![]() The body is dipped into the Electro-Coat Paint Operation (ELPO/E-Coat), then a high voltage is applied. A phosphate coat is necessary to protect the body against corrosion effects and prepares the surface for the E-Coat. Without proper pretreatment, premature failure of the finish system can almost be guaranteed. High-pressure water spray jets are directed to the body. Water-based acrylic polyurethane enamels are now almost universally used as the basecoat with a clearcoat. Enamel paint is better for the environment and replaced lacquer paint in the late 20th century. Up to 85% of Lacquer paint can evaporate into the air, polluting the atmosphere. Environmental laws have prohibited this, which has resulted in a move to water-based paints. Until several decades ago lead, chromium, and other heavy metals were used in automotive paint. Nowadays, two-component (catalyzed) paint is usually applied by robotic arms and cures in just a few hours either at room temperature or in heated booths. As mass production of cars made the process untenable, paint began to be dried in ovens. In the early days of the automobile industry, paint was applied manually and dried for weeks at room temperature because it was a single component paint that dried by solvent evaporation. The clearcoat layer must be able to withstand UV light. Following this, a clearcoat of paint may be applied that forms a glossy and transparent coating. A basecoat is applied after the primer paint is applied. Paint application requires preparation and primer steps to ensure proper application. Modern automobile paint is applied in several layers, with a total thickness of around 100 µm(0.1mm). Water-based acrylic polyurethane enamel paint is currently the most widely used paint for reasons including reducing paint's environmental impact. Coloring and resistance to corrosion of carsĪutomotive paint is paint used on automobiles for both protective and decorative purposes.
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