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    Home > Coatings News > Paints and Coatings Market > Principle of defect solution before coating

    Principle of defect solution before coating

    • Last Update: 2020-03-04
    • Source: Internet
    • Author: User
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    The following principles should be followed to solve the defects of coating pretreatment: ① make clear whether it is equipment problem or chemical problem The judgment method is to replace the equipment with the same pretreatment agent before coating This makes it easy to identify the problem ② Find out the process and general scope of defects If it is proved that the defect occurs in the pretreatment agent before coating, then try to determine the process that produces the defect ③ Distinguish between degreasing and phosphating This is very important for judging the generation of defects ④ Keep complete and accurate original records to prevent similar faults from recurring ⑤ Deal with defects one by one  
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