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批量生产的客车车体是用5、10Kn、15Kn等低碳钢制成的。为了预防锈蚀,车体内表面上底漆后涂沥青玛(王帝)脂,车体外表面打底子后上腻子,并涂以醇酸瓷漆。经验证明,当规定使用寿命为28年时,每使用8—12年后,在车体端部的地板及侧壁下翼缘会出现穿透性腐蚀损坏。之后,车体中部立柱下端、横梁等部位也会出现类似的腐蚀损坏。为了恢复车体的承载能力,消
The mass production of passenger car body is made of low carbon steel such as 5, 10Kn, 15Kn. In order to prevent rusting, the body surface primer primer coated asphalt Ma (king emperor) fat, car body surface after the sub-putty, and coated with alkyd enamel. Experience has shown that when the specified service life is 28 years, penetrating corrosion damage occurs at the floor and the lower flange of the side wall at the end of the car body after every 8 to 12 years of use. After that, the lower part of the central column, the beam and other parts of the body will appear similar to the corrosion damage. In order to restore the carrying capacity of the body, eliminate