1.东北特殊钢集团股份有限公司,大连 116014
2.东北大学冶金学院,沈阳 110819
孙欣(1990—),男,本科,高级工程师; E-mail: dl43794832@163.com
收稿:2025-04-16,
纸质出版:2026-01-30
移动端阅览
孙欣,王鑫伟,曹俊泽等.SiO2对抽锭式电渣渣系析出相和高温结构的影响[J].特殊钢,2026,47(01):69-77.
Sun Xin,Wang Xinwei,Cao Junze,et al.Effect of SiO2 on Precipitation Phases and High-temperature Structures of Slags for Drawing-ingot-type Electroslag Remelting[J].Special Steel,2026,47(01):69-77.
孙欣,王鑫伟,曹俊泽等.SiO2对抽锭式电渣渣系析出相和高温结构的影响[J].特殊钢,2026,47(01):69-77. DOI: 10.20057/j.1003-8620.2025-00110.
Sun Xin,Wang Xinwei,Cao Junze,et al.Effect of SiO2 on Precipitation Phases and High-temperature Structures of Slags for Drawing-ingot-type Electroslag Remelting[J].Special Steel,2026,47(01):69-77. DOI: 10.20057/j.1003-8620.2025-00110.
抽锭式电渣重熔工艺具备生产效率高与铸锭成材率高的显著优势。然而在抽锭过程中因结晶器和铸锭之间存在相对移动,由此会产生较强的剪切力。因此,常出现由于渣皮强度不足而引发的漏钢以及漏渣事故。试验以常规电渣重熔所采用的渣系作为基础,加入不同含量的SiO
2
,测定熔渣的黏度和熔点,分析了不同含量的SiO
2
对熔渣析出相和高温结构的影响,并对1%
w
[SiO
2
]的熔渣在不同剪切力作用下的析出相和高温结构进行测定。研究结果表明:熔渣熔点与
w
[SiO
2
]成正比关系,黏度及其转折温度与之成反比关系。
w
[SiO
2
]增加时,熔渣的黏流活化能从26.4 kJ/mol增加到148.56 kJ/mol并在3%
w
[SiO
2
]时达到最大值153.8 kJ/mol;高温析晶相以CaF
2
和Mg
2
AlO
4
为主,在
w
[SiO
2
]为5%时开始析出含硅物相,熔渣网状结构稳定性的提高得益于[Si-O]四面体结构,[Si-O]结构逐渐由Q
0
和Q
3
转变为Q
0
、Q
1
、Q
2
;向熔渣施加一定的剪切力会促进含硅物相的析出,但随着剪切力的增大含硅相消失,析晶相种类保持不变;同时剪切力的增加对熔渣中[Si-O]结构向Q
3
转变提供正面作用,Q
0
、Q
1
转变为结构更复杂的Q
2
、Q
3
,使得熔渣聚合度保持稳定,具备稳定的冶金特性。
The consumable electrode electroslag remelting using the withdrawal ingot method has the advantages of high production efficiency and high yield rate of ingot. However, due to the relative movement between the mold and the ingot, relatively strong shearing forces are generated, resulting in steel leakage and slag leakage accidents frequently occurring during the ingot withdrawal process because of the insufficient strength of the slag crust. In this study, based on the conventional slag system for electroslag remelting, different contents of SiO
2
were added to the slag to determine the viscosity and melting point of the slag. The effects of different contents of SiO
2
on the precipitated phase and high temperature structure of the slag were analyzed. The precipitated phase and high temperature structure of 1%
w
[SiO
2
] slag under different shear forces were measured. The results show that with the increase of
w
[SiO
2
] the melting point of the slag increases, while the viscosity and its transition temperature decrease, and the viscoelastic activation energy of the slag increases from 26.4 kJ/mol to 148.56 kJ/mol and reaches a maximum of 153.8 kJ/mol at 3%
w
[SiO
2
]. The high temperature crystallization phases are mainly CaF
2
and Mg
2
AlO
4
, and the silicon-containing phase begins to precipitate when the
w
[SiO
2
] is 5 %. The [Si-O] tetrahedral structure
improves the stability of the network structure of the slag, and the [Si-O] structure gradually changes from Q
0
and Q
3
to Q
0
, Q
1
and Q
2
. Applying a certain shear force to the slag will promote the precipitation of silicon-containing phases, but with the increase of shear force, the silicon-containing phases disappear and the types of crystallization phases remain unchanged. At the same time, the increase of shear force provides a positive effect on the transformation of
[Si-O] structure to Q
3
in the slag. Q
0
and Q
1
are transformed into Q
2
and Q
3
with more complex structure, which makes the polymerization degree of the slag stable and has stable metallurgical characteristics.
