Car manufacturers use radiation for which task? A) Sealing Windows B) Drying paint C) Cleaning tires D) Lubricating engines THE CORRECT ANSWER IS B. #edge2021
The Correct Answer and Explanation is:
Correct Answer: B) Drying paint
Car manufacturers use radiation primarily for the drying and curing of paint on vehicles. This process plays a crucial role in ensuring a smooth, durable, and high-quality finish on the surface of the car.
When a car is painted, the liquid paint contains solvents and resins that need to solidify into a hard coating. Traditional drying methods rely on convection ovens that blow hot air over the painted surface, which can be time-consuming and energy-intensive. In contrast, radiation—especially infrared (IR) and ultraviolet (UV) radiation—offers a faster and more efficient method of drying.
Infrared radiation works by penetrating the paint layer and heating it from within. This allows the solvents in the paint to evaporate quickly, reducing drying time significantly. Infrared drying is especially useful for large painted surfaces like car bodies because it ensures even drying and minimizes the risk of dust particles settling on the surface during the process.
Ultraviolet radiation, on the other hand, is often used with specially formulated UV-curable paints. These paints contain photoinitiators that react to UV light, causing the paint to cure almost instantly when exposed. UV curing is particularly advantageous for components such as headlights, trim parts, or even touch-up operations, where precision and speed are essential.
Using radiation for drying paint not only improves production speed but also enhances the quality and consistency of the finish. It helps car manufacturers reduce energy consumption, cut down on emissions, and maintain high throughput in assembly lines.
The other options are incorrect:
- Sealing windows does not involve radiation
- Cleaning tires typically uses water and detergents
- Lubricating engines is done with oils and greases, not radiation
