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发明公开
CN102851578A 一种核电工程设备用超大厚度钢板及生产方法 无效 - 驳回

一种核电工程设备用超大厚度钢板及生产方法
摘要：
本发明涉及一种核电工程设备用超大厚度钢板及生产方法，属于炼钢生产技术领域。技术方案是该钢板由以下重量百分含量的组分组成：C≤0.20%，Si：0.10-0.30%，Mn：1.15-1.60%，P≤0.012%，S≤0.010，Mo：0.45-0.55%，Ni：0.50-0.80%，Cr≤0.20%，V≤0.01%，Cu≤0.18%，Nb≤0.02%，Ti≤0.03%，Al总≥0.020%，Cu+6Sn≤0.33%。残余量为Fe和不可避免的杂质，包含冶炼、浇铸、加热、轧制、冷却、调质工序。本发明的超大厚度钢板及生产方法，钢板的厚度为155mm，生产方法新颖独特，钢板强度适中，低温冲击韧性和高温拉伸性能良好，抗层状撕裂性能、冷加工及焊接性能均良好，满足核电关键设备的要求，可应用于核电站蒸发器、高压封头及压力容器等关键设备的制造。
摘要（英）：

The invention relates to a steel plate with super-large thickness for nuclear power engineering equipment and a production method thereof, and belongs to the technical field of steelmaking. A technical scheme is as below: the steel plate comprises the following components, by weight: no more than 0.20% of C, 0.10-0.30% of Si, 1.15-1.60% of Mn, no more than 0.012% of P, no more than 0.010% of S, 0.45-0.55% of Mo, 0.50-0.80% of Ni, no more than 0.20% of Cr, no more than 0.01% of V, no more than 0.18% of Cu, no more than 0.02% of Nb, no more than 0.03% of Ti, no less than 0.020% of Al, no more than 0.33% of Cu+6Sn, and the balance of Fe and unavoidable impurities; and the production method comprises steps of smelting, casting, heating, rolling, cooling and tempering. The steel plate with super-large thickness and the production method thereof have advantages of a steel plate thickness of 155mm, novel production method, moderate strength of the steel plate, good low temperature impact toughness and high-temperature tensile performance, and good lamellar tearing resistance, cold machining and welding performance; and the steel plate can meet requirements of key equipment of nuclear power, and can be applied to manufacture of nuclear power key equipment, such as evaporator, high pressure dish head and pressure vessel, etc.

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