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 ›› 2021, Vol. 42 ›› Issue (3): 67-70.

• 组织和性能 • 上一篇    下一篇

终轧温度和晶粒度对非调质钢JGF45V冲击功的影响

韩怀宾1,2,3, 宋建锋3, 王清波3, 白瑞娟3,王维2,3虞学庆3   

  1. 1. 东北大学轧制技术及连轧自动化国家重点实验室
    2. 河南省特殊钢材料研究院有限公司
    3. 河南济源钢铁(集团)有限公司
  • 收稿日期:2020-11-28 出版日期:2021-05-15 发布日期:2023-01-10
  • 作者简介:韩怀宾(1982-) ,男,博士生(东北大学),高级工程师,2005年安徽工业大学(本科)毕业,非调质钢开发。

Effect of Finishing Rolling Temperature and Grain Size on Impact Energy of Non-Quenched-Tempered JGF45V Steel

Han Huaibin1,2,3, Song Jianfeng3 , Wang Qingbo3, Bai Ruijuan3 , Wang Wei2,3 , Yu Xueqing3   

  1. 1 State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819
    2 Henan Special Steel Advance Materials Research Institute Co Ltd, Jiyuan 459000
    3 Henan Jiyuan Iron & Steel (Group) Co Ltd, Jiyuan 459000
  • Received:2020-11-28 Published:2021-05-15 Online:2023-01-10

摘要: 对非调质钢JGF45V终轧1 000℃热轧态和860℃正火态冲击功试样进行金相分析和扫描电镜分析,得出晶粒度是影响非调质钢JGF45V室温冲击功的重要参数。通过终轧温度由1 000℃降低至900~930℃,冷却速度为0.3℃/s的工艺试验,晶粒度级别由5提高到7,室温U型冲击功由32 J提高到≥55 J。

关键词: 非调质钢JGF45V, 冲击功, 晶粒度, 终轧温度, 冷速

Abstract: The impact energy samples of non-quenched-tempered steel JGF45V hot-rolled state by finishing rolling at 1 000℃ and normalized state by normalizing at 860℃ are analyzed by metallography and scanning electron microscope. It is obtained that grain size is an important parameter affecting room temperature impact energy of non-quenched-tempered JGF45V steel. Through process test of decreasing the finishing rolling temperature from 1 000℃ to 900 ~930 % with the cooling rate being 0. 3 ℃/s, the grain size rating of steel increases from 5 to 7, and the room U-shaped impact energy increases from 32 J to ≥55 J.