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| Practice on EAF+LF+VOD/VHD smelting process of super duplex stainless steel |
| TAN Qing-feng1, CHEN De-li1, YAN Zhan-dong2, JIA Hong-shuai1, HAN Zhi-yuan1, WANG Yu-hui1 |
1. Technology Center, Fushun Specical Steel Co., Ltd., Fushun 113001, Liaoning, China;
2. Second Steelmaking Plant, Fushun Specical Steel Co., Ltd., Fushun 113001, Liaoning, China |
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Abstract The smelting process of super duplex stainless steel in Fugang was introduced. The production practices of vacuum oxygen blowing in VOD furnace, nitrogen blowing at bottom, secondary slagging and line feeding were carried out. The results show that low carbon content and accurate nitrogen content control are realized by setting reasonable oxygen and nitrogen blowing technology. In the reduction process, the appropriate slag basicity is adjusted, the molten steel is fed, the desulfurization and deoxidation are strengthened, the inclusion morphology is modified, and the precise chemical composition and good purity control of molten steel are ensured, which create favorable conditions for hot processing.
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Received: 09 February 2022
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| [1] |
吴玖. 双相不锈钢[M]. 北京:冶金工业出版社, 1999.
|
| [2] |
陆世英. 超级不锈钢和高镍耐蚀合金[M]. 北京:化学工业出版社,2012.
|
| [3] |
申文君,成国光,侯雨阳.国内外2205双相钢连铸坯凝固组织及碳偏析分析[J].中国冶金,2020,30(11):29.
|
| [4] |
王继红,丰涵,宋志刚,等.钨含量及固溶温度对022Cr25Ni7-Mo3.5WCuN钢耐腐蚀性能的影响[J].中国冶金,2019,29(9):33.
|
| [5] |
Iza-Mendia A, Piũol-Juez A, Urcola J J, et al. Microstructural and mechanical behavior of a duplex stainless steel under hot working conditions[J]. Metallurgical and Materials Transactions A, 1998(29): 2975.
|
| [6] |
罗利阳, 宁天信, 张春林, 等. S32760超级双相不锈钢冷轧板的组织和性能[J].中国冶金, 2017, 27(3):16.
|
| [7] |
武敏, 廉晓洁, 曾莉, 等. 铸态超级双相不锈钢S32750热加工性能[J].钢铁,2013,48(6):54.
|
| [8] |
于海成, 严与辉, 刘小杨, 等. 双相不锈钢成分、性能及析出相分析[J]. 特殊钢, 2019, 40(3):53.
|
| [9] |
YAN Z, YUAN W, SHUAI T, et al. Edge cracking prevention in 2507 super duplex stainless steel by twin-roll strip casting and its microstructure and properties[J]. Journal of Materials Processing Technology, 2018, 266: 246.
|
| [10] |
王建勇, 吴明华, 孙健, 等. S32750超级双相不锈钢管坯的开发研制[J]. 金属世界, 2012(6):4.
|
| [11] |
安杰, 于丹, 耿振伟, 等. VOD不锈钢水的初始温度对精炼效果的影响[J]. 特殊钢, 2013, 34(1):3.
|
| [12] |
Mowers R G, Pehlke R D. The rate of solution of nitrogen in liquid Fe-Se and Fe-Te alloys[J]. Metallurgical Transactions, 1970, 1(1):51.
|
| [13] |
ZHENG L, LI H, WANG X, et al. Effect of CaF2 on viscosity and refining ability of highly basic slags for duplex stainless steel[J]. ISIJ International, 2021, 61(6): 744.
|
| [14] |
陈兴润, 潘吉祥. 2205双相不锈钢夹杂物水平改善[J]. 世界钢铁, 2014(4):6.
|
| [15] |
杨吉春, 王军, 任磊, 等. 铈对S32550双相不锈钢微观组织及冲击性能的影响[J].钢铁, 2020, 55(1):86.
|
| [16] |
陈兴润, 成国光, 惠恺, 等. 2205双相不锈钢连铸过程中夹杂物的形成机制[J].钢铁研究学报, 2019, 31(5):452.
|
| [17] |
崔利民, 张欣杰, 才丽娟. 超级双相不锈钢生产工艺实践[J].中国冶金,2017,27(9):44.
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|
|
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2022, Vol. 32 
