锻轧结合二火成材对大规格轴承钢芯部组织与性能的影响

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英文篇名：I INFLUENCE OF TWICE-HEATING PRODUCTION WITH FORGING AND ROLLING COMBINATION ON THE MICROSTRUCTURE AND PROPERTIES OF LARGE SCALE BEARING STEEL CORE 作者：李雷 英文作者：Li Lei;HBIS Group Shisteel Company; 关键词：锻轧结合 ; 二次成材 ; 轴承钢 ; 芯部组织 ; 性能 ; 影响 英文关键词：forging and rolling combination;;two heat;;bearing steel;;core structure;;property;;influence 中文刊名：HBYJ 英文刊名：Hebei Metallurgy 机构：河钢集团石钢公司; 出版日期：2018-08-28 出版单位：河北冶金 年：2018 期：No.272 语种：中文; 页：HBYJ201808017 页数：5 CN：08 ISSN：13-1172/TF 分类号：72-75+82

摘要

研究了先锻后轧二火成材工艺与一次成材直接锻造工艺对Φ150 mm GCr15Si Mn低钛轴承钢芯部组织与性能的影响。结果表明:使用600 mm圆坯一火锻成310 mm×310 mm方坯,再二火轧制成150 mm圆轧材,对该规格低钛轴承钢的中心缩孔残余、偏析、疏松等内部组织改善效果显著,探伤合格率明显提高。
        The effects of twice-heating production with forging and rolling and direct forging process on the microstructure and properties of 150 mm GCr15 SiMn lowtitanium bearing steel core were studied. The results showthat the 600 mm round billet is forged into 310 mm × 310 mm billet in one heat,and then rolled into 150 mm round rolling material in two heat,which has significantly improve the internal microstructure including the central shrinkage cavity,segregation and looseness of the lowtitanium bearing steel,and the qualification rate of the flawdetection.

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