Effect of BaO and Li₂O on Basic Characteristics of Mold Fluxes with Different Basicity

• Autorzy: Wang Haichuan , Sheng Guang-ye , Wang Haijun , Liu Hong-meng , Wu Ting

Identyfikatory

DOI

10.24425/amm.2023.146208

• Języki publikacji: EN

Abstrakty

EN

Lubrication and heat transfer control are two significant functions of mold fluxes. In order to coordinate the contradiction between lubrication and heat transfer, the effects of BaO and Li₂O on basic characteristics of CaO-SiO₂ based mold fluxes were studied by hemispherical melting temperature instrument, rotating cylinder method, X-ray diffractometer (XRD) in present study. The results show that the melting temperature and viscosity at 1300°C all represent a downward trend with BaO and Li₂O enhancement at different basicity, and the break temperature decrease with BaO addition while decrease and then increase with Li₂O addition, which illustrates that Li₂O content should be no more than 0.8 wt% for the purpose of lubrication. Meanwhile, to ensure a sufficient thickness of the liquid slag film and avoid discontinuity of the liquid slag film, the BaO content is better to be 10 wt% with low melting temperature and viscosity. The main crystalline phase in the mold fluxes is cuspidine (3CaO·2SiO₂·CaF₂), and the crystallization ratio rises sharply when basicity increased to 1.65. For better deal with the contradiction of lubrication and heat transfer, the mold fluxes composition w(BaO) = 10 wt%, w(Li₂O) = 0.8 wt%, R ≥1.65 is reasonable, which has a profound impact on high crystallization and lubricity mold fluxes.

Słowa kluczowe

EN

mold fluxes; lubrication; heat transfer

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 4
• Strony: 1421--1428
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wzory

Twórcy

autor

Wang Haichuan

• Anhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, 243032, China
• Anhui University of Technology, Key Laboratory of Metallurgical Emission Reduction & Resource Recycling (Ministry of Education), Anhui, Ma’anshan, 243002, China

• https://orcid.org/0000-0002-3322-7290

autor

Sheng Guang-ye

• Anhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, 243032, China

• https://orcid.org/0000-0003-4106-7722

autor

Wang Haijun

• Anhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, 243032, China
• Anhui University of Technology, Key Laboratory of Metallurgical Emission Reduction & Resource Recycling (Ministry of Education), Anhui, Ma’anshan, 243002, China

• https://orcid.org/0000-0002-4809-7804

autor

Liu Hong-meng

• Anhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, 243032, China

• https://orcid.org/0000-0002-0981-230X

autor

Wu Ting

• Anhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, 243032, China
• Anhui University of Technology, Key Laboratory of Metallurgical Emission Reduction & Resource Recycling (Ministry of Education), Anhui, Ma’anshan, 243002, China

• https://orcid.org/0000-0003-1691-984X

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Uwagi

1. The authors would like to deeply appreciate the fund support from the Natural Science Foundation of Anhui Provincial Education Department (KJ2021A0358) and the College Students Innovation and Entrepreneurship Training Program in Anhui University of Technology (2021008Y).

2. Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)