Coil stock finds its utility in crafting items such as gutters and flashings, typically on-site. Skilled tradesmen can tailor-make various components from it, the paint used remains flexible even when the material is bent or shaped. On the contrary, powder coating tends to crack under such manipulation. Powder coating, although offering superior quality, comes at a higher cost, and aligns with the premium quality of aluminum extrusion. In contrast, the more economical thin gauge coil is a better match for wet paint, which is generally cheaper.
While both powder coated aluminum and coil coated aluminum offer exceptional durability and corrosion resistance, their suitability in specific applications varies. Factors such as budget, design requirements, and environmental conditions can play a part in the decision-making process. Understanding the unique properties and advantages of each material is essential for making informed decisions and achieving optimal results in construction, manufacturing, and design projects. Whether you opt for the versatility of powder coated aluminum or the robustness of the coil coat process both materials can deliver superior performance.
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Coil coating is an automated, continuous process used to efficiently coat coils of aluminum before it is cut and formed and so providing a tightly bonded surface finish.
The aluminum coil is delivered from the rolling mills to the beginning of the line, then unwound at a constant speed. It passes through a series of pre-treatment and coating processes, and is then recoiled. Coils can be added and removed at either end of the line, allowing a continuous process.
The metal is uncoiled, then cleaned and brushed before undergoing chemical surface treatment. Next, it is dried, primed, cured and coated. Each of these steps may potentially introduce surface defects which will be difficult to detect once the strip is cooled and recoiled.
Because of the speed and continuous nature of the process, it is essential to have a real-time, automated inspection system. The ability to &#;virtually rewind&#; the coil through video playback is ideal for defect assessment and quality checks.
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