We are introducing measures to address issues such as the residue of oils and other substances on the surface of coated items caused by poor degreasing!
This is a phenomenon where small holes appear on the surface of the paint film, resembling pinpricks, known as "pinholes (foaming)." We will introduce troubleshooting for this issue. When the substrate has voids, such as in castings, zinc-plated materials, or aluminum die casts, foaming from porous substrates can be addressed by pre-baking the substrate or applying a solvent or powder primer before painting. Additionally, there are measures for issues caused by the adhesion of foreign substances such as rust and dirt, or the residual oil on the substrate surface due to inadequate degreasing. 【Causes and Measures (Excerpt)】 ■ Due to the adhesion of foreign substances such as rust and dirt → Thoroughly remove foreign substances ■ Due to the incorporation of air within the paint film → Check the temperature rise curve and slow down the temperature increase as much as possible ■ Due to residual oil on the substrate surface from inadequate degreasing → Strictly manage the concentration, temperature, spray pressure, and processing time of the degreasing agent *For more details, please refer to the PDF document or feel free to contact us.
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【Other Causes and Countermeasures】 ■Presence of voids in materials such as cast iron, zinc-plated materials, and aluminum die-cast Due to foaming from porous substrates → Preheat the substrate or apply a solvent or powder primer ■Contamination by different types of paint → Thoroughly clean the booth and supply circulation system during color change ■Excessive film thickness applied → Adhere to the recommended film thickness by the paint manufacturer ■The paint reacted before application → Confirm with the manufacturer that the storage conditions and expiration date of the paint have not been exceeded ■The temperature of the curing oven is too high → Lower the internal temperature of the oven or reduce the time inside the oven *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Our company has been engaged in the sale of industrial paints for over 100 years since its founding, and we also sell related products such as painting materials and equipment. Additionally, we offer consultations on the entire industrial painting process, from the design to the installation of painting equipment, as well as installation work for painting facilities. Please feel free to contact us if you have any requests.