A Study on Transformation of Inclusions of CaO-Al2O3 -SiO2 -MgO System in Stainless Steel ZG06 Cr13Ni4Mo with EAF-LF-VOD-Casting Flow Sheet

刘剑辉; 朱荣; 李士琦; 董瀚

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A Study on Transformation of Inclusions of CaO-Al2O3 -SiO2 -MgO System in Stainless Steel ZG06 Cr13Ni4Mo with EAF-LF-VOD-Casting Flow Sheet

更新时间：2026-01-21

- A Study on Transformation of Inclusions of CaO-Al2O3 -SiO2 -MgO System in Stainless Steel ZG06 Cr13Ni4Mo with EAF-LF-VOD-Casting Flow Sheet
- Special Steel Vol. 32, Issue 3, Pages: 28-32(2011)
- 作者机构：
  
  1. 钢铁研究总院结构材料研究所,北京,100081
  2. 先进钢铁材料技术国家工程研究中心,北京,100081
  3. 北京科技大学冶金与生态工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：22 November 2010，
  
  Online First：17 October 2022，
  
  Published：17 October 2011
- 稿件说明：
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刘剑辉, 朱荣, 李士琦, et al. A Study on Transformation of Inclusions of CaO-Al2O3 -SiO2 -MgO System in Stainless Steel ZG06 Cr13Ni4Mo with EAF-LF-VOD-Casting Flow Sheet[J]. Special Steel, 2011, 32(3): 28-32.
DOI：

刘剑辉, 朱荣, 李士琦, et al. A Study on Transformation of Inclusions of CaO-Al2O3 -SiO2 -MgO System in Stainless Steel ZG06 Cr13Ni4Mo with EAF-LF-VOD-Casting Flow Sheet[J]. Special Steel, 2011, 32(3): 28-32. DOI：

摘要

对大型水轮机组用超低碳马氏体不锈钢ZG06Cr13Ni4Mo中夹杂物进行了全面的分析和研究。在40 tEAF-LF-VOD-铸造流程的工业试验取样分析的基础上

运用Fact Sage热力学软件

研究了不锈钢冶炼过程中CaO-SiO

-Al

-MgO系夹杂物的转变过程

得到夹杂物的熔点和塑性的变化规律。基于Fact Sage软件的计算

找到合理的夹杂物低熔点塑性控制区域

即在MgO含量为10%的CaO-SiO

-Al

-MgO四元系相图中

夹杂物组分(%)为50～70SiO

、10～20Al

、10～40CaO时

其熔点低于1 280℃。为得到低熔点的夹杂物

工业生产超低碳不锈钢应将脱氧剂Si/Al比控制在2～5。

Abstract

A comprehensive analysis and study on inclusions in ultra-low carbon martensite stainless steel ZG06Crl3Ni4Mo for large scale hydraulic turbine sets has been carried out. Based on sampling analysis in commercial test with 40 t EAF-LF-VOD-casting flow sheet the transformation process of inclusions of CaO-SiO

-Al

-MgO system in the stainless steel during steelmaking is studied by using Fact Sage thermodynamic software to get variation law of melting point and plasticity of the inclusions. According to calculation by Fact Sage software

the reasonable low-melting-point inclusions plasticity control area is foun

d out i. e. in quaternary phase diagram CaO-SiO2-Al2 O3 -MgO with 10% MgO as ingredient of inclusion ( % ) is 50 - 70 SiO

10-20 Al

and 10 〜40 CaO

its smelting point is lower than 1 280 ℃. In order to get low-melting-point inclusions

the silicon/aluminium ratio of deoxidant should be controlled between 2 ~ 5 in commercial production of ultra-low carbon stainless steel.

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