In order to improve the efficiency of water resource utilization and achieve the goal of energy conservation and consumption reduction,a feasibility study was conducted on the reuse of reclaimed water and reverse water replenishment in the pre-treatment of aluminum alloy wheels.The water supply pipeline was optimized and the conductivity of the washing tank and the degree of bacterial contamination in the final washing process were strictly monitored.The film properties(adhesion,hardness,chipping resistance,CASS,salt spray resistance,filiform corrosion resistance,water resistance,moisture resistance,and cleaning agent resistance)are investigated.The results indicate that the water reuse and reverse water replenishment process in the pre-treatment of painting are stable,the conductivity of the washing tank and the bacterial content in the final washing meet the requirements of the pre-treatment process,and the coatings film performance is qualified.
关键词
铝合金轮毂/节能降耗/中水回用/逆向补水/含菌量/涂膜性能
Key words
aluminum alloy wheel/energy conservation and consumption reduction/reuse of reclaimed water/reverse water replenishment/bacterial content/coatings film performance