中国机械工程2017，Vol.28Issue(10)：1232-1237,6.DOI:10.3969/j.issn.1004-132X.2017.10.016
基于高温蠕变特性的连铸坯新矫直技术
New Straightening Technology of Continuous Casting Slabs Based on High-temperature Creep Properties
摘要
Abstract
A new straightening technology where the continuous casting slabs might be straight-ened by full using of high-temperature creep properties was proposed based on the straightening tech-nologies that widely used currently.The new straightening curves were designed herein where the cur-vatures were changed as sine law.The arc lengths of straightening segments and bending segments were extended significantly.The strain rate in the new curve was less than creep strain rate so that high-temperature creep behavior might be used fully in the straightening processes by finite element method.The parameters of thermo-physical property were confirmed and the creep constitutive equa-tion was derived through the uniaxial tensile tests of Q460E steels on the Gleeble-3800 machine.Strain rates in the new curve were close to the minimum creep strain rates,thus the slabs might be straight-ened by creep deformations mainly.Due to the lower strain rates,internal cracks caused by bending and straightening might be effectively avoided,and the quality of the slabs was improved.关键词
连铸坯/蠕变矫直/应变速率/矫直曲线Key words
continuous casting slab/creep straightening/strain rate/straightening curve分类
矿业与冶金引用本文复制引用
张兴中,郭龙,冯常喜..基于高温蠕变特性的连铸坯新矫直技术[J].中国机械工程,2017,28(10):1232-1237,6.基金项目
国家自然科学基金资助项目(51275446) （51275446）
河北省自然科学基金资助项目(E2016203492) （E2016203492）
河北省研究生创新资助项目(2016SJBS027) （2016SJBS027）
河北省引进留学人员项目(C2013005012) （C2013005012）
