Thermal Analysis on a Half Cylinder Shell of 42C Rmo Steel With Non-Linear Surface Heat-Transfer Coefficients During Rapid Cooling
Cheng Heming(1), Huang Xieqing(2), Fang Mengxia(1), Xie Jianbin(1)
(1, Kunming University of Science and Technology, 650093, Kunming, P.R.China)
(2 Xi'an Jiaotong University, 710049, Xi'an, P.R.China)

Abstract: Non-linear surface heat-transfer coefficient is obtained by experimental and numerical methods and the CCT diagram is simulated by mathematical transformation. The volume fractions of constituent of austenite, perisite, bainte and martensite in continuous cooling are calculated, temperature field with non-linear surface heat-transfer coefficients is calculated using finite element technique. In numerical calculation, different values of the non-linear surface heat-transfer coefficients between inner surface and outside surface of the shell are taken account of and the thermal physical properties are treated as the functions of temperature. The experimental results of temperature field coincide with numeral solutions. Finally, the thermal stress is calculated by finite element method.
Keywords: surface heat-transfer coefficient, half cylinder shell, and thermal analysis.