合金鋼中鎂鋁尖晶石夾雜物生成與轉化熱力學

姜桂連; 李京社; 李向東; 王再飛; 林曉川

doi:10.13374/j.issn1001-053x.2009.s1.019

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合金鋼中鎂鋁尖晶石夾雜物生成與轉化熱力學

doi: 10.13374/j.issn1001-053x.2009.s1.019

1. 北京科技大學冶金與生態工程學院, 北京 100083;
2. 天津鋼管集團有限公司煉鋼廠, 天津 300301;
3. 焦作大學, 焦作 454000

基金項目:

中國博士后科學基金資助項目(No.20080430020)

詳細信息

作者簡介:
姜桂連(1964-),男,高級工程師,博士研究生,E-mail:jiangguilian@tpco.cn

計量
- 文章訪問數: 260
- HTML全文瀏覽量: 73
- PDF下載量: 5
- 被引次數: 0
出版歷程
- 收稿日期: 2009-06-30
- 網絡出版日期: 2021-08-09

Thermodynamics on the formation and transformation of MgO·Al₂O₃ inclusions in alloy steel

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Steelmaking Plant, Tianjin Pipe Corporation Ltd., Tianjin 300301, China;
3. University of Jiaozuo, Jiaozuo 454000, China

摘要

摘要: 通過FactSage 6.0熱力學軟件計算,研究了合金鋼中鎂鋁尖晶石(MgO.Al₂O₃)形成和向低熔點復合夾雜物轉化的熱力學條件,以及鈣處理對鋼液成分和夾雜物成分的影響.研究結果表明:鋼中生成鎂鋁尖晶石夾雜物需要鎂的含量較低;當鋼液中溶解鈣的質量分數為1×10^-6時,鎂鋁尖晶石會轉化變成液態的復合夾雜物;隨著鈣加入量的增加,液態復合夾雜物中Al₂O₃和MgO的含量繼續降低,CaO的含量繼續增加,SiO₂的含量較低,基本保持不變;隨著鈣加入量的增加,鋼液中的氧含量會降低,鎂含量增加.
- 合金鋼 /
- 非金屬夾雜物 /
- 鎂鋁尖晶石 /
- 熱力學
Abstract: Thermodynamics on the formation and transformation of spinel inclusions in gas cylinder steel and the effect of calcium treatment on the compositions of molten steel and inclusions were studied by using Factsage 6.0 software. The results show that spinel inclusions will be produced even through the content of magnesium is very low, and the spinel inclusions will transform to liquid complex inclusions when the content of dissolved Ca in the molten steel exceeds 1×10^-6. With the increase of calcium, on one hand, the contents of Al₂O₃ and MgO in the complex inclusion keep decreasing, and the content of CaO increases, but the content of SiO₂ changes a little. On the other hand, the content of oxygen decreases, while the content magnesium increases.
- alloy steel /
- non-metallic inclusions /
- MgO·Al₂O₃ spinel /
- thermodynamics