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发明授权
CN102011050B 一种36kg级海洋平台用钢及其生产方法 有权 转让

一种36kg级海洋平台用钢及其生产方法
摘要：
一种36kg级海洋平台用钢及其生产方法，属于船体及海洋工程用结构钢技术领域。化学成分为：5～50mm厚度规格钢板：C：0.14～0.18％，Si：0.20～0.50％，Mn：1.30～1.60％，Nb：0.02～0.05％，S：≤0.005％，P≤0.015％，Als：0.020～0.04％，余量为Fe及不可避免的杂质；50＞-80mm厚度规格钢板：C：0.12～0.18％，Si：0.20～0.50％，Mn：1.30～1.60％，Nb：0.02～0.05％，V：0.02～0.06％，Ti：0.010～0.020％，Ni：0.10～0.40％，S：≤0.005％，P≤0.015％，Als：0.020～0.04％，余量为Fe及不可避免的杂质；并且，Nb+V+Ti≤0.12％。优点在于，生产成本较低；综合性能均匀、稳定、冷弯性能良好。
摘要（英）：

The invention relates to steel for a 36kg-grade ocean platform and a production method thereof, belonging to the technical field of a ship body and structural steel for oceanographic engineering. A steel plate with thickness of 5-50mm comprises the following chemical components: 0.14-0.18 percent of C, 0.20-0.50 percent of Si, 1.30-1.60 percent of Mn, 0.02-0.05 percent of Nb, less than or equal to 0.005 percent of S, less than or equal to 0.015 percent of P, 0.020-0.04 percent of Als, and the balance of Fe and inevitable impurities; a steel plate with the thickness of 50-80mm comprises the following chemical components: 0.12-0.18 percent of C, 0.20-0.50 percent of Si, 1.30-1.60 percent of Mn, 0.02-0.05 percent of Nb, 0.02-0.06 percent of V, 0.010-0.020 percent of Ti, 0.10-0.40 percent of Ni, less than or equal to 0.005 percent of S, less than or equal to 0.015 percent of P, 0.020-0.04 percent of Als, and the balance of Fe and inevitable impurities; and in addition, the sum of Nb, V and Ti is less than or equal to 0.12 percent. The production method has the advantages of low production cost, uniform and stable comprehensive performance and good cold bending property.

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