QC/T 484-1999 "Automotive paints coatings" applies to the mass management of paints coatings for automotive parts, which is divided into 10 groups and different levels. The standard stipulates that the main mass indicators of paints coatings include Appearance, Gloss, Thickness, Impact Strength, Resilience, Hardness, Adhesion, Alkali Resistance, Acid Resistance, Water Resistance, Corrosion Resistance, Gasoline Resistance, Oil Resistance, Weathering Resistance and Temperature Change Resistance. The coating should be kept intact without exposed or bruised, and special attention should be paid to coating protection during the final assembly process. The standard emphasizes the selection of coating codes and grades according to the use conditions and mass requirements of parts, and provides detailed inspection methods to ensure that the coatings meet the requirements.
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