paint formed clumps that flew onto the workpiece and were baked on as is → Remove the powder coating from the box, loosen it while still in the inner bag, and then set it in the painting machine. → Use the "IPD Micronized Powder Coating Control System." *For more details, please refer to the PDF document or feel free to contact us.

Related Link - https://www.funtai-toryo.com/troubleshooting_04.ht…

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【Other Causes and Countermeasures】 ■Painting over metal powder or dust on the substrate → Thoroughly clean and blow off the substrate before painting → Thoroughly clean the painting booth and surrounding areas ■Poor curing due to blocking or gelation of old powder coatings, resulting in paint that did not dissolve completely and formed clumps → Adhere to the expiration dates set by the paint manufacturer → Use a sieve or similar equipment to remove clumped powder *For more details, please refer to the PDF document or feel free to contact us.