| 控制ER70S-G含钛焊丝钢TiN析出和防止水口结瘤的工艺实践 |
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| 引用本文： | 杨咏阶.控制ER70S-G含钛焊丝钢TiN析出和防止水口结瘤的工艺实践[J].特殊钢,2015,36(6):13-15. |
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| 作者姓名： | 杨咏阶 |
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| 作者单位： | 青岛钢铁控股集团有限责任公司炼钢总厂，青岛266043 |
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| 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。
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| 关 键 词： | 含钛焊丝钢 TiN 连铸 析出 水口结瘤 工艺实践 |
| 收稿时间： | 2015-06-25 |
Process Practice to Control of Precipitation of TiN in ER70S-G Welding Wire Steel Containing Titanium and Prevent Nozzle Clogging |
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| Yang Yongjie.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. |
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| Authors: | Yang Yongjie |
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| Affiliation: | Steelmaking General Plant, Qingdao Iron and Steel Group Co Ltd, Qingdao 266043 |
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| 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. |
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