(1. 湖北汽車工業(yè)學院 材料科學與工程學院，十堰 442002； 2. 北京科技大學 冶金與生態(tài)工程學院，北京 100083)
摘 要: 根據(jù)熱彈性力學理論，建立渣皮厚度可變的銅冷卻壁熱-力耦合應力場分布計算模型，從銅冷卻壁在不同渣皮厚度條件下的變形情況這一角度分析煤氣溫度、冷卻制度、鑲磚材質(zhì)和爐渣性質(zhì)等多種因素對銅冷卻壁壽命的影響規(guī)律。計算結果表明：冷卻壁本體變形隨煤氣溫度的升高而線性增加；隨著渣皮厚度的增大，冷卻壁本體的變形量先減小后增大，渣皮厚度約為20 mm時冷卻壁本體變形最小；冷卻水流速的增大對降低冷卻壁變形量有顯著作用，而冷卻水溫度的升高會使冷卻壁本體的變形量顯著增大；提升鑲磚熱導率可明顯減小冷卻壁本體變形，而增大鑲磚熱膨脹系數(shù)會明顯增加壁體變形量；爐渣熱膨脹系數(shù)越小，銅冷卻壁本體變形越小。
關鍵字: 銅冷卻壁；渣皮；熱-力耦合；熱變形；ANSYS
（1. School of Materials Science and Engineering, Hubei University of Automotive Technology, Shiyan 442002, China; 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China）
Abstract:A thermal-mechanical coupling model of copper cooling stave with variable slag coating was founded based on the thermal elastic mechanics, and the influences of the gas temperature, the cooling system, the materials of insert bricks, and the properties of the slag on the stave life were analyzed from the view point of the deformation of stave body. The results show that the deformation of stave body increases linearly with the increase of gas temperature; the deformation of stave body decreases at first and then increases when the slag coating thickness increases, and the deformation of the stave body has the minimum when the slag coating thickness is 20 mm; the increase of water velocity has a significant influence on reducing deformation of stave body, while increase of cooling water temperature incurs conspicuous growth of deformation; the increase of the heat conductivity of cast-in bricks and the decrease of the thermal expansion coefficient of slag significantly reduce the deformation of stave body while the increase of the thermal expansion coefficient of cast-in bricks obviously enlarges the deformation of stave body.
Key words: copper cooling stave; slag coating; thermal-mechanical coupling; thermal deformation; ANSYS
