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 (3): 54-56.

• 组织和性能 • 上一篇    下一篇

Q450NQR1高强度耐候钢连铸板坯的高温性能

黎建全1,杨素波1,高兴健2,陈登福2,宋立伟2,毕艳艳2   

  1. 1攀枝花钢钥有限公司,攀枝花617067;
    2重庆大学材料科学与工程学院,重庆400030
  • 收稿日期:2009-11-03 出版日期:2010-06-01 发布日期:2022-11-07
  • 作者简介:黎建全(1968-),男,高级工程师,重庆大学毕业,连铸工艺和质量控制。
  • 基金资助:
    国家自然科学基金资助(50774105) ;2009年高等学 校博士学科点专项科研基金资助(20090191110012)

Elevated Temperature Performance of Casting Slab of High Strength Weather-Resisting Steel Q450NQR1

Li Jianquan1 , Yang Subo1 , Gao Xingjian2, Chen Dengfu2, Song Liwei2 , Bi Yanyan2   

  1. 1 Steel and Vanadium Co Ltd, Pansteel Group, Panzhihua 617067 ;
    2 College of Materials Science and Engineering, Chongqing University, Chongqing 400030
  • Received:2009-11-03 Published:2010-06-01 Online:2022-11-07

摘要: 采用DIL402C热膨胀仪和Gleeble-1500D热模拟试验机,测试了Q450NQR1钢(%:0.05~0.10C、0.30~0.50Si、0.80~1.00Mn、0.20~0.30Cu、0.15~0.35Ni、0.40~0.60Cr)200 mm×1 350 mm铸坯的热膨胀性能和高温力学性能。结果表明,升-降温速率由5℃/min提高至10℃/min时,升温相变温度区间上移,降温相变区间下移;Q450NQR1钢连铸坯二次脆性区为750~1 050℃,铸坯的矫直温度应≥1 050℃。

关键词: Q450NQR1, 高强度耐候钢, 热膨胀性能, 热塑性

Abstract: Thermal expansion characteristics and elevated temperature mechanical properties of 200 mm x 1 350 mm casting slab of steel Q450NQR1 (% : 0. 05 ~0. 10C, 0. 30 ~0. 50Si, 0. 80 ~ 1. 00Mn, 0. 20 ~0. 30Cu, 0. 15 ~0. 35Ni, 0. 40 - 0. 60Cr) have been examined by using thermal expansion tester DIL402C and thermal simulater Gleeble-1500D. Results show that with increasing heating and cooling rate from 5 ℃/min to 10 ℃/min, the heating phase transformation region moves up and the cooling phase transformation region moves down; the secondary brittleness zone of casting slab of steel Q450NQR1 is 750 ~ 1 050 ℃,therefore the straightening temperature of slab should be ≥1 050 ℃.

Key words: High Strength Weather-Resisting Steel Q450NQR1, Thermal Expansion Characteristic, Thermoplasticity