Metal Panel

Splash guards installed in industrial equipment operate under constant mechanical vibration and fluid impact—an environment that subjects the protective coating to cyclic stresses far exceeding what decorative coatings can withstand. When the powder coating on custom splash guards peels off, the consequences go beyond mere cosmetic issues; the exposed substrate can lead to localized corrosion, which may shorten the component’s service life and increase subsequent maintenance costs. From a manufacturing engineering perspective, adhesion failure of the powder coating on splash guards is almost never a problem with the coating material itself. The root cause can be traced back to the production floor: residual drawing lubricants or cutting fluids form a low-surface-energy barrier between the substrate and the coating; meanwhile, scale on laser-cut edges cannot be fully penetrated by conventional phosphating pretreatment. These defects manifest as “false adhesion”: the coating adheres to a layer of oxide or contaminants rather than to the base metal itself; once subjected to vibration or fluid […]