高碳钢方坯内部缺陷及其对线材力学性能的影响  

Internal Defects in High Carbon Steel Billets and Their Effects on the Mechanical Properties of Wire Rods

作　　者：范伟[1] 胡明[1] 翟有有[1] FAN Wei;HU Ming;ZHAI Youyou(Gansu Jiu Steel Group Hongxing Iron&Steel Co.Ltd.,Jiayuguan 735100,China)

机构地区：[1]甘肃酒钢集团宏兴钢铁股份有限公司,甘肃嘉峪关735100

出　　处：《甘肃冶金》2025年第1期93-98,共6页Gansu Metallurgy

摘　　要：通过分析87B高碳钢铸坯内部缺陷的类型和级别,评估了87B生产过程中不同内部的内部缺陷可能对盘条力学性能的影响。结果表明:铸坯内部缺陷以缩孔、偏析为主,等级低于1级,铸坯断面上C含量的偏析倾向最大,偏析系数为1.092。这些轻微的铸坯内缺陷可以在轧制过程中予以消除,铸坯中缺陷不会对盘条的性能带来不利的影响。By analyzing the types and levels of internal defects in 87B high carbon steel billets,the possible impact of different internal factors on the mechanical properties of wire rods during the production process of 87B was evaluated.The internal defects of the billet are mainly shrinkage and segregation,with a grade lower than level 1.The segregation tendency of C content is the highest,with a segregation coefficient of 1.092.Various defects formed in the billet can be eliminated by controlling heating and rolling in the existing production process,and the defects in the billet be not have adverse effects on the performance of the wire rod.

关 键 词：高碳钢87B 方坯 内部缺陷 12.5 mm线材 

分 类 号：TG142.1[一般工业技术—材料科学与工程]