Numerical simulation of Thermal Residual Stress in Iron-Based Alloy in Zinc Liquid
In Hot-dip galvanizing, due to the formidable working condition, The temperature gradient caused by the temperature difference between inner and outer of the outer shell generates thermal residual stresses in the heating pipe. Cracks are likely to be initiated when heating or cooling, which will reduce its lifespan, The residual thermal stresses of Iron-Based Alloy in Zinc Liquid were analysized by finite element method (FEM), Basing on the analysis, substitute materials that can prolong the lifespan of the internal heater are pursued.. The results indicate that the different distribution of temperature in radial direction is one of the most important factors causing the thermal residual stresses. When heating, the power of the heater, the thickness of the wall, the temperature differences between inner and outer wall, The results also indicate that the stresses will increase as the uneven temperature. At the same time, tensile stress occurs at the outer surfaces, while compressive stress exists at the inner ones. The results are opposite when cooling. With the thickness of outer shell increaseing, the residual stress is raise greatly, so the thickness of outer pipe is also play an important role in the initiation of the residual thremal stresses.
the outer shell of internal heater finite element method (FEM) temperature gradient thermal residual stress
WU Jian-jun PANG Xiao-ping
School of Material Science and Engineering, Hebei University of Technology 300130, China
国际会议
第七届亚太镀锌大会(The 7th Asia Pacific General Galvanizing Conference)(7th APGGC)
北京
英文
267-272
2007-09-14（万方平台首次上网日期，不代表论文的发表时间）