| 钙处理对430不锈钢板坯夹杂物的影响 |
| |
| 引用本文： | 喻大刚,陈兴润,程云霞,潘吉祥.钙处理对430不锈钢板坯夹杂物的影响[J].中国冶金,2017,27(10):15-18. |
| |
| 作者姓名： | 喻大刚 陈兴润 程云霞 潘吉祥 |
| |
| 作者单位： | 酒钢集团宏兴钢铁股份有限公司， 甘肃 嘉峪关 735100 |
| |
| 摘 要： | 通过热力学计算分析了430铁素体不锈钢钙处理后在生成液态夹杂物区间内钢中钙质量分数和铝质量分数的关系,并对430铁素体不锈钢未采用钙处理和采用钙处理板坯中夹杂物类型、数量进行了对比,分析了钙处理夹杂物变性过程。结果表明,精炼过程喂入硅钙线可以得到理想的钙处理效果。钙处理后430钢水中高熔点的Al_2O_3和低变性的CaO-SiO_2-Al_2O_3-MgO夹杂物得到良好变性,夹杂物数量比未采用钙处理时明显减少,夹杂物尺寸都小于15μm。CaO和Al_2O_3两者通过发生化学反应变性为低熔点的液态夹杂物。
|
| 关 键 词： | 430铁素体不锈钢 钙处理 夹杂物 变性 |
Effect of calcium treatment on inclusions in 430 stainless steel slabs |
| |
| YU Da gang,CHEN Xing run,CHENG Yun xia,PAN Ji xiang.Effect of calcium treatment on inclusions in 430 stainless steel slabs[J].China Metallurgy,2017,27(10):15-18. |
| |
| Authors: | YU Da gang CHEN Xing run CHENG Yun xia PAN Ji xiang |
| |
| Affiliation: | （Hongxing Iron and Steel Co., Ltd., Jiuquan Iron and Steel Group Corporation, Jiayuguan 735100, Gansu, China |
| |
| Abstract: | The relationships between the calcium mass fraction and the aluminum mass fraction in liquid inclusion region in steel after calcium treatment for 430 ferritic stainless steel was analyzed by the thermodynamic calculation. The inclusion types and number in 430 stainless steel without and with calcium treatment were compared, and the modification mechanism of inclusions was analyzed．The results showed that when calcium silicon line was added during LF, the ideal calcium treatment effect can be obtained. The Al2O3 and CaO SiO2 Al2O3 MgO inclusion can be modified into inclusions which were liquid at steelmaking temperature after calcium treatment. The inclusion size was less than 15 μm, and the inclusion number was decreased obviously compared with the number without calcium treatment. The CaO and Al2O3 reacted with each other and finally formed liquid calcium aluminates. |
| |
| Keywords: | 430 ferritc stainless steel calcium treatment inclusion modification |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国冶金》浏览原始摘要信息 |
|
点击此处可从《中国冶金》下载全文 |
|
