Anticorrosive coating method for electric locomotive

Abstract

The invention provides an anticorrosive coating method for an electric locomotive. The method comprises the steps that mechanical pretreatment is performed to the whole surface of the locomotive, and the outer surface of a locomotive body, the outer surface of a cab, the surface of a base frame and the surface of a reversing frame are coated with a heavy anticorrosive coatingprimer; the inner surfaces of the cab and the locomotive body are coated with a heavy anticorrosive coating bottom surface unityprimer; the bottom surface unity primer on the inner surface of the cab is coated with a heavy anticorrosive coating flame retardant and sound insulation paint; primers on the surfaces of the base frame and the reversing frame are coated with a heavy anticorrosive coatingfinish paint; primers on the surfaces of thelocomotive body and the cab are coated with a heavy anticorrosive coatingintermediate paint; intermediate paints on the outer surfaces of the locomotive body and the cab are coated with a heavy anticorrosive coatingfinish paint. The locomotive coated with the method can operate for a long time in a severe corrosive environment, the discharge amount of a service environment volatile organic compound is lower, the coating application property is good, the construction time can be greatly shortened, the production efficiency is improved, the construction cost is reduced, and the paints are not prone to strip.

Description

technical field [0001] The invention relates to an electric locomotive anticorrosion technology, in particular to an anticorrosion coating method for an electric locomotive. Background technique [0002] Railway heavy-duty freight electric locomotives are mainly used for coal transportation. Due to the long transportation lines of the locomotives and the harsh and harsh operating environment, they have to withstand changes in the intensity of sunlight in extreme high and low temperature environments for a long time, frequent impacts of sandstorms, and severe vibrations caused by high-speed locomotive operation. , the erosion of sulfur dioxide pollutants in industrial cities, and the operation in complex environments with frequent changes in dry and wet air with salinity and frequent erosion. The corrosion of railway locomotives is an important factor affecting the transportation and service life of locomotives. This requires that the anti-corrosion coatings and coating proc...

AI Technical Summary

Problems solved by technology

The existing anticorrosion process of electric locomotives is as follows: firstly, chemical pretreatment is carried out on the outer surface and inner surface of the car body, and then the inner surface and outer surface are sprayed with primer, bituminous paint and topcoat in sequence. The surface adhesion of the material is small, and the coating is easy to fall off. The top paint on the roof and side walls cannot adapt to high temperature and strong ultraviolet light, and it is prone to problems such as roof bleeding and partial peeling off of the outer skin paint. Due to the operation of the chassis and bogies The environment is humid and the paint is easily damaged due to frequent car brushing. In addition, the asphalt paint inside the car dries slowly and releases toxic gas, which cannot meet environmental protection requirements.

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