中南大学学报（自然科学版）2018，Vol.49Issue(6)：1373-1380,8.DOI:10.11817/j.issn.1672-7207.2018.06.009
冷却工艺对热轧高强带钢残余应力的影响
Effect of cooling process on reducing residual stress of hot rolled high strength strip
摘要
Abstract
In order to analyze the influence of different laminar cooling technology on residual stress of steel strip, a finite element model of strip was established with ABAQUS and FORTRAN named basic model. Multiple experiments were carried out to verify the accuracy of the basic model such as continuous cooling transformation (CCT) test of super cooled austenite and residual stress measurement. The evolution of temperature, phase transformation and stress of the strip during cooling process were expressed with coupling calculation. Other four finite element models were established based on the basic model by changing its initial condition and boundary condition. The new models represented four cooling technology named edge masking, sparse cooling, posterior cooling, and initial transverse temperature difference controlling. The results show that the stress distribution on strips tends to be high compressive stress on edge and tensile stress on middle section. The effect of the four cooling technologies on the residual stress reduction is ranked as initial transverse temperature difference controlling, sparse cooling, edge masking and posterior cooling.关键词
热轧/高强带钢,层流冷却/残余应力/冷却工艺Key words
hot rolled/high strength steel strip/laminar flow cooling/residual stress/cooling technology分类
矿业与冶金引用本文复制引用
邱增帅,何安瑞,邵健,杨荃,夏小明..冷却工艺对热轧高强带钢残余应力的影响[J].中南大学学报（自然科学版）,2018,49(6):1373-1380,8.基金项目
国家自然科学基金资助项目(51404021,51674028)(Projects(51404021, 51674028) supported by the National Natural Science Foundation of China) （51404021,51674028）
