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| Typical Local Environmental Monitoring and Anti-corrosion Countermeasures in Damp and Hot Salt Spray Atmospheric Environment |
| Received:July 14, 2020 Revised:August 28, 2020 |
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| DOI：10.7643/issn.1672-9242.2021.02.017 |
| KeyWord:damp and hot salt spray marine atmosphere local environment anti-corrosion |
| Author | Institution |
| WANG Hong-lun |
Unit 63790, PLA, Haikou , China |
| ZHANG Dong-jiu |
Unit 63790, PLA, Haikou , China |
| WANG Jun |
China National Electric Apparatus Research Institute Co., Ltd., Guangzhou , China |
| ZHANG Bang-shuang |
Unit 63790, PLA, Haikou , China |
| TU Qi-yong |
Unit 63790, PLA, Haikou , China |
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| Abstract: |
| To obtain the data of different local environments in the marine atmospheric environment with high damp and heat and high salt spray through monitoring, and put forward anticorrosion countermeasures appropriately for different materials, structures and components, this paper carries out the monitoring of temperature, humidity and salt spray sedimentation rate as well as corrosion tests of high-precision test pieces and standard test pieces. The trend of monitoring parameters under different working environments in damp and hot salt spray marine atmospheric environment within one year is analyzed. And the corrosivity of different periods under different local working environments is studied to carry out environmental assessment and classification. The research shows that the atmospheric corrosion level of a coastal area in Hainan has reached the severest level (CX or GX) according to two test methods, which are high temperature, high humidity and high salt spray all year round. The indoor hall and machine room environment are also high temperature and humidity for a long time. Sea salt particles can be obviously detected. The high-precision test piece has corrosion phenomenon, but it is at least one grade different from the harsh outdoor environment. The level of environmental corrosion in the indoor electromechanical control cabinet is generally G1 with relatively high temperature and relatively low humidity. So protection schemes can be formulated according to the anti-corrosion requirements of different use environments, which can not only meet the requirements of long-term anti-corrosion and stable operation of equipment, but avoid over-protection to reasonably and effectively utilize resources and save costs. |
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