ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2010, Vol. 31 ›› Issue (5): 42-44.

• 工艺技术 • 上一篇    下一篇

改善GCr15轴承钢小型棒材低倍质量的连轧工艺实践

付俊薇1,赵杰2,刘建培2,周建英2   

  1. 1. 河北工业职业技术学院,石家庄 050091;
    2. 河北钢铁集团石家庄钢铁有限责任公司,石家庄 050031;
  • 收稿日期:2010-04-15 出版日期:2010-10-01 发布日期:2022-11-11
  • 作者简介:付俊薇(1964-),女,副院长,教授,1988年唐山工程技术学院毕业,冶金工艺研究。

Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5

Fu Junwei2 , Zhao Jie2 , Liu Jianpei2 , Zhou Jianying2   

  1. 1. Hebei Industrial Vocational and Technical College, Shijiazhuang 050091 ;
    2. Shijiazhuang Iron and Steel Co Ltd, Hebei Iron and Steel Group, Shijiazhuang 050031;
  • Received:2010-04-15 Published:2010-10-01 Online:2022-11-11

摘要: 通过降低轧制速度,增加粗轧道次压下量特别是后几道次的压下量,使GCr15轴承钢150 mm×150mm铸坯连轧成Φ30~45 mm材的低倍质量明显提高,缩孔出现率由改善轧制工艺前的26%~46%降至0,超声波探伤合格率100%,一般疏松级别0~1,中心疏松级别1~1.5。

关键词: GCr15轴承钢, 棒材连轧, 缩孔残余, 道次压下量, 工艺改善

Abstract: With decreasing rolling speed, increasing reduction in rough rolling passes especially in last passes, the quality of macrostructure of continuous rolling Φ30 ~45 mm round products of bearing steel GCr15 rolled from 150 mm x 150 mm casting billet increases obviously i. e. occurred ratio of residual shrinkage hole decreases to 0 from 26%〜46% before improvement of rolling process, qualified ratio of ultrasonic detection is 100% , rating of general porosity is 0 ~1 and rating of center porosity is 1-1.5.

Key words: Bearing Steel GCr15, Continuous Rolling for Bar Products, Residual Shrinkage Hole, Reduction in Pass, Process Improvement