Influence of TiO2 content on the physical properties of the CaF2—Al2O3-CaO—MgO—TiO2 five yuan electroslag remelting system

SHI Shuai; GENG Xin; JIANG Zhou-hua; LI Hua-bing; XU Fang-hong; WANG Li-xin

doi:10.13374/j.issn2095-9389.2018.s1.008

Volume 40 Issue S1

Dec. 2018

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SHI Shuai, GENG Xin, JIANG Zhou-hua, LI Hua-bing, XU Fang-hong, WANG Li-xin. Influence of TiO2 content on the physical properties of the CaF2—Al2O3-CaO—MgO—TiO2 five yuan electroslag remelting system[J]. Chinese Journal of Engineering, 2018, 40(S1): 47-52. doi: 10.13374/j.issn2095-9389.2018.s1.008

Citation:

SHI Shuai, GENG Xin, JIANG Zhou-hua, LI Hua-bing, XU Fang-hong, WANG Li-xin. Influence of TiO₂ content on the physical properties of the CaF₂—Al₂O₃-CaO—MgO—TiO₂ five yuan electroslag remelting system[J]. Chinese Journal of Engineering, 2018, 40(S1): 47-52. doi: 10.13374/j.issn2095-9389.2018.s1.008

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Influence of TiO₂ content on the physical properties of the CaF₂—Al₂O₃-CaO—MgO—TiO₂ five yuan electroslag remelting system

doi: 10.13374/j.issn2095-9389.2018.s1.008

1. School of Metallurgy,Northeastern University;
2. Technology Center,Shanxi Taigang Stainless Steel Co.,Ltd.

Received Date: 2018-10-23
Available Online: 2023-07-18

Abstract

Abstract

The addition of Ti O₂during the electroslag remelting (ESR) of Ti-containing superalloys can restrain the loss of Ti elements.The physical properties of the slag system are related to the smooth operation of smelting and the excellent quality of products.A five-membered slag system composed of Ca F₂-Al₂O₃-Ca O-MgO, and different contents of Ti O₂was designed for ESR of superalloys.The effects of Ti O₂content on the melting point, viscosity, density, optical alkalinity, electrical conductivity, and other physical parameters of the slag were studied.Resultsshow that the melting temperature range of the slag is 1264-1296℃.In addition, the melting point of the slag decreases gradually with the increase in Ti O₂content and the formation of a low-melting-point phase.The addition of Ti O₂can decrease the viscosity of the slag, and this viscosity in the high-temperature region (1350-1550℃) only slightly changes, thereby improving the surface-forming quality of the ESR ingot.The electrical conductivity, optical basicity, and density of the slag system decrease with the increasing Ti O₂content from 0%to 9%of the mass fraction.The density and optical alkalinity show no considerable changes, and the five groups of slag are in line with the ESR on the density and optical alkalinity requirements.
- electroslag remelting,
- slag,
- TiO2,
- melting characteristics,
- viscosity

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References(16)

