论文部分内容阅读
安阳钢铁公司炼铁厂3号高炉连续生产九年多,自一九八六年十月份以后,在出铁口以下部位,钢壳(16mm)开裂——补焊多次,一九八七年一月中旬钢壳又一次开裂,裂纹长度约1.5m,最大缝宽10mm;四月中旬原补焊处再次开裂,有煤气洩漏。每次开裂裂纹均沿炉体纵向扩展。经多方面分析开裂原因,认为是由于碱金属蒸气通过耐火砖的缝隙和孔隙渗透凝结,这些碱金属不断寓积使炉壳胀裂。为改进炉体设计,我们根据断裂力学分析和薄壁压力容器安全设计的考虑,计算了
No.3 blast furnace of Anyang Iron and Steel Company Iron and Steel Co., Ltd. Continuous production for more than nine years, from October 1986 onwards, below the taphole, the steel shell (16mm) cracking - repair welding several times, in 1987 In mid-January the steel shell once again cracked, the crack length of about 1.5m, the maximum slit width 10mm; in mid-April the original weld again cracking, gas leaks. Each crack crack along the longitudinal expansion of the furnace. After many reasons analysis of cracking, that is due to the alkali metal vapor through the cracks and pores of refractory brick infiltration and condensation, the continuous accumulation of these alkali metals make the shell burst. In order to improve the design of the furnace, based on the fracture mechanics analysis and the thin-walled pressure vessel safety design considerations, calculated