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一前言近几年来,由于冶炼方面掌握了低硫、低碳、高锰的原则和轧制方面终轧温度采取了偏低的措施,4C船板热轧机械性能合格率有了比较大的提高。为进一步提高船用钢板合格率找出根据,我们对1981年生产的68批1156张D级船舶钢进行了全面的数理统计分析,求出了船板热轧机械性能与化学成份和轧制工艺之间的关系,分析了生产水平、冶炼水平和轧制水平,并给出了在当前生产状况下,进一步提高船板热轧机械性能,如何控制化学成份和轧制工艺的算法。 D级船用钢对化学成份和机械性能的规范见表1。
A foreword In recent years, due to the smelting mastered the principles of low sulfur, low carbon, high manganese and rolling finishing rolling temperature taken low measures, 4C shipbuilding hot rolling machinery performance pass rate has been greatly improved . To further improve the qualified rate of marine steel to find out the basis, we produced a total of 68 batches of 1156 Class D shipbuilding in 1981 conducted a comprehensive mathematical statistics to determine the ship’s hot-rolling mechanical properties and chemical composition and rolling process The relationship between production level, smelting level and rolling level is analyzed. The algorithm of how to control the chemical composition and the rolling process is also given under the current production conditions to further improve the mechanical properties of the hot rolling mill. Class D shipbuilding steel chemical composition and mechanical properties of the norms in Table 1.