李正邦 . 21世纪电渣冶金的新进展 [J]. 特殊钢 , 2004 , 25 ( 5 ): 1 - 5 .
李正邦 . 电渣冶金的发展历程、现状及趋势 [J]. 材料与冶金学报 , 2011 , 10 ( S1 ): 1 - 7 .
Wang F , Xiong Y L , Li B K , et al . A sequence-coupled mathematical model of magneto-hydrodynamic two-phase flow and heat transfer in a triplex-electrode electroslag remelting furnace [J]. Steel Research International , 2019 , 90 ( 6 ): 1800481 .
Ren N , Li B K , Li L M , et al . Numerical investigation on the fluid flow and heat transfer in electroslag remelting furnace with triple-electrode [J]. Ironmaking & Steelmaking , 2018 , 45 ( 2 ): 125 - 134 .
Mills K C . Structure and properties of slags used in the continuous casting of steel: Part 2 specialist mould powders [J]. ISIJ International , 2016 , 56 ( 1 ): 14 - 23 .
Mills K C , Fox A B . The role of mould fluxes in continuous casting-so simple yet so complex [J]. ISIJ International , 2003 , 43 ( 10 ): 1479 - 1486 .
李 星 , 耿 鑫 , 姜周华 , 等 . 电渣重熔高温合金渣系对冶金质量的影响 [J]. 钢铁 , 2015 , 50 ( 9 ): 41 - 46 .
臧喜民 , 姜周华 , 张天彪 , 等 . 电渣连铸技术的开发 [J]. 中国冶金 , 2006 , 16 ( 3 ): 10 - 13 .
Shi C B , Li J , Cho J W , et al . Effect of SiO 2 on the crystallization behaviors and in-mold performance of CaF 2 -CaO-Al 2 O 3 slags for drawing-ingot-type electroslag remelting [J]. Metallurgical and Materials Transactions B , 2015 , 46 ( 5 ): 2110 - 2120 .
Liu Y , Wang Y , Li G Q , et al . Investigation on the structure, fluoride vaporization and crystallization behavior of CaF 2 -CaO-Al 2 O 3 -(SiO 2 ) slag for electroslag remelting [J]. Journal of Thermal Analysis and Calorimetry , 2020 , 139 ( 2 ): 923 - 931 .
Zheng D L , Ma G J , Zhang X , et al . Effect of CaO/Al 2 O 3 on structure, viscosity, and surface tension of electroslag remelting-type CeO 2 -bearing slag [J]. Journal of Iron and Steel Research International , 2023 , 30 ( 4 ): 717 - 725 .
Xu J F , Su L J , Chen D , et al . Experimental investigation on viscosity of CaO-MgO (-Al 2 O 3 )-SiO 2 slags and solid-liquid mixtures [J]. Journal of Iron and Steel Research International , 2015 , 22 ( 12 ): 1091 - 1097 .
Zhou W B , Li T L , Lan D , et al . Influence of TiO 2 , Al 2 O 3 , and basicity on viscosity and structure of high titanium-bearing blast furnace slag [J]. Materials , 2023 , 16 ( 7 ): 2575 .
Geng X , Tao X R , Jiang Z H , et al . Effect of B 2 O 3 on ESR slag viscosity for remelting 9CrMoCoB steel [J]. ISIJ International , 2022 , 62 ( 6 ): 1070 - 1077 .
