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首页> 外文会议>The 2nd International symposium on clean steel >Investigations of Inclusion Modification in High Grade Pipeline Steel
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Investigations of Inclusion Modification in High Grade Pipeline Steel

机译：高等级管线钢中夹杂物变质的研究

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摘要

SiCa line was injected into liquid pipeline steel at the end of LF refining as calcium treatment, and samples were taken from liquid steel in ladles before and after calcium treatment, liquid steel in mould, and slabs. Results show that Ca content in steel decreased obviously after calcium treatment with production, and the compositions, morphologies and sizes of inclusions in steel also varied with time; A12O3 inclusions turned to be fine irregular CaS-CaOAl2O3 compound inclusions after calcium treatment, and then to be fine globular CaO-Al2O3 inclusions in mould, and finally changed to be a few larger irregular CaS-CaO-AI2O3 complex inclusions in slabs; reoxidation of molten steel treated by Ca deteriorates effect of calcium treatment. Thermodynamic study revealed that inclusion variations were related with preferential reactions among Ca, AI2O3 and S and precipitation of S in high sulfur capacity CaO-Al2O3 inclusions. New calcium treatment controlling rules were put forward according to the inclusion variations and requirements of pipeline on inclusion controlling.
机译：在进行LF精炼时，将SiCa线注入液态管道钢中进行钙处理，并从钙处理前后的钢包中的钢水，模具中的钢水和板坯中取样。结果表明，生产后钙处理后，钢中钙含量明显降低，钢中夹杂物的组成，形态和尺寸也随时间变化。经过钙处理后，Al 2 O 3夹杂物变成细小的不规则CaS-CaOAl 2 O 3复合夹杂物，然后变成模具中的细小球形CaO-Al 2 O 3夹杂物，最后变成平板中一些较大的较大的不规则CaS-CaO Al 2 O 3复合夹杂物。通过Ca处理的钢水的再氧化会恶化钙处理的效果。热力学研究表明，高硫容量CaO-Al2O3夹杂物中Ca，Al2O3和S的优先反应和S的析出与夹杂物的变化有关。根据夹杂物的变化和管道对夹杂物控制的要求，提出了新的钙处理控制规则。

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  • 来源
  • 会议地点 Shenyang(CN)
  • 作者

    LIUJian-hua; BAOYan-ping; WANG Ming; RENYi; ZHANG Shuai; WANG Shuang;

  • 作者单位

    Institute of Metallurgical Engineering, University of Science and Technology Beijing, Beijing 100083, China;

    Institute of Metallurgical Engineering, University of Science and Technology Beijing, Beijing 100083, China;

    Technology Center of ANSC, Angang Steel Company Limited, Anshan 114001, Liaoning, China;

    Technology Center of ANSC, Angang Steel Company Limited, Anshan 114001, Liaoning, China;

    Technology Center of ANSC, Angang Steel Company Limited, Anshan 114001, Liaoning, China;

    Technology Center of ANSC, Angang Steel Company Limited, Anshan 114001, Liaoning, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 炼钢;
  • 关键词

    pipeline steel; inclusion modification; calcium treatment;

    机译：管线钢；夹杂物修饰钙处理;

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