中碳高钛合金钢水口结瘤形成机理的研究  

Study on the Forming Mechanism of Nozzle Clogging for Medium Carbon High Titanium Alloy Steel

作　　者：韩蕾蕾 

机构地区：[1]山东钢铁股份有限公司莱芜分公司,山东莱芜271104

出　　处：《工业加热》2015年第5期34-36,共3页Industrial Heating

基　　金：国家自然科学基金资助项目(51374021)

摘　　要：针对中碳高钛合金钢钢水浇注过程中形成的水口结瘤物进行了机理研究和控制方法分析。扫描电镜检测结果显示,结瘤物主要是由Ti Ox-Al2O3-Mg O矿相组成,部分结瘤物掺杂Ti N以及冷铁等物质。利用热力学软件FACTSAGE进行计算,结果表明1 823 K下,将中碳高钛合金钢钢水中w(Al)降低到48×10-6以下或升高w(Ti)至620×10-6以上,可将镁铝尖晶石变性为液态的Ti Ox-Al2O3-Mg O夹杂物,从而提高钢水可浇性。The forming mechanism of nozzle clogging for medium carbon high titainium and its improved method have been studied in this paper. The results of SEM-EDS indicated that clogs were composed of Ti Ox-Al2O3-Mg O with Ti N and chill. The spinel will be changed into liquid inclusion Ti Ox-Al2O3-Mg O and the castability of steel will be improved by reducing w（Al） to below 48×10-6or increasing w（Ti） to above 620×10-6at 1 823 K based on the thermodynamic results of FACTSAGE.

关 键 词：钛元素 水口结瘤 镁铝尖晶石 形成原因 

分 类 号：TF762[冶金工程—钢铁冶金]