825合金抽锭式快速电渣重熔锭表面质量和Ti烧损的控制

特殊钢 ›› 2016, Vol. 37 ›› Issue (4): 37-40.

825合金抽锭式快速电渣重熔锭表面质量和Ti烧损的控制

薛正学^1,2，郑亚旭¹，姜方^1,2，都郢祁¹，郭保善¹，林鹏¹，史成斌³

1邢台钢铁有限责任公司重熔钢研究所，邢台054027 ；
2河北省线材工程研究中心，邢台054027；
3北京科技大学钢铁冶金新技术国家重点实验室，北京100083

收稿日期:2016-03-07 出版日期:2016-08-01 发布日期:2022-08-02
基金资助:
中央高校基本科研业务费专项资金项目(FRF-TP- 15-010A2)和钢铁冶金新技术国家重点实验室自主研发项目(41603017)资助

Control of the Surface Quality of As-Cast Ingot and Ti Loss during Drawing-Ingot- Type Electroslag Rapid Remelting of Alloy 825

Xue Zhengxue^1，2， Zheng Yaxu¹， Jiang Fang^1，2， Du Yingqi¹， Guo Baoshan¹ , Lin Peng¹， Shi Chengbin³

1 Xingtai Iron and Steel Corp Ltd, Xingtai 054027 ；
2 Hebei Wire Rod Engineering Technology Research Center, Xingtai 054027；
3 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083

Received:2016-03-07 Published:2016-08-01 Online:2022-08-02

摘要/Abstract

摘要： 825高温合金325 mm×280 mm电极（/%:<0.01C,0.21Si,0.40Mn,0.020P,0.003S,22.5Cr,39.1Ni,3.0Mo,2.1Cu,1.17Ti,0.17Al）经气体保护抽锭式快速电渣重熔成160mm×160mm 1.8t电渣锭。试验研究了CaF₂-CaO-Al₂O₃基础渣加TiO₂,TiO₂-MgO或TiO₂-SiO₂以及熔速（300~500 kg/h）对825合金重熔锭表面质量和Ti烧损的影响。结果表明,渣中含少量SiO₂的CaF₂-CaO-Al₂O₃-TiO₂-SiO₂五元渣系,重熔速率为400 kg/h时,可以明显改善825合金电渣锭的表面质量,同时可以抑制Ti的烧损。

Abstract: The 325 mm x 280 mm electrode of superalloy 825 ( /%： < 0. 01C, 0. 21 Si, 0. 40Mn, 0. 020P,0. 003S, 22. 5Cr, 39. INi, 3. 0Mo, 2. ICu, 1. 17Ti, 0. 17Al) is remelted by protective gas drawing-type electroslag rapidremelting to 160 mm x 160 mm 1. 8 t ingot. Effect of adding TiO₂, TiO₂ -MgO or TiO₂-SiO₂ in base slag CaF₂-CaO-Al₂O₃and remelting rate (300 ~500 kg/h) on the surface quality and Ti loss of alloy 825 remelted ingot is tested and studied. Results show that by quinary slag series CaF₂ -CaO-Al₂O₃ -TiO₂ -SiO₂ adding small amount SiO₂with remelting rate 400 k／h, the surface quality of electro-slag remelting ingot of alloy 825 improves obviously while the Ti loss is prevented.

薛正学, 郑亚旭, 姜方, 都郢祁, 郭保善, 林鹏, 史成斌. 825合金抽锭式快速电渣重熔锭表面质量和Ti烧损的控制[J]. 特殊钢, 2016, 37(4): 37-40.

Xue Zhengxue, Zheng Yaxu , Jiang Fang, Du Yingqi , Guo Baoshan , Lin Peng and Shi Chengbin. Control of the Surface Quality of As-Cast Ingot and Ti Loss during Drawing-Ingot- Type Electroslag Rapid Remelting of Alloy 825[J]. Special Steel, 2016, 37(4): 37-40.