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通过对涂料性能的改进及对车桥总成难涂漆部位和装配缝隙部位进行防锈工艺优化，在现有生产条件及涂装工艺不做大改动的前提下，使商用车车桥表面涂层耐盐雾性能从120h提高到300h以上。“,”Commercial vehicle axle surface coating salt-fog resistance increased from 120 h to300 h was achieved in existing production condition and coating process of without any change under the premise, only by optimization of the coating performance and improvement of antirust technology of the axle assembly place where it difficult to paint and assembly gap site.