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    • Study on white-point defects of phosphate film for cold-rolled plate treatment before coating.

      Time of Update: 2020-10-24
      Through the status quo investigation can be known: the pre-treatment line equipment and tank fluid parameters are normal (only the free alkali of the degreasing fluid and the upper limit of the temperature bias management benchmark), phosphate film white dots are concentrated in the body cold rolling plate, wherein the phosphated membrane white dot defects from the white body into the pre-treatment to the degreasing water wash before this process began to produce.

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