A Study on Non-Metallic Inclusion in 304 Stainless Steel Produced by Twin Roll Thin Strip Casting

黄福祥; 王盛林; 张炯明; 王新华; 方园; 于艳

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A Study on Non-Metallic Inclusion in 304 Stainless Steel Produced by Twin Roll Thin Strip Casting

更新时间：2026-01-21

- A Study on Non-Metallic Inclusion in 304 Stainless Steel Produced by Twin Roll Thin Strip Casting
- Special Steel Vol. 28, Issue 4, Pages: 33-35(2007)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 宝钢集团有限公司技术中心前沿技术研究所,上海,201900
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：09 March 2007，
  
  Online First：06 January 2023，
  
  Published：06 January 2007
- 稿件说明：
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黄福祥, 王盛林, 张炯明, et al. A Study on Non-Metallic Inclusion in 304 Stainless Steel Produced by Twin Roll Thin Strip Casting[J]. Special Steel, 2007, 28(4): 33-35.
DOI：

黄福祥, 王盛林, 张炯明, et al. A Study on Non-Metallic Inclusion in 304 Stainless Steel Produced by Twin Roll Thin Strip Casting[J]. Special Steel, 2007, 28(4): 33-35. DOI：

摘要

采用扫描电镜(SEM)和透射电镜(TEM)对双辊薄带连铸304不锈钢中的大型夹杂物和微细夹杂物进行了研究。结果表明

薄带中的夹杂物一般呈球形

主要为CaO-MnO-Al

-SiO

组成的复杂氧化物和硫化锰;薄带中除了有少量的50μm大型氧化物夹杂外

其余均为≤10μm细小的氧化物和硫化物夹杂;与传统连铸相比

双辊薄带连铸304不锈钢薄带中的细小氧化物夹杂尺寸明显减小

数量相对增多;在钢液凝固过程中形成最后聚集在晶界夹杂的直径大多小于0.7μm。

Abstract

Large inclusions and ultra-fine inclusions in 304 stainless steel thin strip produced by twin roll strip casting have studied by scanning and transmission electron microscope. Results indicated that inclusions in thin strip were spheroidal compound oxide inclusions with ingredient CaO-MnO-Al

-SiO

and manganese sulphide inclusion; besides minor 50μm large inclusions

majority of inclusions in thin strip were less than 10 μm fine oxides and sulfides; in contrast to traditional concasting

size of inclusions in thin strip obviously decreased

of which number relatively increased; diameter of inclusions formed in solidification of liquid steel and finally accumulated in grain boundary was mainly less than 0.7 μm.

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