SA-182 F92吹氮合金化的应用研究
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摘要
在吹氮合金化增氮热力学和动力学理论分析的基础上,进行了钛渣电炉副产品半钢冶炼F92吹氮合金化技术的应用研究,提出了LF精炼、VD处理、补吹氮气进行氮合金化的生产工艺控制条件。研究表明:钢液经LF精炼过程中吹氮气增氮,VD续吹氮气、减压析氮处理后,净化效果显著;F92钢中氮含量能稳定控制在目标成分380×10~(-6)～450×10~(-6)范围内,纯净度高,无缺陷,完全满足ASME SA-182/SA-182M-2010标准要求。
Based on the theoretical analysis of thermodynamics and kinetics of adding nitrogen by blowing nitrogen,application study of F92 blowing nitrogen alloying technology had been carried out by using titanium slag furnace as a byproduct of liquid semisteel smelting,and then blowing nitrogen alloying process control conditions for LF refining,VD treatment,and supplementary blowing nitrogen had been proposed.The purification effect was significant after nitrogen adding by blowing nitrogen during LF refining process,VD continued blowing nitrogen and decompression nitrogen release treatment.The nitrogen content in the F92 steel can be stabilized in the target composition of 380×10~(-6)～450×10~(-6),with high cleanliness and no defect in bloom,which fully meets the requirements of ASME SA-182/SA-182 M-2010.
Based on the theoretical analysis of thermodynamics and kinetics of adding nitrogen by blowing nitrogen,application study of F92 blowing nitrogen alloying technology had been carried out by using titanium slag furnace as a byproduct of liquid semisteel smelting,and then blowing nitrogen alloying process control conditions for LF refining,VD treatment,and supplementary blowing nitrogen had been proposed.The purification effect was significant after nitrogen adding by blowing nitrogen during LF refining process,VD continued blowing nitrogen and decompression nitrogen release treatment.The nitrogen content in the F92 steel can be stabilized in the target composition of 380×10~(-6)～450×10~(-6),with high cleanliness and no defect in bloom,which fully meets the requirements of ASME SA-182/SA-182 M-2010.
引文
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[2]Dou Hong,Wang Zhiwu,Song Tao.Research progress of precipitated phase of T92/P92 steel for ultra supercritical pressure boilers[J].Guangdong Electric Power,2012,25(2):2.(窦洪,王志武,宋涛.超超临界压力锅炉用T92/P92钢析出相的研究进展[J].广东电力,2012,25(2):2.)
[3]Pehlke R D,Elliott J F.Solubility of nitrogen in liquid iron alloys[J].Trans Met Soc AIME,1960,21:1088.
[4]Satir-Kolorz A H,Feichtinger H K.On the solubility of nitrogen in liquid iron and steel alloys using elevated pressure[J].Z.Metallkd,1991,82(9):689-695.
[5]Chipman J,Corrigan D A.Prediction of the solubility of nitrogen in molten steel[J].Trans Met Soc AIME,1965,233(7):1249.
[6]Fu Jie.Kinetics of steel metallurgical process[M].Beijing:Metallurgical Industry Press,2001:218.(傅杰,钢冶金过程动力学[M].北京:冶金工业出版社,2001:218.)
[7]Henri G,Didier H.Nitrogen alloying of carbon and stainless steels by gas injection[J].Metallurgical and Materials Transactions B,2000,1(10):906.
[8]Oeters F.Steel metallurgy[M].Ni Ruiming,Zhang Shengbi,Xiang Changxiang,translation.Beijing:Metallurgical Industry Press,1997:198-199.(F.奥特斯.钢冶金学[M].倪瑞明,张圣弼,项长祥,译.北京:冶金工业出版社,1997:198-199.)
[9]Li Gang,Li Jingshe,Yang Shufeng,et al.Experiment and technology of adding nitrogen to nitrogen-containing stainless steels by blowing nitrogen gas[J].Journal of University of Science and Technology Beijing,2009,31(Suppl.1):86.(李刚,李京社,杨树峰,等.含氮不锈钢氮气增氮的实验及工艺[J].北京科技大学学报,2009,31(增刊1):86.)
[10]Huang Xihu.Principle of iron and steel metallurgy,4th ed[M].Beijing:Metallurgical Industry Press,2013:110.(黄希祜.钢铁冶金原理,第4版[M].北京:冶金工业出版社,2013:110.)
[11]LüXuefei,Cong Huayue,Zhang Yu,et al.Adding nitrogen process for V-N non-quenched and tempered steel during 45 t LF(VD)refining[J].Special Steel,2009,30(2):47.(吕学飞,丛花越,张宇,等.45tLF(VD)精炼钒氮非调质钢的增氮工艺[J].特殊钢,2009,30(2):47.)
[12]Jiang Zhouhua,Chen Zhaoping,Huang Zongze.Control of nitrogen in stainless steel during melting and solidification[J].Iron and Steel,2005,40(3):35.(姜周华,陈兆平,黄宗泽.不锈钢冶炼及凝固过程氮的控制[J].钢铁,2005,40(3):35.)
[13]Matsuno H,Kikuchi Y,Komatsu M,et al.Development of a new deoxidation technique for RH degassers[J].Iron and Steelmaker,1993,20(7):35-38.
[14]Li Kangwei,Liu Jianhua,Zhou Jianbo,et al.Micro non-metallic inclusion removal from molten with gas bubbles generated by the nitrogen absorbing and releasing method[J].Chinese Journal of Engineering,2015,37(9):1124-1129.(李康伟,刘建华,周剑波,等.增氮析氮法生成气泡去除钢液中显微非金属夹杂物[J].工程科学学报,2015,37(9):1124-1129.)
[15]Zhang Qingshan.Technicai study of P91 boiler tube blank[J].CFHI Technology,2009(3):29-31.(张青山.锅炉管坯P91工艺研究[J].一重技术,2009(3):29-31.)