Abstract
The study objective is to reduce the corrosive effect on the bearing frame of a passenger car.
 The problem to which the paper is devoted is to study corrosion processes arising in the supporting members of a passenger car and their reduction during the life cycle of the car.
 Research methods: statistical analysis, metallographic study, experimental staining of a passenger car.
 The novelty of the work: to improve the technology of staining and cleaning of supporting members, definition of corrosion wear processes of the passenger car bearing frame that arise during operation.
 Study results: reduction of the environment impact on the car centre sill, complete cleaning of the centre sill from previous paint coating, slightly different strength characteristics of the metal during shot blast / mechanical cleaning, acceleration of preparing the centre sill for painting, paint coating elasticity. 
 Conclusions: the developed technology is applicable in passenger car depots, as well as at car repair plants during capital repairs without significant investment and operational costs.
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