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CN103286127A 原油油船货油舱上甲板用耐腐蚀钢板的制造方法及钢板 有权

原油油船货油舱上甲板用耐腐蚀钢板的制造方法及钢板
摘要：
一种原油油船货油舱上甲板用耐腐蚀钢板的制造方法及钢板，属于热轧平板船体结构用钢技术领域。通过板坯加热、板坯除鳞、轧制、ACC水冷和空气冷却的工艺制造而成。钢板以质量百分比计其化学成分为：C：0.02-0.25%，Si：0.05-0.5%，Mn：0.1-2.0%，P≤0.025%，S：≤0.01%， Cu：0.05-2%，Ni：0.05-2%，Cr：0.01-5%，W：0.001-1%，Zr：0.001-0.1%，Ca：0.0002-0.01%，Ti：0.005-0.1%，N：0.001-0.008%，Als：0.020-0.1%，余量为Fe及不可避免的杂质。优点在于：可直接裸态使用，显著降低上甲板的均匀腐蚀速率，无需涂层保护，延长使用寿命。
摘要（英）：

The invention discloses a method for manufacturing an anticorrosion steel plate for an upper deck on a crude oil tanker oil cargo tank and the steel plate and belongs to the technical field of steel for a hot-rolling slab ship structure. The steel plate is manufactured through the processes of plate blank heating, plate blanking scale removing, rolling, ACC water cooling and air cooling. The steel plate comprises the following chemical composition, by weight, 0.02%-0.25% of C, 0.05%-0.5% of Si, 0.1%-2.0% of Mn, <=0.025% of P, <=0.01% of S, 0.05%-2% of Cu, 0.05%-2% of Ni, 0.01%-5% of Cr, 0.001%-1% of W, 0.001%-0.1% of Zr, 0.0002%-0.01% of Ca, 0.005%-0.1% of Ti, 0.001%-0.008% of N, 0.020%-0.1% of Als, and the balance Fe and unavoidable impurities. The steel plate has the advantages of being capable of being used directly at an exposed state and obviously reducing the uniform corrosion rate on the upper deck, free of the requirements for coating protection and capable of prolonging service life.

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