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 ›› 2009, Vol. 30 ›› Issue (3): 40-41.

• 工艺技术 • 上一篇    下一篇

水平连铸工艺对40Cr钢φ150 mm管坯中间裂纹的影响

刘纲1,朱荣1, 钟春生2, 刘剑辉1, 周振华1, 王慧霞1   

  1. 1北京科技大学冶金与生态匚程学院,北京100083;
    2湖南衡阳钢管公司技术中心,衡阳421001
  • 收稿日期:2008-11-18 出版日期:2009-06-01 发布日期:2022-11-24
  • 作者简介:刘纲(1982-),男,硕士研究生,2006年武汉科技大学毕业,连铸工艺研究。

Effect of Horizontal Casting Process on Middle Crack of φ150 mm Tube Blank of Steel 40 Cr

Liu Gang1, Zhu Rong1, Zhong Chunsheng2, Liu Jianhui1 , Zhou Zhenhua1, Wang Huixia1   

  1. 1 School of Metallurgical and Ecological Engineering, LTnivei-sitv of Science and Technology, Beijing 100083 ;
    2 Technical Center, Hunan Hengyang Steel Tube Co, Hengyang 421001
  • Received:2008-11-18 Published:2009-06-01 Online:2022-11-24

摘要: 采用射钉试验、红外测温等方法研究了40Cr钢φ150 mm管坯水平连铸时拉速和中间包钢水过热度对坯壳厚度和铸坯中间裂纹的影响,以及结晶器冷却水参数对铸坯中间裂纹的影响。结果表明,当拉速1.99 m/min,浇铸温度1 544℃,中间包钢水过热度45℃时,结晶器进水温度29.3℃,出水温度63.4℃,铸坯液芯长17.47 m,铸坯的中间裂纹≤0.1级,中心疏松和中心裂纹≤1.5级,满足产品要求。

关键词: 水平连铸, 40Cr钢, 圆坯, 拉坯工艺, 中间裂纹

Abstract: Effect of casting speed, super-heating degree of liquid steel in tundish on middle crack of cast blank and effec-t of mold cooling water technical parameters on shell thickness and <'enter crack of east blank for 40Cr steel φ150 mm tube blank during horizontal casting process have been studied by using pin shooting and infrared measuring temperature etc methods. Results showed that with casting speed 1. 99m/min, casting temperature 1 544 °C , super-heating decree of liquid steel in tundish- 45 °C , and mold intake water temperature 29. 3℃ , outlet water temperature 63. 4℃ , the liquid core length of cast billet was 17. 47 m, the rating of middle crack ≤0.1, and the rating of center porocity and center crack of cast billet was ≤l. 5 to meet the requirement of products.

Key words: Horizontal Casting, Steel 40Cr, Round Billet, Casting Process, Middle Crack