当前位置：首页 > 过刊浏览->2020年41卷第11期
基于数值模拟的高镍球铁材料试制与铸件缩孔缩松缺陷分析
Trial Production and Shrinkage/Porosity Defect Analysis of High-nickel Ductile Iron Castings Based on Numerical Simulation
浏览(1807) 下载(8)
- DOI:
- 作者:
- 宁林祥 黄伟明 陈涛 朱博文 满文胜
NING Linxiang;HUANGWeiming;CHEN Tao;ZHU Bowen;MAN Wensheng
- 作者单位:
- 浙江欧冶达机械制造股份有限公司 浙江嘉善北方机械制造有限公司 武汉晨曦芸峰科技有限公司
Zhejiang Ouyeda Machinery Manufacturing Co.,Ltd.,Huzhou 314200,China;Zhejiang Beifang Machinery Manufacturing Co.,Ltd.,Jiaxing 314100,China;Wuhan Yunfeng Technology Co.,Ltd.,Wuhan 430000,China
- 关键词:
- 高镍球墨铸铁 材料组分 缩孔缩松 数值模拟
high-nickel ductile iron chemical composition porosity shrinkage numerical simulation
- 摘要:
- 不同组分的高镍球墨铸铁因其石墨化膨胀情况不同,同样的铸造工艺方案下会形成不同大小的缩孔缩松缺陷。基于芸峰CAE的物性参数计算模块,获取了高镍球铁材料不同配比方案下的物性参数库,根据金属液降温过程中的收缩率提出缩孔缩松缺陷的估算理论,然后与仿真结果进行对比分析。结果表明,孔松缺陷主要与金属液降温过程的密度变化有关,通过铸造数值模拟可以较快地得到合适的化学成分方案。Due to the different graphitization expansion of high-nickel ductile iron with different components,different sizes of shrinkage cavity and porosity would be formed under the same casting process.Based on the physical parameter calculation module of YF CAE,Obtained the physical parameter database of high-nickel ductile iron under different proportioning projects.Then the estimation theory of porosity defects was proposed according to the shrinkage rate of molten metal in the cooling process,and the simulation results were compared and analyzed.The results showed that the porosity defects was mainly related to the density change of molten metal during cooling process,and the appropriate material ratio could be quickly obtained through casting numerical simulation.