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What causes the smell of paint to linger? Management of residual solvents.
Although it feels dry to the touch, the solvent smell doesn't go away. I will explain the management points to detect internal moisture that hasn't dried.
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What causes white stains to remain after drying? Measures against water stains.
White ring stains left after cleaning. This explains how to prevent them before painting by managing water quality and drying time.
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What causes the coating to be scratched by nails? Insufficient hardness and burn-in.
The paint film is scratched by nails after delivery. The cause lies not in the performance of the paint, but in the curing temperature and time.
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What causes bleeding at the masking edge? Basics of application.
The bleeding and burrs at the edges are not due to the quality of the tape. They are determined by how it is applied and when it is removed.
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What are the causes of scratches on the painted surface? Three points: transportation and fixtures.
Scratches occur not during the painting process, but during transportation and with fixtures. I will explain three measures that include packaging.
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What causes the substrate to be transparent? Poor concealment and film thickness design.
The transparency of red and yellow is not solely due to the lack of hiding power in the paint. We will reconsider the undercoating design and film thickness.
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What causes variations in film thickness? Three basic points for measurement and management.
Variations in film thickness are not due to differences in skill. This explanation will cover management methods that reconsider measurement points, jigs, and positions within the furnace.
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What causes paint film to crack? Three conditions to prevent cracking.
The paint film cracks due to bending and temperature changes. Thickening and over-baking take away flexibility. It can be prevented by optimizing film thickness and baking conditions.
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What is the reason for the inability to coat recesses in powder coating? The barrier of static electricity.
Only the inner sides of the box and the bottoms of the deep ribs do not have a film thickness. I will explain the Faraday cage phenomenon that prevents static electricity from entering and the countermeasures.
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What causes the peeling of layered paint? The three barriers to interlayer adhesion.
The base is fine, but only the repaired layer is peeling off. The hardened paint film does not adhere. Surface preparation and time management will be the turning point.
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What are the causes of color mismatch? Three basics of color difference management in painting.
The color does not match the previous lot and adjacent parts. The cause is the film thickness and baking temperature. I will explain a method to manage this with numerical values instead of visual inspection.
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What causes paint to turn white? Humidity management to prevent whitening.
White discoloration that occurs frequently during the rainy season and summer. It is a phenomenon where the paint surface cools and condenses due to the evaporation of the solvent. It can be prevented by selecting the right thinner and managing humidity.
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What causes marks to remain on the paint? Three methods to prevent fixture marks when hanging.
Hanger marks, gripping marks, exposed substrate. By specifying the contact position of the jig and managing conductivity, appearance defects and rework labor can be significantly reduced.
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What causes the corners to rust first? The pitfalls of edge film thickness.
The flat surface has no issues, but the corners are rusting. The film thickness at the edges drops to less than half of that on the flat surface. We will improve this by requesting a chamfer and adding measurement points.
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What causes bubbles in the coating? Drying management to prevent defects.
Countless small bubbles that appear after firing. The occurrence of pits caused by trapped solvent can be prevented by adjusting the setting time and heating rate.
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What causes a rough painted surface? Three basics to prevent citrus peel skin.
Yuzu skin undulates like the peel of a mandarin orange. Smoothness is stabilized by three conditions: viscosity, film thickness, and gun distance, along with seasonal thinner selection.
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What causes paint to repel? Three key points not to overlook regarding repelling defects.
A paint defect that causes a round dent due to paint escaping. The root cause is not degreasing, but the oil content in the airline. This explains the key points of pretreatment and equipment management.
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Thickness of the film and substrate management to prevent chipping of stainless steel.
Chipping caused by flying stones and other factors. This explains measures against insufficient film thickness and poor adhesion.
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Why does poor curing occur in stainless steel coatings? Basics of baking conditions.
The painted surface is sticky due to insufficient curing. The cause is a lack of control over the baking temperature and time.
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Chemical treatment and film thickness management to prevent the recurrence of rust on stainless steel.
Even stainless steel, which is supposed to be rust-resistant, can develop rust again. This explains measures against rust transfer and insufficient film thickness.
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Why does uneven gloss occur in stainless steel paint? Reviewing drying conditions.
Variations in gloss that appear different in certain areas. This is caused by fluctuations in drying temperature and wind speed.
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Three on-site checks to prevent foreign matter contamination in stainless steel.
Defects on the painted surface directly lead to complaints. We will explain the key points of on-site management to prevent foreign matter contamination.
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Key points for temperature and film thickness management to prevent color unevenness in stainless steel.
Color unevenness that appears different despite being the same paint. It is caused by variations in temperature distribution and film thickness.
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Why does stainless steel coating run? The relationship between viscosity and film thickness.
The defect is not necessarily due to the operator's mistake. We will explain the points for reviewing viscosity management and film thickness settings.
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Why do stainless steel blisters occur? Basics of moisture management.
Blistering of the coating is caused by moisture and oil. We will explain the specific precautions and measures for stainless steel.
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Three pre-treatment checks to prevent peeling of stainless steel paint.
Stainless steel's passive film hinders adhesion. Here are three checkpoints for pre-treatment to prevent peeling.
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The measures against pinholes in stainless steel start with a review of degreasing and drying.
The pinholes in stainless steel coating are caused by insufficient degreasing and drying. I will explain the key points for reviewing the pretreatment process.
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Quality control measures for metal baked coatings during the summer.
I have summarized the issues that are likely to occur from the rainy season to summer and the management system for them.
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The reason blisters increase in summer is due to moisture and temperature.
Even if the products are in good condition at the time of shipment, blisters are likely to appear a few weeks later during the summer. This explains the causes and countermeasures.
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Storage of materials before painting is suffering from condensation in summer.
The materials left before painting are rusting due to condensation. This explains the storage troubles unique to summer.
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