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Effect of Interfacial Reaction between CaO–BaO–Al2O3‐Based Mold Fluxes and High‐Mn–High‐Al Steels on Fundamental Properties and Lubrication of Mold Flux
Steel Research International ( IF 1.9 ) Pub Date : 2020-04-16 , DOI: 10.1002/srin.201900581
Xiaobo Yan 1 , Huazhi Yuan 1 , Shaoda Zhang 1 , Qiangqiang Wang 1 , Xubin Zhang 1 , Shengping He 1 , Qian Wang 1
Affiliation  

Contact experiments between low‐reactivity CaO–BaO–Al2O3‐based mold fluxes, F1 and F2, and 1.4–2.2 mass% of Al‐containing steels are conducted to investigate the effect of interfacial reaction on mold flux properties and the ultimate limit of reaction duration capacity of the developed mold flux. F1 contains 30.76% CaO, 17.03% Al2O3, 13.40% BaO, and 10.70% SiO2, whereas F2 consists of 27.90% CaO, 23.60% Al2O3, 12.90% BaO, and 9.57% SiO2 of the mass. The pre‐ and post‐experimental wettability of slag samples on steel substrates and the lubrication behavior of slags are discussed. The main results reveal that SiO2, Na2O, and B2O3 in the mold flux react with [Al] in the molten steel at steel–slag interface. The variations in slag properties indicate that both reaction durations between F1 reacting with twinning‐induced plasticity (TWIP) and F2 reacting with 20Mn23AlV steel can last for 40 min, whereas F2 has wider potential applicability for the continuous casting of Al‐containing steels. Interfacial reaction deteriorates the wettability of slag F2 on 20Mn23AlV steel substrate and reduces slag consumption, as equilibrium contact angle increases from approximately 3° to 37°, but slag consumption prediction is 0.22 kg m−2, which is likely to meet the requirement for lubrication.

中文翻译:

CaO–BaO–Al2O3基铸模助熔剂与高锰高铝钢之间的界面反应对铸模助熔剂基本性能和润滑的影响

进行了低反应性CaO–BaO–Al 2 O 3基脱模剂F1和F2与1.4–2.2质量%的含铝钢之间的接触实验,以研究界面反应对脱模剂性能和极限的影响反应时间的限制 F1含有30.76%的CaO,17.03%的Al 2 ö 3,13.40%的BaO,和10.70%的SiO 2,而F2由27.90%的CaO,23.60%的Al 2 ö 3,12.90%的BaO,和9.57%的SiO 2的质量的。讨论了炉渣样品在钢基材上的实验前后的润湿性以及炉渣的润滑行为。主要结果表明,SiO 2渣通量中的Na 2 O和B 2 O 3在钢渣界面处与钢水中的[Al]反应。矿渣性能的变化表明,F1与孪生诱导可塑性(TWIP)反应和F2与20Mn23AlV钢反应之间的反应持续时间可以持续40分钟,而F2在连续铸造含铝钢方面具有更大的潜在适用性。界面反应降低了F20在20Mn23AlV钢基材上的润湿性,并降低了炉渣消耗,因为平衡接触角从大约3°增加到37°,但炉渣消耗预测为0.22 kg m -2,这很可能满足润滑要求。
更新日期:2020-04-16
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