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随着车辆使用年限或行使里程的增长,各部位机件的腐蚀逐渐加剧,常见腐蚀比较严重的部位是板金件部分,如驾驶室、车大箱、客车壳体、车底板、挡泥板等。这些部位常与泥沙、碎石和水接触,如车轮飞溅碎石、泥沙撞击汽车表面的防护层,极易划伤漆层,破坏其完整性、连续性,使金属裸露在外,当接触到水和空气中的氧,就会起化学作用而产生锈蚀。
With the increase of service life or exercise mileage, the corrosion of mechanical parts in all parts is gradually aggravated. Parts where corrosion is more common are plate parts such as cab, car trunk, bus shell, car floor, fender, etc. . These parts are often in contact with sediment, gravel and water, such as wheel splash gravel, sand hit the protective layer of the car surface, easily scratch the paint, undermining its integrity, continuity, the metal exposed, when exposed To water and oxygen in the air, it will play a chemical role and produce rust.