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Precautions for anti-corrosion, rust removal, and painting of pump machinery. As key equipment in industrial production, pumps operate in complex environments for extended periods, making them susceptible to corrosion, which directly affects their lifespan and production safety. Anti-corrosion, rust removal, and coating tasks must be carried out in strict accordance with scientific standards to ensure precise operations at each stage, thereby providing a reliable protective barrier for pumps. I. Rigorous surface treatment: the foundation of everything. Rust removal is essential for anti-corrosion coating; it is necessary to achieve the Sa2.5 level specified by the national standard GB8923 (sandblasting) or the St3 level (rust removal using power tools). Grade Sa2.5 requires the complete removal of oxide scale, rust, and adhering substances, so that the metal surface exhibits a uniform metallic luster, with a roughness level controlled between 40-70μm ； For grade St3, it is necessary to remove all visible rust by using a rotating wire brush or grinder. After rust removal, it is essential to apply the primer within 2 hours to prevent secondary rusting and ensure a seamless transition between surface treatment and painting. II. Precise coating process: Building up protection layer by layer. 1. Scientific material selection and mixing: Use epoxy zinc-rich primers with high corrosion resistance, epoxy intermediate coats, and polyurethane topcoats; add curing agents and thinners strictly according to the manufacturer’s specifications, avoiding any arbitrary adjustments. 2. Staged construction and quality control: For indoor equipment, the application involves \"one base coat and two top coats\", while for outdoor applications it is \"two base coats and two top coats\". At least 4 hours should pass between each coating application to ensure proper curing. During painting, the ambient temperature should be maintained between 5-35°C and the humidity should be ≤85%; work should be avoided in rainy or foggy weather. The coating thickness is measured using a thickness gauge: the primer layer is 50–80 μm thick, while the total thickness is ≥120 μm, to prevent sagging and incomplete coating. 3. Comprehensive protection and recording: Uncoated areas (threads, sealing surfaces, nameplates, etc.) are protected by covering them with tape. The final topcoat color must comply with the company’s standards (such as blue RAL5015), and photographic records of each processing step shall be kept for inspection and traceability purposes. III. Long-term maintenance and risk control: Emphasis on both safety and environmental protection 1. Regular maintenance and inspection: Establish a coating inspection system, with comprehensive checks every 3–5 years; in harsh environments (coastal areas, chemical industrial zones), the interval should be reduced. Fix any damage promptly to prevent the spread of corrosion. 2. Safety and environmental protection measures: Wear protective equipment such as dust masks and goggles during operations, use environmentally friendly paints with low pollution levels, and reduce the emission of volatile organic compounds. Idle pumps should be disassembled, oiled, and stored; water accumulation should be drained in winter to prevent freezing and cracking. 3. Risk management and emergency response: Assess risks prior to construction and develop emergency plans. For work at heights, safety ropes and platforms should be provided, and the lockout/tagout procedure must be strictly followed to prevent accidental startup. Anti-corrosion coating for mechanical pumps is not something that can be achieved in a short time; it requires adherence to standards while taking into account both efficiency and safety. Only by combining scientific construction with long-term maintenance can a \"protective armor\" be created for the equipment, thereby extending its service life and ensuring continuous and stable operation. Only by respecting regulations and operating with precision can pumps withstand harsh conditions and ensure the smooth flow of industrial processes. In summary, the anti-corrosion, rust removal, and painting of mechanical pumps must strictly adhere to surface treatment standards such as GB8923, ensuring that painting is carried out promptly after rust removal is completed to meet the required standards. Select appropriate corrosion-resistant materials, carry out construction in layers, and pay attention to protecting areas that are not to be painted. At the same time, regular maintenance and risk control are given equal importance to ensure operational safety and environmental protection. Through these measures, the service life of pumps can be effectively extended, ensuring their safe and stable operation.