摘要
建立了高炉铸钢冷却壁的有限元模型,确定了冷却壁温度场模拟的初始条件和边界条件。利用有限元软件ANSYS作为分析工具,在不同炉气温度和不同冷却水速的条件下,对铸钢冷却壁的温度场进行模拟。结果表明:冷却水速为1.5 m/s时,铸钢冷却壁在800℃时热面温度为377.1℃,冷热面温差为193.4℃;1 200℃工作条件下,热面温度为557.4℃,冷热面温差为294.7℃。冷却水速为3.0 m/s时,铸钢冷却壁在800℃时热面温度为332.3℃,冷热面温差为208.9℃;1 200℃工作条件下,热面温度为489.4℃,冷热面温差为317.4℃。炉气温度对铸钢冷却壁热面温度和冷热面温度差影响要较冷却水流速大得多。提高冷却水流速虽可降低热面温度,但同时增加了冷热面温差和冷却壁的热应力,对冷却壁的寿命有不利影响。
The finite element mould of the cast steel cooling stave of blast furnace was established and the initial conditions and boundary conditions were determined. The finite element analysis software ANSYS was used to simulate the temperature field of the steel cooling stave under the conditions of the different cooling water rates and different furnace gas temperatures, The result shows that： the temperature of the hot side is 377, 1 ℃ and the temperature difference between the hot side and the cold side is 193.4 ℃ at 800 ℃ of furnace atmosphere temperature, the temperature of the hot side is 557.4 ℃ and the temperature difference between the hot side and the cold side is 294.7 at 1 200 ℃ when the cooling water rate is at 1.5 m/s, the temperature of the hot side is 332.3 ℃ and the temperature difference between the hot side and the cold side is 208, 9 ℃ at 800 ℃, the temperature of the hot side is 489.4 ℃ and the temperature difference between the hot side and the cold side is 317.4 ℃ at 1 200 ℃ when the cooling water rate is at 3.0 m/s, The effect of the furnace atmosphere temperature on the temperature of the hot side and the temperature difference between the hot side and the cold side of the cast steel cooling stave is larger than those of cooling water rate. Although the increase of the cooling water rate can decrease the temperature of the hot side, the thermal stress of cooling stave and the temperature difference between the hot side and the cold side increase as well, which is harmful to the service life of cooling stave.
出处
《铸造技术》
EI
CAS
北大核心
2006年第8期851-854,共4页
Foundry Technology
关键词
铸钢冷却壁
温度场
数值模拟
BF cast steel cooling staves
Temperature field
Numerical simulation
