What is the function of the front bumper of a car?
The front and rear ends of the car are equipped with bumpers. They not only have a decorative function, but more importantly, they are safety devices that absorb and mitigate external impacts, protecting the vehicle body and ensuring the safety of the passengers.
The bumper serves functions such as providing safety protection, decorating the vehicle, and improving the aerodynamic characteristics of the vehicle. From a safety perspective, when a car experiences a low-speed collision accident, it can act as a buffer to protect the front and rear car bodies; in an accident with pedestrians, it can play a certain role in protecting pedestrians. From an appearance perspective, it is decorative and becomes an important component for decorating the exterior of the car; at the same time, the car bumper also has certain aerodynamic effects.
Meanwhile, in order to reduce the harm to passengers in the event of a side collision accident, car doors usually have door bumpers installed on the car to enhance the impact resistance of the car doors. This method is practical, simple, and has little change to the vehicle structure, and has been widely promoted and used. As early as 1993 at the Shenzhen International Auto Exhibition, the Honda Accord exhibited a part of one of the car doors, exposing the door bumper for the audience to see, to show its excellent safety performance.
Installing door bumpers means placing several high-strength steel beams horizontally or diagonally inside each car door panel, serving as the front and rear bumpers of the car, ensuring that there are bumper "guards" on all sides of the entire car, forming a "steel and iron wall", providing a maximum safety area for the car occupants. Of course, installing such door bumpers for car manufacturers will undoubtedly increase some costs, but for car passengers, safety and security will be greatly enhanced. The method for repairing plastic scratches on the front bumper of the car depends on the degree of damage. From minor polishing to professional painting or replacement, there are various options.
Choose the repair method based on the degree of damage
Minor surface scratches (not exposing the primer): Can be repaired using polishing wax or toothpaste. First, wipe the scratched area with a cleaner, then apply car polishing wax or toothpaste, gently rub with a soft cloth until the scratch is reduced, and finally polish.
Deeper scratches (exposing the primer): It is recommended to use a touch-up paint pen or professional painting. After cleaning and sanding the damaged area, apply the matching original car paint touch-up pen along the scratch direction evenly, or perform painting repair (including primer, topcoat and clear coat), dry and polish.
Dents or deformations (not cracked): Can be restored through heat repair or with professional tools. Use a heat gun to partially heat the plastic to soften it, gently push to restore the shape, then apply paint to cover; or go to a 4S store to use suction cups and other tools for non-destructive dented repair.
Severe damage (cracking or large area paint peeling): Replacement of the bumper or plastic welding is required. When the damage is severe, replacing the new bumper is the most direct solution; if repair is possible, professional technicians will use plastic welding, filling, grinding and painting steps.
Other handling methods and suggestions
Temporary covering: For small scratches, a similar color car sticker can be used for covering, simple and economical but may affect appearance.
Insurance claim: If the vehicle is insured for vehicle damage and the damage meets the compensation standards, report to the insurance company to cover the repair costs.
Prior DIY or seeking professional help: Minor damage can be attempted to repair at a low cost; for complex situations (such as dents, deformations, and damage), it is recommended to go to a 4S store or repair shop to ensure the effect and safety.
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