References

[1]	Li X, Geng X, Jiang Z H, et al. Influences of slag system on metallurgical quality for high temperature alloy by electroslag remelting. Iron Steel, 2015, 50 (9) :41 (李星, 耿鑫, 姜周華, 等.電渣重熔高溫合金渣系對冶金質量的影響.鋼鐵, 2015, 50 (9) :41)
[2]	Li Z B. Theory and Practice of Electroslag Metallurgy. Beijing:Metallurgical Industry Press, 2010 (李正邦.電渣冶金的理論與實踐.北京:冶金工業出版社, 2010)
[3]	Chen C X, Wang Y, Fu J, et al. Study on titanium loss of high titanium and low aluminum superalloy during electroslag remelting.J Beijing Univ Iron Steel Technol, 1980 (3) :36 (陳崇禧, 王湧, 傅杰, 等.高鈦低鋁高溫合金電渣重熔鈦燒損的研究.北京鋼鐵學院學報, 1980 (3) :36)
[4]	Zhao X H, Zhang Z H, Ju J T, et al. Study on melting temperature of CaF2-SiO2--Al2O3-CaO--Mg O slag. Hot Working Technol, 2013, 42 (9) :81 (趙曉輝, 張朝暉, 巨建濤, 等. CaF2--SiO2--Al2O3--CaO-Mg O渣系熔化溫度的實驗研究.熱加工工藝, 2013, 42 (9) :81)
[5]	Jiao Z Y, Zhang B, Qiao J F, et al. Experimental study on the viscosity of CaF2-SiO2-Al2O3--CaO--Mg O slag. J Iron Steel Res, 2013, 25 (6) :29 (焦志遠, 張波, 喬進峰, 等. CaF2--SiO2-Al2O3-CaO-Mg O五元渣系黏度的試驗研究.鋼鐵研究學報, 2013, 25 (6) :29)
[6]	Hao Y D, Wu L, Li S Q. Experiments on the melting properties of Ca O--Al2O3--Si O2-Ti O2slag. J Chongqing Univ, 2013, 36 (5) :51 (郝以黨, 吳龍, 李士琦. CaO-Al2O3--SiO2--Ti O2渣系熔化性能實驗.重慶大學學報, 2013, 36 (5) :51)
[7]	Tong Z F, Qiao J L, Chen T. Effect of composition on viscosity of CaO-Al2O3--SiO2-Ti O2--Mg O-Na2O system slag. Chin J Process Eng, 2016, 16 (2) :189 (佟志芳, 喬家龍, 陳濤.爐渣組分對Ca O--Al2O3-Si O2-Ti O2-Mg O--Na2O渣系粘度的影響.過程工程學報, 2016, 16 (2) :189)
[8]	Shi G Y, Zhang T A, Niu L P, et al. Research on properties of low fluoride CaF2-CaO--Al2O3--Mg O--SiO2refining slag. Chin J Process Eng, 2011, 11 (4) :695 (史冠勇, 張廷安, 牛麗萍, 等.低氟Ca F2--Ca O-Al2O3-Mg OSi O2系精煉渣的性能.過程工程學報, 2011, 11 (4) :695)
[9]	Medovar L, Fedorovskii B, Stovpchenko A, et al. ESR of hollow ingots. New approaches to a traditional problem//Proceedings of18th Int Forgemasters Meet. Pittsburgh, 2001:183
[10]	Yang J W. Study on High Al2O3BF-Slag’s Metallurgical Property[Dissertation]. Tangshan:Hebei Polytechnic University, 2005 (楊建煒.高Al2O3高爐渣冶金性能的研究[學位論文].唐山:河北理工大學, 2005)
[11]	Liang L K. On the problem of optical alkalinity of slag. Liaoning Metall, 1995 (5) :24 (梁連科.關于爐渣的光學堿度問題.遼寧冶金, 1995 (5) :24)
[12]	Ogino H, Hashimoto H, Hara S. Measurement of the electrical conductivity of ESR fluxes containing fluoride by four electrodes method with alternating current. Tetsu-to-Hagane, 1978, 64 (2) :225 (荻野和巳, 橋本英弘, 原茂太.交流4端子法によるフッ化物を含むESR用フラックスの電導度の測定.鐵と鋼:日本鐡鋼協會々誌, 1978, 64 (2) :225)
[13]	Guo X Z, Li J M, Wen G Y, et al. Study on metallurgical properties of medium-content titania bearing blast furnace slag. Iron Steel Van Tit, 2000, 21 (1) :1 (郭興忠, 李勁明, 文光遠, 等.中鈦型高爐渣的冶金性能.鋼鐵釩鈦, 2000, 21 (1) :1)
[14]	Park H, Park J Y, Kim G H, et al. Effect of Ti O2on the viscosity and slag structure in blast furnace type slags. Steel Res Int, 2012, 83 (2) :150
[15]	Sohn I, Wang W L, Matsuura H, et al. Influence of Ti O2on the viscous behavior of calcium silicate melts containing 17 mass%Al2O3and 10 mass%Mg O. ISIJ Int, 2012, 52 (1) :158
[16]	Mu H W, Zhang S H, Lv Q, et al. Experimental study on viscosity of blast furnace slag with medium titania and high alumina content under neutral atmosphere. Iron Steel, 2012, 47 (6) :18 (穆紅旺, 張淑會, 呂慶, 等.中性氣氛下高鋁中鈦型高爐渣黏度的試驗研究.鋼鐵, 2012, 47 (6) :18)