Discuss the causes of defects in the application of inorganic zinc-rich primers

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1. Factors related to coating materials: Inorganic zinc-rich primers are composed of various raw materials such as film-forming substances, solvents, and additives; these components complement each other in terms of performance. However, defects may occur due to various factors, such as improper storage conditions or prolonged storage periods. Another example includes unreasonable formula design, inappropriate selection of raw materials, and problems with the manufacturing process. 2. Painting process factors: When the factors related to inorganic zinc-rich primers and the substrate can be controlled and eliminated, defects usually arise from unreasonable painting design or inadequate implementation. The painting process here includes the specific steps involved in painting, the methods used with various tools, and especially whether processes such as drying and sanding are carried out properly. 3. Painting environment factors: Painting steel requires a suitable environment; for example, insufficient lighting in the workshop leads to uneven spraying, and problems that could have been detected promptly go unnoticed. The humidity in the spraying and drying area is not under control, ventilation is inadequate, or the wind speed is unsuitable, which makes it difficult for solvents to evaporate and results in paint mist being released into the air. 4. Coating technology factors: Inorganic zinc-rich primers are applied by operators, while the coating process is designed and managed by technical personnel. If the quality of these engineering and technical staff is poor, it becomes difficult to ensure the proper progress of the coating process and to avoid defects; the various problems mentioned above need to be resolved through human factors.