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崇明岛地处长江口,三面环江,一面临海,常受咸潮影响,水闸钢闸门易受腐蚀。1955年庙港开始建造第一座水闸以来,全岛相继建成水闸25座,至今水闸钢闸门总面积已达8400平方米。这些闸门过去都采用人工除锈,油漆防腐。这些办法劳动强度大,费用高,而防腐蚀效果差,防腐蚀寿命短。北部水闸每年需保养一次,南部水闸也需隔年保养一次。因此,传统的防腐蚀工艺,在水闸钢闸门上越来越不相适应了。钢闸门在水中发生锈蚀的内在原因是钢材本身含有一定的杂质,外部原因是水质和
Chongming Island is located in the mouth of the Yangtze River, surrounded by the river on three sides, facing the sea, often affected by the saltwater surge, sluice gate vulnerable to corrosion. Since Miaogang started construction of the first sluice in 1955, 25 sluice gates have been built in the whole island. So far, the total sluice gate has reached 8,400 square meters. These gates in the past are used artificial rust, paint anti-corrosion. These methods labor-intensive, high cost, and poor anti-corrosion effect, short anti-corrosion life. The northern sluice needs to be serviced once a year and the southern sluice needs to be serviced every other year. Therefore, the traditional anti-corrosion process, the gate in the sluice steel more and more incompatible. Steel gate rust in water is the inherent reason that the steel itself contains some impurities, the external cause is water and