在山东地区，电缆桥架因气候潮湿、盐雾腐蚀及工业环境复杂等因素，易出现锈蚀问题，影响设备与使用寿命。针对这一行业痛点，需从材料选型、施工工艺、日常维护三方面构建系统性解决方案。

　　In Shandong region, cable trays are prone to rusting due to factors such as humid climate, salt spray corrosion, and complex industrial environment, which affects equipment safety and service life. To address the pain points in this industry, a systematic solution needs to be constructed from three aspects: material selection, construction technology, and daily maintenance.

　　耐蚀材料选型：源头降低锈蚀风险

　　Corrosion resistant material selection: reducing the risk of corrosion at the source

　　在材质选择上，热镀锌桥架因其锌铁合金层具备优异耐蚀性，成为山东沿海及化工区域的，其锌层厚度达65μm以上，中性盐雾试验可耐受1000小时。对于强腐蚀环境，可采用316L不锈钢桥架，其铬镍钼合金成分使点蚀电位提升300mV以上，较普通304不锈钢耐蚀性提升3倍。铝合金桥架则凭借表面氧化膜（厚度5-25μm）实现轻量化防腐，尤其适用于干燥室内环境。

　　In terms of material selection, hot-dip galvanized cable trays have become the preferred choice for coastal and chemical areas in Shandong due to their excellent corrosion resistance of zinc iron alloy layer. The zinc layer thickness is over 65 μ m, and the neutral salt spray test can withstand 1000 hours. For highly corrosive environments, 316L stainless steel cable trays can be used, whose chromium nickel molybdenum alloy composition increases the pitting potential to over 300mV, which is three times more corrosion-resistant than ordinary 304 stainless steel. Aluminum alloy cable trays are lightweight and corrosion-resistant with a surface oxide film (thickness 5-25 μ m), especially suitable for dry indoor environments.

　　表面处理工艺：构建防护屏障

　　Surface treatment process: Building protective barriers

　　防腐涂层施工需严格把控工艺参数。环氧富锌底漆涂装时，环境湿度需控制在80%以下，膜厚≥75μm，固化7天后进行电火花检测，确保无针孔缺陷。对于已锈蚀表面，需采用动力工具除锈St3级，处理后4小时内完成底漆涂装。在青岛某石化项目实践中，采用无机硅酸锌车间底漆的桥架，经5年户外使用，锈蚀面积仍低于1%。

　　The construction of anti-corrosion coatings requires strict control of process parameters. When applying epoxy zinc rich primer, the environmental humidity should be controlled below 80%, the film thickness should be ≥ 75 μ m, and after curing for 7 days, electrical discharge testing should be carried out to ensure no pinhole defects. For corroded surfaces, power tools should be used to remove rust to St3 level, and primer coating should be completed within 4 hours after treatment. In the practice of a petrochemical project in Qingdao, the bridge frame coated with inorganic zinc silicate workshop primer still had a corrosion area of less than 1% after 5 years of outdoor use.

　　锈蚀处理技术：精准修复方案

　　Corrosion treatment technology: precise repair solution

　　轻度锈蚀可采用机械除锈法，使用旋转钢丝刷配合真空吸尘装置，在浮锈的同时避免粉尘污染。对于点蚀坑洞，需用电动砂轮打磨Fe3O4层，再填充环氧腻子找平。某电厂案例显示，经此处理后焊缝区耐盐雾性能提升4倍。化学除锈则适用精密部件，5%柠檬酸溶液浸泡10分钟后，配合超声波清洗，可彻底去除微孔锈蚀。

　　Mild rust can be removed by mechanical rust removal method, using a rotating wire brush combined with a vacuum cleaner to remove floating rust while avoiding dust pollution. For pitting pits, it is necessary to use an electric grinding wheel to polish them to the Fe3O4 layer, and then fill them with epoxy putty for leveling. A case study of a power plant shows that after this treatment, the salt spray resistance of the weld zone is improved by four times. Chemical rust removal is suitable for precision components. After soaking in a 5% citric acid solution for 10 minutes, combined with ultrasonic cleaning, micro pore rust can be completely removed.

　　结构加固策略：延长服役周期

　　Structural reinforcement strategy: extending service life

　　当桥架挠度超过L/200时，需实施加固。粘钢加固法采用JGN建筑结构胶，在腹板两侧粘贴3mm厚Q345钢板，承载力提升幅度达60%。对于变形严重段，可采用碳纤维布加固，双向缠绕后抗弯刚度增加1.8倍。济南某数据中心实践表明，加固后桥架通过100kg荷载测试，变形量控制在5mm以内。

　　When the deflection of the bridge exceeds L/200, reinforcement is required. The steel bonding reinforcement method adopts JGN building structural adhesive, and 3mm thick Q345 steel plates are pasted on both sides of the web plate, with a 60% increase in bearing capacity. For severely deformed sections, carbon fiber cloth reinforcement can be used, and the bending stiffness increases by 1.8 times after bi-directional winding. Practice in a data center in Jinan has shown that after reinforcement, the bridge frame can withstand a 100kg load test and the deformation is controlled within 5mm.

　　智能维护体系：预防锈蚀复发

　　Intelligent maintenance system: preventing rust recurrence

　　部署物联网监测系统，通过温湿度传感器与腐蚀速率探头建立预警模型。当Cl⁻浓度超0.02mol/L或相对湿度＞75%时，自动启动机与微正压装置。在烟台港项目应用中，该系统使人工巡检频次降低70%，锈蚀发现周期缩短15天。日常维护需遵循“三步清洁法”：先用工业吸尘器积灰，再用异丙醇擦拭油污，涂刷薄层防锈蜡，形成物理阻隔层。

　　Deploy an IoT monitoring system and establish an early warning model through temperature and humidity sensors and corrosion rate probes. When the Cl⁻ Concentration exceeds 0.02mol/L or the relative humidity is greater than 75%, the dehumidifier and micro positive pressure device will automatically start. In the application of the Yantai Port project, the system reduced the frequency of manual inspections by 70% and shortened the rust detection cycle to 15 days. Daily maintenance should follow the "three-step cleaning method": first use an industrial vacuum cleaner to remove accumulated dust, then wipe off oil stains with isopropanol, and finally apply a thin layer of anti rust wax to form a physical barrier layer.

　　山东地区电缆桥架的锈蚀治理需贯彻“材料升级-工艺优化-智能维护”全周期管理理念。通过科学选材、规范施工、精准修复与数字监控，可显著延长桥架使用寿命，降低全生命周期成本，为电力设施运行提供坚实保障。

　　The corrosion control of cable trays in Shandong region needs to implement the full cycle management concept of "material upgrade process optimization intelligent maintenance". Through scientific material selection, standardized construction, precise repair, and digital monitoring, the service life of cable trays can be significantly extended, the full lifecycle cost can be reduced, and solid guarantees can be provided for the safe operation of power facilities.

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