工程科学学报2015，Vol.37Issue(12)：1630-1636,7.DOI:10.13374/j.issn2095-9389.2015.12.015
中厚板边部折叠模拟实验及机理研究
Simulation experiments and mechanism of medium plate edge folding
马忠伟 1张慧 2胡鹏 2赵沛 2宋波2
作者信息
- 1. 北京科技大学冶金与生态工程学院,北京100083
- 2. 钢铁研究总院连铸技术国家工程研究中心,北京100081
- 折叠
摘要
Abstract
The formation mechanism and influencing factors of fold defects at the medium plate edge were studied by detecting and analyzing edge folding samples. It is found that the plate edge folding phenomenon results from the transformation of slab lateral side to plate surface during the broadside rolling process. The microstructure observed at the fold defects is composed of iron oxide and a de-carburization layer formed at high temperature in the plate surface before rolling. Finite element numerical simulation of the rolling process confirms that the folding defects are mainly caused by the transformation of lateral side. The influences of slab defects, rolling procedures, broadening passes and reduction on the plate fold defects were obtained by rolling experiments. Experimental results show that rolling spread leads to the fold edge defects, which do not depend on the quality of the slab. In the process of rolling, the folding of lateral side transfers to the plate surface and changes to be edge seam defects. The distance of folding to the edge increases with the increment of broadside rolling passes and reduction.关键词
板材/轧制/边部折叠/形成机理/模拟实验Key words
steel plates/rolling/edge folding/formation mechanisms/simulation experiments分类
金属材料引用本文复制引用
马忠伟,张慧,胡鹏,赵沛,宋波..中厚板边部折叠模拟实验及机理研究[J].工程科学学报,2015,37(12):1630-1636,7.
