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针对武钢炼钢总厂250t转炉托圈配管工艺孔处开裂漏水且反复局部修补无法根治的问题,采用CAE技术对转炉整体进行了热应力仿真分析。仿真结果表明,托圈配管工艺孔处存在应力集中,该处的热应力明显高于托圈的其他部位,是导致该处经常开裂的根本原因。为此,将配管进行了改道设计,改善了托圈的局部结构,降低了托圈的应力集中现象,使该转炉托圈的漏水难题得到了彻底根治。
Aiming at the problem of cracking and leakage at the hole of the piping ring of 250t converter ring in WISCO Steelmaking Plant and the repeated local repair, the CAE technology was used to simulate the thermal stress of the converter in the whole process. The simulation results show that there is stress concentration in the hole of the tubing of the support ring, and the thermal stress there is obviously higher than other parts of the support ring, which is the root cause of frequent cracking in this area. To this end, the piping was diverted to design, improve the local structure of the support ring, reducing the stress concentration of the ring, so that the leakage of the converter ring has been a radical cure.