Reasons for Cast Iron Platform Deformation and Prevention: 3 Daily Maintenance Tips to Extend Platform Accuracy Life As the "reference surface" in industrial production, the accuracy stability of cast iron platforms directly affects equipment assembly, inspection, and processing quality. However, during long-term use, due to environmental changes, improper operation, or lack of maintenance, the platform is prone to slight deformation, leading to large flatness errors and reduced contact points, which can even affect production accuracy in severe cases. This article will deeply analyze the common causes of deformation in cast iron platforms and summarize 5 daily maintenance tips to help companies extend platform accuracy life and reduce maintenance costs. I. Three Core Causes of Cast Iron Platform Deformation Environmental stress is the primary factor causing platform deformation. Drastic temperature changes (daily temperature difference ≥ 10°C) cause thermal expansion and contraction in cast iron. If the platform is exposed to direct sunlight or air conditioning vents for extended periods, local temperature differences can exceed 15°C, increasing flatness error by 0.01–0.03 mm/m per month. Excessive humidity (relative humidity > 70%) can cause rust on cast iron, and the expansion force of the rust layer can damage surface accuracy, especially at untreated joints where rust depth can reach 0.1–0.3 mm per year. Lack of maintenance accelerates accuracy degradation. Unremoved iron chips and coolant can seep into microscopic cracks on the platform surface, causing a "freeze-thaw cycle" effect during temperature changes, leading to crack propagation. Using hard tools (such as steel brushes) for cleaning may cause scratches of 0.005–0.01 mm, damaging contact point distribution and indirectly accelerating deformation. II. 5 Daily Maintenance Tips: From Protection to Calibration Tip 1: Environmental Control and Area Isolation Install cast iron platforms in temperature and humidity-controlled areas, maintaining a temperature of (20 ± 2)°C and relative humidity of 40%–60%, avoiding direct sunlight or air conditioning drafts. Set up isolation barriers around the platform to prevent unauthorized personnel from approaching, and place shock-absorbing pads (5–10 mm thick) on the floor to reduce vibration transmission from nearby equipment (vibration acceleration ≤ 0.1g). For platforms used outdoors, install rain shelters with daily temperature fluctuations controlled within ±5°C. Tip 2: Load Management and Even Force Distribution Strictly adhere to the platform’s rated load capacity, ensuring that the weight of objects placed does not exceed 80% of the rated value, and that objects are aligned with the platform. For large workpieces, use auxiliary supports (such as jacks) to distribute the load, keeping the force per unit area ≤ 500 kg/m2. When placing equipment, adopt a three-point support method (support points arranged in an equilateral triangle) to avoid excessive single-point stress. The contact area between the support surface and the platform should be ≥ 70% of the equipment base area. Tip 3: Cleaning and Rust Prevention After daily operations, wipe the platform surface to remove iron chips, oil stains, and other impurities, paying special attention to cleaning debris from T-slots (using specialized slot brushes). Perform deep maintenance weekly: gently polish the surface with fine abrasive paste (grit W10) to remove oxidation layers, then apply a thin layer of rust preventive oil (viscosity 20–30 cSt) to form a protective film. For platforms left idle for extended periods, cover them with moisture-proof film and place desiccants (50g silica gel desiccant per square meter of platform), replacing the desiccant monthly. The accuracy life of cast iron platforms depends not only on manufacturing processes but also on scientific daily maintenance. By controlling environmental variables, standardizing load operations, enhancing cleaning and maintenance, regularly calibrating accuracy, and promptly repairing damage, the platform’s accuracy retention period can be extended by over 50%, significantly reducing production losses caused by reference surface failure. In the era of smart manufacturing, prioritizing the maintenance and management of cast iron platforms is fundamental to ensuring stable production quality and a hidden advantage in enhancing corporate competitiveness. Ms. Xie, Qili Machine Tool, 13785751790