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Melting Characteristics of Multipiece Steel Scrap in Liquid Steel

机译：液钢中多线钢废料的熔化特性

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摘要

Based on the analysis of single-bar melting experiments in a previous article,1) the effect of spacing between the steel bars on the agglomeration of steel shells around the steel bars and the melting rate of steel scrap samples was studied in this article. In addition, a calculation model of melting time of steel scrap in the electric arc furnace under different bulk densities and random stacking conditions was also established. The two-bar melting experimental results show that the thermal simulation results are basically consistent with the numerical simulation results. And an increase in the spacing between the steel bars up to 6 mm and the preheating temperature of the steel scrap samples up to 1 073 K, can greatly reduce or eliminate the adverse effect of the agglomeration of steel shells around the steel bars on the melting process, thus greatly reducing the melting time. The multibar melting experimental results show that an increase in the porosity is beneficial to the melting of steel scrap samples, and when the porosity reached 0.84 and above, the melting time of multibar samples is close to that of an individual steel bar. In addition, the calculation model can accurately predict the melting time of the steel scrap in the electric arc furnace.
机译：基于先前制品中单条熔化实验的分析，1）在本文中研究了钢筋围绕钢筋围绕钢筋附聚的钢筋与钢筋熔化速率之间的间距的影响。此外，还建立了在不同散装密度和随机堆叠条件下电弧炉中钢废料熔炼时间的计算模型。双杠熔化实验结果表明，热仿真结果与数值模拟结果一致。并且钢筋之间的间距增加到6毫米，钢废料样品的预热温度高达1 073 k，可以大大减少或消除钢筋附近熔化的钢筋附近的不利影响工艺，从而大大降低了熔化时间。多瓦熔融实验结果表明，孔隙率的增加有利于钢废料样品的熔化，并且当孔隙率达到0.84及以上时，多焊接物样的熔化时间接近单个钢筋的熔点。另外，计算模型可以精确地预测电弧炉中钢废料的熔断时间。

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  • 来源
    《ISIJ international》 |2021年第1期|190-199|共10页
  • 作者

    Xiaojun XI; Sai CHEN; Shufeng YANG; Maolin YE; Jingshe LI;

  • 作者单位

    School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083 P.R. China;

    School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083 P.R. China;

    School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083 P.R. China;

    School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083 P.R. China;

    School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 P.R. China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083 P.R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    two-bar and multibar melting; thermal simulation experiment; numerical simulation; electric arc furnace;

    机译：双杠和多瓦熔化;热仿真实验;数值模拟;电弧炉;
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