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.
It was reported that there were nail marks at the delivery destination. It may not be due to the hardness of the paint, but rather a possibility of insufficient curing. ────────────── ■ Cause of Occurrence Insufficient hardness indicates that the cross-linking reaction of the resin has not been completed. Curing time is counted from when the part itself reaches the specified temperature, not from when the set temperature is reached. ■ Truth Even if the furnace is set to 180 degrees for 20 minutes, thick parts take 10 minutes to reach the required temperature. The actual curing time is only 10 minutes, resulting in insufficient hardening. ■ Improvement Measures Attach a thermocouple to the product and manage the holding time after the required temperature is reached. Separate batches for products with significant thickness differences. Please utilize the documentation for temperature management and curing time settings.
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basic information
Baking conditions: Managed by holding time after reaching the temperature / Thermocouple measurement: Conducted on the first product of the lot / Pencil hardness: H or higher / Applicable thickness: From thin plates to castings.
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Applications/Examples of results
Machine parts with frequently touched control panels/movable components / delivered items with pencil hardness standards.
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Company information
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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