摘要
为了解决重轨钢生产过程中存在大直径的杂质影响制造一致性和产品品质的难题,对含有杂质的重轨钢断口进行了成分分析、热力学分析及杂质析出机理分析。结果表明:重轨钢生产过程中所包含的杂质包括独立晶石杂质和钙铝酸盐+晶石杂质两大类,独立晶石杂质是在钢水冷却过程中析出的,钙铝酸盐+晶石杂质则是在复合杂质冷却过程中析出的;通过降低原材料中镁、铝杂质含量,减少钢水冷却过程中的氧化等可以有效控制重轨钢生产过程中杂质的产生。
In order to solve the problem of large diameter impurities affecting manufacturing consistency and product quality in the production process of heavy rail steel,composition analysis,thermodynamic analysis,and impurity precipitation mechanism analysis were conducted on the fracture surface of heavy rail steel containing impurities.The results show that the impurities contained in the production process of heavy rail steel include two categories:independent spar impurities and calcium aluminate+spar impurities.Independent spar impurities precipitate during the cooling process of molten steel,while calcium aluminate+spar impurities precipitate during the cooling process of composite impurities.By reducing the impurities of magnesium and aluminum in raw materials and minimizing oxidation during the cooling process of molten steel,the production of impurities in heavy rail steel can be effectively controlled.
作者
郭博洋
Guo Boyang(HBIS Group Hansteel Company,Handan Hebei 056015,China)
出处
《山西冶金》
2025年第3期140-142,共3页
Shanxi Metallurgy
关键词
重轨钢
杂质
独立晶石
钙铝酸盐
钢水冷却
heavy rail steel
impurities
independent crystal
calcium aluminate salt
cooling of molten steel
