板坯连铸结晶器的热弹塑性力学分析

AN ANALYSIS OF THERMAL ELASTOPLASTIC BEHAVIOR OF CONTINUOUS CASTING SLAB MOLD

建立了板坯连铸结晶器三维有限元热-弹塑性力学模型,模拟了生产过程中铜板结晶器的变形和热应力分布,考察了铜板厚度、水槽深度、镍层对板坯连铸结晶器铜板变形和热应力的影响规律．结果表明,宽面和窄面中心的最大变形量分别为0．245和1．01 mm,减少铜板厚度、增大水槽深度有利于降低铜板热面最大变形量与热应力值,而镍层厚度对铜板变形和热应力分布的影响不显著．

Three-dimensional finite-element thermal stress model was established to predict the thermal distortion and stress distribution in a continuous casting slab mold during production. The effects of copper plate thickness, water slot depth and nickel layer thickness on copper plate distortion and stress were investigated. The results show that the maximum distortions of wide and narrow faces of the copper plate are 0.245 mm and 1.01 mm, respectively. During operation, the distortion and thermal stress decrease with decreasing copper plate thickness and increasing water slot depth, while the effects of the thickness of nickel layer coating on the copper plate distortion and thermal stress distribution are not obvious.