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为了达到船级社认证要求的较高的低温冲击韧性、良好的可焊性等特殊要求,首钢通过采用低碳、Nb/V/Ti、Ni微合金化的成分设计,严格控制化学成分及钢水洁净度,尤其是TMCP控轧控冷工艺制度等主要冶金技术,开发了合金用量低、工序少、具有良好的低温韧性和焊接性能的E36/40、F36/40级船板.采用该项工艺生产的E36/E40级高强船板工艺达到稳定工业批量生产水平,钢板性能合格率、产品成材率较高,生产工艺合理,质量稳定,产品综合性能优良.
In order to meet the special low temperature impact toughness and good solderability requirements of classification societies, Shougang strictly controls chemical composition and molten steel by adopting low carbon, Nb / V / Ti and Ni microalloying components Cleanliness, especially TMCP controlled rolling and controlled cooling process system and other major metallurgical technologies, the development of the alloy dosage is low, the process less, with good low temperature toughness and welding performance of the E36 / 40, F36 / 40 ship board using the process The production of E36 / E40-class high-strength ship board technology to achieve a stable level of industrial mass production, steel performance pass rate, product yield is higher, the production process is reasonable, stable quality, excellent overall product performance.