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针对带式烧结机台车的塌腰现象,以430 m~2带式烧结机为例,对烧结机台车塌腰的原因进行了研究。基于fluent软件对烧结矿烧结过程进行模拟,联合workbench中的热分析和结构分析模块进行流固热耦合,得到可靠的台车温度场分布及压力分布。分析台车在单纯的机械载荷和温度载荷作用下的变形及应力分布;针对台车所用材料QT500建立蠕变模型,对台车进行蠕变分析。结果表明,台车在单纯机械载荷和温度载荷作用下产生的变形在弹性变形范围内,是可逆的;台车塌腰现象主要与台车材料的蠕变相关,在蠕变分析中,台车产生了13mm左右的下挠变形。针对台车塌腰现象,设计了拱形台车,仿真结果表明,拱形台车可以降低55.6%的下挠变形,为延长台车寿命提供了理论基础。
In view of the phenomenon of falling of the belt sintering machine trolley, taking the 430 m ~ 2 belt sintering machine as an example, the cause of the falling of the sintering machine trolley is studied. The fluent software was used to simulate the sinter sintering process. The thermal analysis and structural analysis module in the workbench was used to simulate the fluid-structure thermal coupling to obtain reliable temperature distribution and pressure distribution. The deformation and stress distribution of the trolley under simple mechanical and temperature loads are analyzed. A creep model is established for the material QT500 used by the trolley to analyze the creep of the trolley. The results show that the deformation of trolley under the mechanical load and temperature load is reversible within the range of elastic deformation. The trolley collapse phenomenon is mainly related to the creep of trolley material. In creep analysis, Produced about 13mm under the deflection deformation. The arched trolley was designed according to the phenomenon of collapsing the trolley. The simulation results show that the arched trolley can reduce the downward deflection by 55.6%, providing a theoretical basis for prolonging the service life of the trolley.