When I took it out of the oven, the plate was warped. I will explain how to suppress thermal deformation caused by the difference in heating and cooling speeds.
After taking it out of the furnace, the flat plate was warped. This is not a painting issue, but a problem with how the heat was applied. ────────────── ■Cause of Occurrence Metals expand when heated and contract when cooled. If there is a temperature difference on the front and back or between different areas of the plate, the difference in contraction leads to warping. ■Truth Thin plates with a thickness of 1.0mm or less can warp even with a temperature difference of 10 degrees. Residual stress introduced during pressing or welding is released all at once when heated. If there is a temperature difference between the entrance and exit sides of the furnace, the difference between areas is amplified. ■Improvement Measures Gradually increase the temperature and cool down slowly to avoid rapid cooling. For parts that are prone to warping, bake them while restrained with reinforcing jigs. Please utilize the materials summarizing the baking conditions for thin plate components.
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Compatible materials: Iron, stainless steel, aluminum / Compatible plate thickness: 0.6mm or more / Baking temperature: 140-200 degrees / Deformation countermeasures: Fixture manufacturing, gradual heating, slow cooling / Maximum compatible dimensions: 2000mm
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Metal powder coating for parts that dislike deformation, such as thin plate metal covers, electrical panel doors, furniture tops, and OA equipment enclosures. We have a track record of reviewing restraint jigs and heating conditions as a countermeasure against warping complaints.
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We are not just a "subcontracted painting factory." Established in 1958, our company has a foundation of painting technology and also specializes in chemical treatment, stripping, and cleaning, functioning as the "external surface treatment department" in your organizational chart. Based on our philosophy of "preparation is eight-tenths of the work," we emphasize participation from the "upstream process" before the drawings are finalized. We conduct test painting on a wide range of metals and difficult materials, and we produce the entire process from assembly, packaging, to delivery, thereby reducing your management workload. Additionally, by being able to perform zinc phosphate treatment in-house, we achieve stable painting quality. Furthermore, our micro-heating stripping technology, which does not use chemicals, maintains the electrical state of the "jigs (hangers)" that influence painting quality. Our approach of "pre-treatment determines painting quality" ensures the stability of the paint film during mass production. Rather than simply "applying specified standards," we work backwards to achieve optimal painting specifications and prevent scratches during transportation, sparing no effort in thorough discussions from the outset. This diligent preparation is the shortest path to preventing rework and minimizing total costs. From the development stage, please utilize the expertise of our specialists as part of your production line.
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