How long will it take for exposed primer to rust?
2 Answers
Exposed primer will generally rust in about 3-5 months. Below is an introduction to automotive painting: 1. Introduction: Automotive painting refers to applying a layer of paint to the car's surface to protect it. Automotive painting typically uses baked paint. In automobile manufacturing plants, after the frame and body are welded, the next step is painting. 2. Types: The forms include standard paint, metallic paint, and pearl paint. The automotive painting process includes: applying putty, sanding, and painting. Automotive paints include: standard paint; metallic paint; pearl paint; clear coat; matte paint. 3. Composition: The composition of automotive paint. Automotive paint generally has four basic components: film-forming substances (resins), pigments (including extender pigments), solvents, and additives.
As a car owner who drives year-round in a humid coastal city, I believe the speed of rust formation after the primer is exposed mainly depends on the weather and location. If it's during the rainy season or in areas with high salt content near the sea, rust spots can appear as quickly as two to three weeks after the metal is exposed, because moisture and pollutants in these environments accelerate oxidation. On the other hand, in dry inland areas or when parked in a garage, it might take months for rust to start forming. I remember last month when my car got a small scratch, I didn't deal with it promptly, and after a few rains, it rusted quickly, forcing me to go to a repair shop for painting and filling. If maintenance is neglected, rust can spread from the edges and damage the overall body structure. So, once you notice a scratch, immediately use rust inhibitor or nail polish for temporary protection and get professional paint repair as soon as possible.
