Thermo-mechanical Analysis on Deformation Behavior in Continuous Casting BB2 Beam Blank with Section Size of 292mm by 200mm by 85mm
Aiming at casting two different specifications with the same beam blank caster,a study was conducted to develop a thermo-mechanical model of the solidifying steel shell in the BB1/BB2 beam blank casting mould by applying realistic boundary conditions and material properties.The deformation behavior of solidified shell were successfully predicted by the thermal-mechanical model.The shell thickness at the mould exit was compared with BB1 beam blank castings after steel breakout accident to demonstrate sufficient accuracy of the developed model to solve practical problem such as the optimization of mould taper,design of water channel.The analysis results show that air gaps form at the flange tip corners in the initial stage of solidification which reduce the heat flow and give rise to hot spots at the flange tip corners.To avoid surface cracks in the web and fillet regions and internal cracks in the flange-tip region,the suggestion for the mould taper and water channel design together with the primary cooling intensity were proposed.To investigate the allowed maximum casting speed and corresponding secondary cooling parameters while casting smaller cross-section beam blank in the same caster with identical roll arrangement and cooling loop design,separate models were developed to simulate thermal condition and deformation behaviour of the solidifying steel shell in the following secondary cooling zone,considering the complex roll arrangement and cooling condition as the beam blank moved through the caster.These analysis results have been validated with plant measurement.
thermomechanical analysis deformation behavior BB2 beam blank solidification analysis
LIU Ke SUN Qisong CHEN Tao DI Quankang XU Bingwei ZHOU Jianbo ZHANG Jiaquan
Special Steel Technology Dept.,Shougang Research Institute of Technology,Beijing 100043,China Shougang Changzhi Iron & Stel Co.,Ltd,Changzhi 043000,Shanxi,China School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beij
国际会议
STEELSIM2017(第七届冶金过程及钢铁材料模拟及仿真国际会议)
青岛
英文
80-84
2017-08-16（万方平台首次上网日期，不代表论文的发表时间）