Modeling service process of ductile cast iron cooling staves of blast furnace using 3-dimensional finite element method
Two kinds of inset brick ductile cast iron cooling staves including single-layer cooling staves and double-layer cooling staves were used on one blast furnace.The inside of single-layer cooling stave has four vertically-installed cooling pipes in parallel.Based on the structure of single-layer cooling stave,an S-shaped pipe equipped with an isolated water cooling system is added to the double-layer cooling stave.With the help of finite element analysis software Abaqus,two kinds of 3 -dimensional finite element models were developed separately on the basis of actual size to calculate the temperature and stress distribution of single-layer cooling staves and double- layer cooling staves at the beginning and middle of the service.The results show that as for single-layer cooling staves,the maximum tensile stress and compressive stress at the middle of service are obviously smaller than that at the beginning of service,while as for double-layer cooling staves,it is opposite.At either the beginning or the middle of service,the maximum tensile stress and compressive stress of the double-layer cooling staves are much smaller than that of the single-layer cooling staves.Furthermore,the tensile stress of the water pipe installed in the single-layer cooling staves is bigger than its tensile strength at the middle of service,while the tensile stress of the water pipe in the double-layer cooling staves is smaller than its tensile strength.Therefore,the service life of double-layer cooling staves is much longer than that of single-layer cooling staves.The temperature results of double-layer cooling staves at the beginning and middle of service are agreed with the actual data of blast furnace.These verify the accuracy and reliability of the model.
blast furnace ductile cast iron cooling stave thermal stress numerical simulation
LU Yu DU Ping ZHANG Mingxing
Institute Research of Iron & Steel of Sha-Steel,Zhangjiagang 215625,Jiangsu,China
国内会议
上海
英文
1-8
2013-06-01（万方平台首次上网日期，不代表论文的发表时间）