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热熔浸稀土铝——海洋与船舶
Hot-Dipped Rare Earth Aluminum -- Maritime & Ship Industry


海水是含盐浓度非常高的电解溶液,是一种腐蚀性很强的天然腐蚀剂,目前海洋用钢除改变钢体本身的化学元素成分外,主要是采取涂刷油漆的方法,二是梱挂锌或铝阳极片的方法,以起到牺牲阳极,保护阴极的作用。我公司的钢基热熔浸稀土铝技术比以上两种方法有着更加优异的防腐性和经济性,为此,我公司开发了热熔浸稀土铝钢板桩和钢管桩,以及浸铝调质钢管新产品,可满足耐海水腐蚀的同时,其力学性能都能达到或超过海底输油气钢管的标准要求。

根据试验检测数据表明,在海水全浸区的使用环境中,热熔浸铝钢管耐蚀性能是碳钢的30倍,铝黄铜的6.7倍,铜镍合金的2.7倍,热浸镀锌的9.4倍。用我公司的浸铝技术,我们开发了整体热熔浸铝换热器,应用到船用柴油机系统,在海水和硫化氢的介质工况下,它的耐蚀性能优于316L不锈钢,但导热系数是316L不锈钢的1倍。

自2002年,我公司给中国渤船重工(代号431)建造的三条船上生产加工了浸铝管件开始,先后给中国远洋,上海熔盛重工,舟山船厂等企业生产了数百吨船用管件,取得了很好的使用效果。


Sea water has high salt concentration. It is very high electrolytic solution and is a highly corrosive in nature. Currently, the Maritime steel product besides changes of its chemical composition, the key process is to apply paint coating method. Secondly, it is to install Zinc or Aluminum as anode protection through sacrificial corrosion of the metal to protect the steel structure. Yin Ma steel-based Hot-dipped Aluminum process is more superior than the above two methods with excellent corrosion resistance and economic value.

The Company has applied Hot-Dipped Rare Earth Aluminum on steel plate and Steel Piling Pipe, also, developed Hot-Dipped Aluminum new steel pipe products. These can meet the Anti-corrosive needs in Maritime environment and its Mechanical strength also reach or over pass the standard of Maritime Oil & Gas piping requirement.

According to the experimental test data, it shows that the use of environmental seawater immersion, the Hot-Dipped Aluminum corrosion resistance factor is 30 times of the carbon steel, 6.7 times of Aluminum-Brass, 2.7 times that of copper-nickel alloy, 9.4 times of Hot-Dipped galvanized Zinc. In applying the company's Hot-Dipped Aluminum technology, we have developed a Hot-Dipped Aluminum Heat Exchanger Set. This applies in the maritime diesel engine system, under the sea water condition and hydrogen sulfide media, it is far superior than 316 L Stainless steel. Also, it has twice the thermal conductivity compared to 316 L Stainless Steel.

Since 2002, the Company has supplied to China Bohai Shipbuilding Heavy Industry (Code 431) three ships with Hot-Dipped Aluminum piping; and continues to supply to China COSCO, Shanghai Rongsheng, Zhoushan Shipyard and other companies some hundreds of tons of marine fittings, achieved good results.


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