Wang Z J , Sohn I . Experimental determination of phase equilibria in the CaO-BaO-SiO 2 -12 mol pct. Al 2 O 3 -13 mol pct. MgO system at 1573 K and 1623 K [J]. Journal of the American Ceramic Society , 2019 , 102 ( 9 ): 5632 - 5644 .
Min Y , Shi Z X , Liu C J . Ultrasonic depolymerization of Li 2 O-Na 2 O-SiO 2 type silicate melt [J]. Ultrasonics Sonochemistry , 2017 , 39 : 727 - 732 .
Ma N , You J L , Lu L M , et al . Micro-structure studies of the molten binary K 3 AlF 6 -Al 2 O 3 system by in situ high temperature Raman spectroscopy and theoretical simulation [J]. Inorganic Chemistry Frontiers , 2018 , 5 ( 8 ): 1861 - 1868 .
Jiang C H , Li K J , Zhang J L , et al . The effect of CaO(MgO) on the structure and properties of aluminosilicate system by molecular dynamics simulation [J]. Journal of Molecular Liquids , 2018 , 268 : 762 - 769 .
Mysen B O , Finger L W , Virgo D , et al . Curve-fitting of Raman spectra of silicate glasses [J]. American Mineralogist , 1982 , 67 : 686 - 695 .
Tarte P . Infra-red spectra of inorganic aluminates and characteristic vibrational frequencies of AlO4 tetrahedra and AlO6 octahedra [J]. Spectrochimica Acta Part A: Molecular Spectroscopy , 1967 , 23 ( 7 ): 2127 - 2143 .
McMillan P F , Petuskey W T , Coté B , et al . A structural investigation of CaO-Al 2 O 3 glasses via 2 7Al MAS-NMR [J]. Journal of Non-Crystalline Solids , 1996 , 195 ( 3 ): 261 - 271 .
Lin S L , Hwang C S , Lee J F . Structures of CeO 2 -Al 2 O 3 -SiO 2 glasses [J]. Japanese Journal Of Applied Physics Part 1-Regular Papers Short Notes & Review Papers , 1996 , 35 ( 7 ): 3975 - 3983 .
Kim T S , Park J H . Structure-viscosity relationship of low-silica calcium aluminosilicate melts [J]. ISIJ International , 2014 , 54 ( 9 ): 2031 - 2038 .
Leekes G , Nowack N , Schlegelmilch F . Dissolution of water vapour in ESR-slags of the systems CaO-Al 2 O 3 and CaF 2 -CaO-Al 2 O 3 by application of Fourier-Transform-Infrared-Spectroscopy [J]. Steel Research , 1988 , 59 ( 9 ): 406 - 416 .
Mysen B O , Virgo D , Scarfe C M . Relations between the anionic structure and viscosity of silicate meltsa raman spectroscopic study [J]. American Mineralogist , 1980 , 65 ( 7-8 ): 690 - 710 .
Shi C B , Zheng D L , Shin S H , et al . Effect of TiO 2 on the viscosity and structure of low-fluoride slag used for electroslag remelting of Ti-containing steels [J]. International Journal of Minerals, Metallurgy, and Materials , 2017 , 24 ( 1 ): 18 - 24 .
González P , Serra J , Liste S , et al . Raman spectroscopic study of bioactive silica based glasses [J]. Journal of Non-Crystalline Solids , 2003 , 320 ( 1-3 ): 92 - 99 .
Huang C , Behrman E C . Structure and properties of calcium aluminosilicate glasses [J]. Journal of Non-Crystalline Solids , 1991 , 128 ( 3 ): 310 - 321 .
李作伟 , 耿 鑫 , 姜周华 , 等 . SiO 2 对抽锭式电渣重熔渣系物性参数的影响 [J]. 钢铁 , 2023 , 58 ( 12 ): 54 - 61 .
0
浏览量
2
下载量
0
CSCD
0
CNKI被引量
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621