重庆工商大学学报（自然科学版）2024，Vol.41Issue(4)：26-35,10.DOI:10.16055/j.issn.1672-058X.2024.0004.004
磨粒几何排列对Inconel 718磨抛的有限元仿真研究
Finite Element Simulation Study of the Geometric Arrangement of Abrasive Grains on the Grinding of Inconel 718
摘要
Abstract
Objective To improve the surface precision of nickel-based alloy Inconel 718 during belt grinding and polishing,and to avoid issues such as abrasive grains accumulation on the belt,an analysis was conducted on the top structure and arrangement of abrasive grains on the belt surface.Through three-dimensional dynamic simulation,the variations in grinding force and abrasive debris during the grinding and polishing process were studied.Methods Three types of abrasive grain tip shapes and arrangement spacings,as well as inclinations,were investigated for their grinding mechanisms on Inconel 718.Initially,the grinding processes of point,line,and surface-shaped abrasive grains were analyzed,comparing the chip morphology and grinding force of different types of abrasive grains.Based on the selected point-type abrasive grain,a regular tetrahedral abrasive grain was established,and both ordered and disordered diamond multi-grain models were developed using this type of abrasive grain.Finite element software was used to analyze the effects of gap sizes in both horizontal and vertical directions and changes in abrasive grain arrangement line inclinations on grinding force and workpiece surface quality.Results The results showed that the chip produced by point-type abrasive grains was fragmented,making it easier to discharge between multiple abrasive grains and less likely to clog the belt,while experiencing lower grinding forces during the grinding process.It was found that ordered arrangement of abrasive grains had significant advantages,improving workpiece surface precision,creating uniformly sized grooves on the workpiece surface,and reducing the force exerted on the belt.It was also observed that the magnitude of grinding force increased and then decreased with the increase in arrangement line inclination.Through comparison with experiments,it was found that the shape of abrasive debris changes from block-like to strip-like to elongated strip-like as the horizontal gap increases.Elongated strip-like debris is more easily discharged from the gap,thus achieving the effect of reducing polishing force.Conclusion The use of point-type abrasive grains and appropriate abrasive grain arrangement patterns can effectively improve surface precision after grinding and polishing and promote the discharge of abrasive debris,providing new insights for the manufacturing and production of abrasive belts.关键词
磨粒排列/金刚石/有限元/Inconel 718Key words
abrasive grain arrangement/diamond/finite element/Inconel 718分类
矿业与冶金引用本文复制引用
杨阳,王大中..磨粒几何排列对Inconel 718磨抛的有限元仿真研究[J].重庆工商大学学报（自然科学版）,2024,41(4):26-35,10.基金项目
国家自然科学基金面上项目(5217052158). （5217052158）
