Analysis on Formation and Growth Mechanism of 430 Stainless Steel Mold Powder Slag-Bonding Rim and Control Measures

邸天成; 王杏娟; 刘增勋; 翟俊; 李欢; 朴占龙

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Analysis on Formation and Growth Mechanism of 430 Stainless Steel Mold Powder Slag-Bonding Rim and Control Measures

更新时间：2026-01-21

- Analysis on Formation and Growth Mechanism of 430 Stainless Steel Mold Powder Slag-Bonding Rim and Control Measures
- Special Steel Vol. 43, Issue 5, Pages: 63-67(2022)
- 作者机构：
  
  1. 华北理工大学冶金与能源学院,唐山,063210
  2. 河北省高品质钢连铸技术创新中心,唐山,063000
  3. 太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室,太原,030003
  4. 山西太钢不锈钢股份有限公司技术中心,太原,030003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：07 June 2022，
  
  Online First：29 September 2022，
  
  Published：29 September 2022
- 稿件说明：
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邸天成, 王杏娟, 刘增勋, et al. Analysis on Formation and Growth Mechanism of 430 Stainless Steel Mold Powder Slag-Bonding Rim and Control Measures[J]. Special Steel, 2022, 43(5): 63-67.
DOI：

邸天成, 王杏娟, 刘增勋, et al. Analysis on Formation and Growth Mechanism of 430 Stainless Steel Mold Powder Slag-Bonding Rim and Control Measures[J]. Special Steel, 2022, 43(5): 63-67. DOI：

摘要

针对430不锈钢(0.03～0.04C

16～17Cr)生产过程中渣圈粗大的问题，利用电感耦合等离子体发射光谱仪、半球点熔点仪、粘度仪等设备对比分析了保护渣与渣圈的化学成分与理化性能，通过电子探针观测渣圈的微观结构，探究渣圈形成长大的机理。研究发现：除渣圈C含量0.53%和原渣C含量2.87%外渣圈成分与原渣无明显变化，但粘度与熔点均有所降低，渣圈约70%的区域由烧结相构成，其余30%为结晶相，主要由枪晶石与黄长石构成。烧结相的大量粘结是渣圈形成长大的主要原因。提高保护渣中预熔料比例至70%～80%及炭黑含量≥2%

并在生产中进一步稳定保护渣熔化过程，可有效抑制渣圈长大。

Abstract

In response to the problem of coarse slag-bonding rim in 430 stainless steel production process t the chemical composition and physicochemical properties of the mold powder and slag-bonding rim are compared and analyzed using ICP- OES

hemispherical point melting point meter

viscometer and other equipment

and the microstructure of the slag-bonding rim is observed through the electronic probe to explore the mechanism of slag rim formation and growth. It is found that except C content of slag-bonding rim being 0.53% and C content original mold powder being 2.87%

the composition of the slag-bonding rim and the original mold powder is not much different

but viscosity and melting point are reduced

about 70% of the area of the slag rim consists of the sintered phase

the remaining 30% is the crystalline phase

mainly composed of cuspidine and melilite. The sintered phase of a large number of bonding become a main reason for the formation and growth of the slag rim. Increasing the proportion of pre-melt material to 70%-80% and the content of carbon black in the mold flux ^2%

and further stabilizing the melting process of the mold powder in production

can effectively inhibit the growth of the slag rim.

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