云南冶金2026，Vol.55Issue(2)：131-143,13.
冒口参数对带帽圆形钢锭凝固缺陷影响的数值模拟
Numerical Simulation of the Influence of Riser Parameters on Solidification Defects of Capped Round Steel Ingots
靳宿桐 1姚焯 1刘颖杰 2张振山 3闫可欣1
作者信息
- 1. 辽宁科技大学材料与冶金学院,辽宁鞍山 114051
- 2. 沈阳化工大学机械与动力工程学院,辽宁沈阳 110142
- 3. 辽宁科技大学机械工程与自动化学院,辽宁鞍山 114051
- 折叠
摘要
Abstract
In order to solve the defects caused by uneven heat transfer in the traditional casting process,this study is based on the solidification theory of iron and steel metallurgy,and 8.8-ton of round steel ingot is taken as the research object,Solid Works and Pro CAST software were used for 3D modeling and numerical simulation,and the effects of pouring temperature,ther-mal conductivity of insulation plate,thickness of cover plate and gap width on the internal shrinkage porosity and solidification structure of steel ingots were studied.The results show that the pouring temperature increases,the depth of concentrated shrinkage porosity increases,the volume of shrinkage porosity first decreases and then increases,grain number decreases,and the columnar grain volume increases.The thermal conductivity of the insulation board increased from 0.10 W/(m·K)to 1.00 W/(m·K),and the shrinkage depth also increased.The concentrated shrinkage depth increased by 32.02％.When the cover thickness is 90 mm and the gap width is 20 mm,the depth of the central shrinkage cavity decreased by 0.71％,and the volume of the shrinkage cavity reduced by 6.36％.This study provides a theoretical basis and practical guidance for minimizing internal defects,improving ingot yield,and ensuring the quality of subsequent forging.关键词
凝固缺陷/疏松缩孔/凝固组织过程/数值模拟/保温板/盖板Key words
solidification defects/shrinkage porosity/solidified structure process/numerical simulation/insulation plate/cover plate分类
矿业与冶金引用本文复制引用
靳宿桐,姚焯,刘颖杰,张振山,闫可欣..冒口参数对带帽圆形钢锭凝固缺陷影响的数值模拟[J].云南冶金,2026,55(2):131-143,13.
