铁口铸铁冷却壁热态性能研究  

Research on Thermal Properties of Cast Iron Cooling Stave of Taphole

作　　者：石琳[1] 王志刚[2] 

机构地区：[1]内蒙古科技大学数理与生物工程学院,内蒙古包头014010 [2]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《钢铁钒钛》2013年第5期63-68,共6页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金项目(51064019;61263015);内蒙古教育厅研究基金项目(NJ10104)

摘　　要：为了满足高炉对长寿冷却壁的需求,采用ABAQUS有限元编程,对新设计的铁口铸铁冷却壁进行温度、应力场的计算。计算结果显示:开炉初期冷却壁热面最高温度85℃,壁体变形较小;当内衬侵蚀厚度从50 mm增加到1 100 mm时,铁口角部热面温度从87.16℃增加到234.9℃,壁体中部应力从130.3 MPa增加到294.0 MPa,接近铸铁的屈服强度,定位销附近应力大大超过了铸铁的屈服强度。可见,新设计的铁口铸铁冷却壁的冷却薄弱区在铁口角部和中心线附近,应力集中在定位销附近。该研究为改进铁口冷却壁设计和安装铁口冷却壁提供理论依据。In order to satisfy the requirement of blast furnace on longevous cooling stave,the temperature and stress field of the newly designed cast iron cooling stave of taphole are calculated by using the ABAQUS. The results show that the maximum temperature of hot surface is 85. 22 ℃ which leads to small deformation at the early stage of taphole opening. When the lining erosion thickness increases from 50 mm to 1 100 mm,the temperature of the hot surface at the taphole corner increases from 87. 16 ℃ to 234. 9 ℃. In addition,the stress at the middle part of the stave increases from 130. 3 MPa to 294. 0 MPa which is close to the yield strength of the stave,but the stresses at locating pins greatly exceed the yield strength of the stave. The results indicate that the weak cooling area of the newly designed cooling stave is near the taphole corner and central line,and the stress concentrates near the locating pins. This study provides a theoretical basis for improving the design and installation of the cast iron cooling stave of taphole.

关 键 词：高炉 铁口 铸铁冷却壁 温度场 热应力 热变形 

分 类 号：TF573.6[冶金工程—钢铁冶金]