What causes unevenness in the insulating coating? Thickness at the corners and in the depths.
I want a uniform and well-adhering insulating film, but the corners and recessed areas become thin. This explains the causes of thickness variation that lead to weaknesses in insulation and offers tips on application methods.
I want to apply an insulating coating to electrical components, but the thickness varies by location. The corners and the depths of holes are thin, and I’m worried whether the insulation will be sufficient. 【First, please look here】 □ The coating on corners and edges is thin → Paint tends to escape from corners, resulting in a thinner coating. □ The depths of dents and holes are thin → With electrostatic spraying, it becomes difficult for the paint to reach the depths. □ The thickness on flat surfaces also varies → The hanging method and spraying direction are not consistent. 【Why this is a problem】 The performance of the insulation is determined by the thinnest area. Even if the flat surfaces have sufficient thickness, if the corners are thin, that becomes a weak point. 【Countermeasures you can take starting today】 1. Always include corners and depths when measuring coating thickness. 2. Chamfer the corners to create a shape that allows the paint to adhere better. 3. Decide on the hanging method and direction, and verify the distribution of coating thickness with prototypes. 【Free materials】 We have compiled the details of our oven curing and powder coating services in the related catalog "Oven Curing Service." You can download it for free from this page.
basic information
Theme: Variation in the thickness of the insulating coating. Management items: Measurement of thickness at corners and depths, corner chamfering, hanging method and orientation, confirmation of thickness distribution in prototypes.
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Applications/Examples of results
Insulation coating for metal parts and cases of motors, distribution boards, and electrical equipment. Consideration of insulation specifications by the design department and quality assurance personnel, and requests for prototypes.
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