Will 4S shops perform internal rust prevention after sheet metal repair?

1 Answers
DeGrace
07/24/25 7:03pm
4S shops will perform internal rust prevention after sheet metal repair. Automotive sheet metal is a technical means of car repair, referring to the restoration of the vehicle body after a collision, which includes all work except for the anti-corrosion and decorative painting of the body. After the sheet metal shaping is completed, because the underlying metal is exposed, it is necessary to apply anti-rust primer. Below are some tips for car rust prevention: 1. Regularly check the humidity in areas prone to water accumulation: It is inevitable for vehicles to encounter rainy or snowy weather or pass through muddy and waterlogged roads during travel. Areas such as the bottom of the body and gaps inside the car can easily accumulate sludge. If the owner does not clean it in time, moisture can hide. Therefore, areas like the inner and outer edges of the wheel hubs, doors, bottom corners of the trunk, keyholes, and moving parts of the wiper arms should be checked frequently. At the same time, ensure that the drainage holes of the doors and various parts of the body are clear, and check the humidity of interior coverings, such as carpets, to prevent rusting of floor components. 2. Apply glaze to soft paint surfaces: For vehicles with softer paint surfaces, sand particles hitting the body during high-speed driving can cause fine scratches. For such cars, applying glaze to the body can form a strong protective mesh film, increasing the hardness of the paint surface, with effects lasting about a year. Coating can also achieve similar results. Additionally, applying undercoating or sealing to the vehicle's underside can protect the chassis from acid rain and corrosion, preventing the original protective layer from cracking or peeling off, and also shielding against small stones hitting the chassis during driving. 3. Avoid using car covers: If a vehicle is parked outdoors and encounters windy or rainy weather, the inner layer of the car cover will repeatedly whip the paint, especially if sand gets blown inside the cover, causing countless fine scratches on the body. Over time, this can dull the paint. Also, after a sandstorm, do not use a duster or cloth to clean the sand particles on the body directly; instead, rinse with water to prevent the sand particles on the duster or cloth from scratching the paint. 4. Handle minor rust spots yourself: For minor scratches or rust spots that have already appeared on the body, if the owner ignores them, they can easily rust, but it may not be worth spending money at a car beauty shop. In such cases, the owner can use some simple methods to handle them personally.
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