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 ›› 2015, Vol. 36 ›› Issue (6): 13-15.

• 工艺技术 • 上一篇    下一篇

控制ER70S-G含钛焊丝钢TiN析出和防止水口结瘤的工艺实践

杨咏阶   

  1. 青岛钢铁控股集团有限责任公司炼钢总厂,青岛266043
  • 收稿日期:2015-06-25 出版日期:2015-12-01 发布日期:2022-08-11
  • 作者简介:杨咏阶(1977-),男,硕士(2007年北京科技大学),工程师, 2000年武汉科技大学(本科)毕业,工艺技术和品种开发。

Process Practice to Control of Precipitation of TiN in ER70S-G Welding Wire Steel Containing Titanium and Prevent Nozzle Clogging

Yang Yongjie   

  1. Steelmaking General Plant, Qingdao Iron and Steel Group Co Ltd, Qingdao 266043
  • Received:2015-06-25 Published:2015-12-01 Online:2022-08-11

摘要: ER70S-G含钛焊丝钢(/%:0.07C,0.82Si,1.49Mn,0.012P,0.010S,0.19Ti,0.006 2N)生产流程为80 t顶底复吹转炉-LF-150 mm×150 mm方坯连铸-盘条轧制工艺。热力学计算和生产实践表明,当浇铸温度≥1560℃,[N]≤78.6×10-6,[Ti/%][N/%]≤0.00149及拉速2.0~2.5 m/min时,可以避免在浇铸过程TiN析出和水口结瘤。

关键词: 含钛焊丝钢, TiN, 连铸, 析出, 水口结瘤, 工艺实践

Abstract: The production flowsheet of ER70S-G welding wire steel containing titanium (/% : 0. 07 C, 0. 82Si, 1. 49Mn, 0. 012P, 0. 010S, 0. 19Ti, 0.0062N) is 80 t top and bottom combined blown converter-LF-150 mm x 150 mm billet casting- coil rolling process. The results of thermodynamic calculation and production practice show that with control of liquid casting temperature ≥1560 °C , [N] ≤78. 6 x 10-6, [Ti/% ] [N/% ] ≤0.00149 and casting speed 2.0 -2.5 m/min, it is available to avoid the precipitation of TiN during casting process and the nozzle clogging.