Auto Collision Repair and Refinishing 2025 – 400 Free Practice Questions to Pass the Exam

The function of electrode position primer is primarily related to its ability to create a strong bondwith the metal surface of the vehicle. This type of primer is applied using an electrostatic process, where the primer has an electrical charge opposite that of the vehicle frame. This opposite charge causes the primer to attract to the metal surfaces during the application process, leading to a more uniform coverage and better adhesion.

The electrical charge plays a critical role in ensuring that the primer effectively coats intricate shapes and areas that might be difficult to reach with conventional spraying methods. This results in enhanced corrosion resistance and improved overall durability of the paint system, thereby contributing to the longevity of the vehicle's finish.

In terms of other functions, while preventing rust is indeed a valuable quality of some primers, the unique feature of electrode position primer lies specifically in its electrical charge mechanism, which is essential for achieving optimal adhesion and coverage on metal surfaces.