What is the function of a bumper?

1 Answers
AndrewFitz
07/30/25 7:48am
The functions of a bumper are: 1. Safety protection; 2. Absorbing external impacts; 3. Protecting pedestrians; 4. Decorative purpose; 5. Improving vehicle aerodynamics. A bumper consists of an outer panel, cushioning material, and a crossbeam. The outer panel and cushioning material are made of plastic, while the crossbeam is formed from cold-rolled sheet metal pressed into a U-shaped channel. The outer panel and cushioning material are attached to the crossbeam, which is then connected to the vehicle frame rails with screws. The bumper painting process includes: 1. Cleaning the bumper; 2. Drying; 3. Surface spraying; 4. Sanding and wiping; 5. Flame treatment; 6. Electrostatic dust removal; 7. Spraying operation; 8. Applying gray primer; 9. Spraying pre-mixed color paint, followed by clear coat, then baking and polishing.
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