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

杨咏阶

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

更新时间：2026-01-21

- Process Practice to Control of Precipitation of TiN in ER70S-G Welding Wire Steel Containing Titanium and Prevent Nozzle Clogging
- Special Steel Vol. 36, Issue 6, Pages: 13-15(2015)
- 作者机构：
  
  青岛钢铁控股集团有限责任公司炼钢总厂,青岛,266043
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 June 2015，
  
  Online First：11 August 2022，
  
  Published：11 August 2015
- 稿件说明：
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杨咏阶. Process Practice to Control of Precipitation of TiN in ER70S-G Welding Wire Steel Containing Titanium and Prevent Nozzle Clogging[J]. Special Steel, 2015, 36(6): 13-15.
DOI：

杨咏阶. Process Practice to Control of Precipitation of TiN in ER70S-G Welding Wire Steel Containing Titanium and Prevent Nozzle Clogging[J]. Special Steel, 2015, 36(6): 13-15. DOI：

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℃

]

≤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。

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

]

≤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.

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