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发明公开
CN102653845A 一种LPG船储罐用钢板及其生产方法 无效 - 驳回

一种LPG船储罐用钢板及其生产方法
摘要：
本发明公开了一种LPG(液化石油气)船储罐用钢板，同时，还公开了一种该钢板的生产方法。本发明的LPG船储罐用钢板，是由以下重量百分含量的组分组成：C：0.14%~0.16%，Si：0.20%~0.40%，Mn：1.05%~1.10%，P≤0.012%，S≤0.005%，Cr：0.30%~0.35%，Ni：0.40%~0.45%，Mo：0.25%~0.30%，Nb：0.02%~0.03%，V：0.035%~0.040%，Ti：0.01%~0.02%，B：0.0015%~0.0020%，N≤0.010%，Cu≤0.20%，Al总：0.02%~0.05%，余量为Fe和不可避免的杂质。该钢板的生产方法包括以下步骤：冶炼→LF/VD精炼→浇铸→加热→轧制→冷却→调质→成品钢板。本发明的LPG船储罐用钢板的厚度为8~50mm，该钢板的致密性高，强度高，低温冲击韧性好，抗层状撕裂性能良好，能够满足LPG船储罐的要求，用于储存LPG等介质。
摘要（英）：

The invention discloses a steel plate for an LPG (Liquefied Petroleum Gas) ship storage tank and a production method of the steel plate. The steel plate for the LPG ship storage tank comprises the following components in percentage by weight: 0.14-0.16% of C, 0.20-0.40% of Si, 1.05-1.10% of Mn, not more than 0.012% of P, not more than 0.005% of S, 0.30-0.35% of Cr, 0.40-0.45% of Ni, 0.25-0.30% of Mo, 0.02-0.03% of Nb, 0.035-0.040% of V, 0.01-0.02% of Ti, 0.0015-0.0020% of B, not more than 0.010% of N, not more than 0.20% of Cu, 0.02-0.05% of total Al, the balance of Fe and inevitable impurities. The production method of the steel plate comprises the following steps of: smelting; refining by an LF/VD (Ladle Furnace/Vacuum Degasser); casting; heating; rolling; cooling; thermal refining and obtaining a finished product of steel plate. The steel plate for the LPG ship storage tank has the thickness of 8-50mm, has high compactness and strength, low-temperature impact toughness and excellent lamellar tearing resistance, can satisfy the requirement of the LPG ship storage tank, and is used for storing media such as LPG.

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