双辊薄带连铸304不锈钢中非金属夹杂物研究

特殊钢 ›› 2007, Vol. 28 ›› Issue (4): 33-35.

双辊薄带连铸304不锈钢中非金属夹杂物研究

黄福祥¹, 王盛林¹, 张炯明¹, 王新华¹, 方园², 于艳²

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

收稿日期:2007-03-09 出版日期:2007-07-01 发布日期:2023-01-06
作者简介:黄福祥(1981-),男，在读博士研究生，从事近终型连铸工艺研究。
基金资助:
国家自然科学基金资助项目(50434040)

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

Huang Fuxiang¹, Wang Shenglin¹, Zhang Jiongming¹, Wang Xinhua¹, Fang Yuan², Yu Yan²

1 School of Metallurgy and Ecology, University of Science and Technology, Beijing 100083;
2 Advanced Technology Institute, Technology Center, Baosteel, Shanghai 201900

Received:2007-03-09 Published:2007-07-01 Online:2023-01-06

摘要/Abstract

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-Al₂O₃-SiO₂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-Al₂0₃-SiO₂and 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.

黄福祥, 王盛林, 张炯明, 王新华, 方园, 于艳 . 双辊薄带连铸304不锈钢中非金属夹杂物研究[J]. 特殊钢, 2007, 28(4): 33-35.

Huang Fuxiang, Wang Shenglin, Zhang Jiongming, Wang Xinhua, Fang Yuan, Yu Yan. 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.