TiO2含量對于CaF2—Al2O3—CaO—MgO—TiO2五元電渣重熔渣系物性參數的影響

師帥; 耿鑫; 姜周華; 李花兵; 徐芳泓; 王立新

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

TiO₂含量對于CaF₂—Al₂O₃—CaO—MgO—TiO₂五元電渣重熔渣系物性參數的影響

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

1. 東北大學冶金學院;
2. 山西太鋼不銹鋼股份有限公司技術中心

基金項目:

山西省煤基重點科技攻關資助項目 (MC2014-03)

國家自然科學基金重點資助項目 (U1760206)

詳細信息

通訊作者:
耿鑫, E-mail:gengx@smm.neu.edu.cn

中圖分類號: TF14;TG132.3
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出版歷程
- 收稿日期: 2018-10-23
- 網絡出版日期: 2023-07-18

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

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

摘要

摘要: 在電渣重熔含鈦高溫合金時, 加入Ti O₂可以抑制合金中鈦的燒損.而渣系的物理性質關系著冶煉的平穩進行和產品的優良品質.本研究以Ca F₂-Al₂O₃-Ca O-MgO為基, 加入不同含量的Ti O₂, 設計了電渣重熔高溫合金用五元渣系, 并研究了Ti O₂含量對渣系熔點、黏度、密度、光學堿度和電導率等物性參數的影響規律.結果表明, 熔點變化范圍為1264¹296℃, 且隨著Ti O₂含量增加, 渣相中低熔點相逐漸生成, 渣系的熔點逐漸降低;渣系中加入Ti O₂可以降低黏度, 且渣系黏度在高溫段 (1350¹550℃) 受溫度變化影響不大, 利于改善電渣重熔鋼錠的表面成形質量;Ti O₂質量分數0⁹%范圍內, 渣系電導率、光學堿度和密度隨Ti O₂含量增多呈降低趨勢, 且密度和光學堿度變化范圍不大, 五組渣系都符合電渣重熔對密度和光學堿度的要求.
- 電渣重熔 /
- 渣系 /
- TiO2 /
- 熔化特性 /
- 黏度
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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參考文獻(16)

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