对成品直径为φ6~φ10 mm的Q235钢热轧带肋超级钢线材进行了研究.经成分微调,采用碳的质量分数为0.21%~0.25%,硅的质量分数为0.3%~0.4%,锰的质量分数为0.7%~0.8%的钢坯及合理的控轧控冷工艺制度,使屈服强度提高到415~460 MPa,抗拉强度与屈服强度比值大于1.2,线材产品的晶粒尺寸达到5 μm,金相组织为珠光体加铁素体.经8次控轧控冷工业试验已在国内成功轧制上述超级钢线材3100 t.
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