Does Unmanned Car Washing Damage Car Paint?
1 Answers
Currently, unmanned car washing does not cause damage to car paint. Common vehicle scratches and their causes: Spiral marks, accurately referred to as sun swirls, are fine spiral-like patterns visible under sunlight, while rainbow-like patterns are known as glare marks. Using unclean cloths to vigorously wipe the car can also leave such marks. Sand is the main culprit behind scratches. Whether washing manually with a cloth or using an automatic car wash machine, directly wiping the car body with a cloth can trap dirt in the fabric, leading to scratches when rubbed against the surface. Safety of brushes in automatic car wash machines: The brushes in automatic car wash machines are made of soft foam material. Taking a certain automatic car wash machine as an example, it uses imported EVA foam brushes with very low material density, capable of filtering fine particles above PM2.0. The brush ends are forked with an inverted trapezoid structure, soft and smooth, preventing sand from being trapped and ensuring no harm to the car paint. Safe cleaning methods: After pre-washing, the brushes are activated. During the washing process, the program monitors the safe current value to ensure the brush's pressure on the car body, preventing high-friction surface contact. Due to the centrifugal force from rotation, sand cannot adhere to the brush surface. Under the influence of inertial centrifugal force, sand is flung away from the brush surface in the opposite direction of the car body. High-pressure water nozzles continuously spray water onto the brushes, thoroughly cleaning them with each rotation, making it impossible for sand and dirt to damage the car body. Effective drying methods: Water droplets left after washing can easily form convex lenses, reflecting sunlight and causing localized high temperatures that may burn the car paint or leave watermarks. Therefore, a certain automatic car wash machine is equipped with an intelligent drying mode. After cleaning, the profile lifting top wind and fixed side wind drying system automatically adjusts the wind curtain direction, speed, and pressure based on model parameters obtained from the cleaning brush pressure sensor system, ensuring the high-intensity, high-airflow super wind curtain achieves optimal drying. Safety of car wash liquids: Some alkaline car wash solutions, such as dish soap or even 84 disinfectant, may clean the car effectively at the time but can accumulate over time, corroding the painted surface and leading to dullness or cracks. The neutral imported car wash liquid used can effectively prevent car paint from being damaged by excessive acid or alkali during washing. Shining water wax: After the weak water wash is completed, the automatic car wash machine automatically sprays shining water wax, which repels water, enhances the car's surface brightness, and provides short-term (3-5 days) protection for the car paint. Not only does it not damage the car paint, but maintenance is also something the automatic car wash machine quietly performs.
