机电工程技术2025，Vol.54Issue(1)：1-8,8.DOI:10.3969/j.issn.1009-9492.2025.01.001
难变形金属复杂构件电流辅助流动-分形旋压成形机理研究
Research on Mechanism of Current-assisted Flow-splitting Spinning for the Complex Component Made of Difficult-to-deform Metal
摘要
Abstract
Aiming at the problems of long manufacturing cycle time and low toughness of complex components made of difficult-to-deform manufactured by traditional multi-pass cutting and gear shaping method,a current-assisted flow-splitting spinning(CAFSS)is proposed to realize the manufacture for the complex component with less or no chips.The principle of CAFSS of complex 30CrMnSiA alloy structural steel components with"different wall thickness"and"different structure"is analyzed.A finite element model of CAFSS is established using ABAQUS software,and its accuracy is verified.The mechanism of CAFSS is analyzed and an experiment of the CAFSS is carried out.The results show that the FE model has high prediction accuracy for the CAFSS with maximum relative errors of only 6.72%and 5.63%for flow spinning and splitting spinning,respectively.The material of current-assisted flow spinning(CAFS)presents a three-direction compressive stress state.At the end stage of the CAFS,there will be large tensile stress and tensile strain in the wall section of the cup-shaped part.During the current-assisted splitting spinning(CASS),the stress distribution shows the three-direction compressive stress at the tooth groove area.However,at the top of the tooth,it is the tensile stress in the radial direction and the other two directions are the compressive stress.The pulsed current reduces the material deformation resistance,which not only reduces the danger zone of the deformation area during flow spinning,but also improves the ability of the material to fill in the radial direction during splitting-spinning,which in turn reduces the phenomenon of tooth unfilling.The experimental results show that the CAFSS can achieve high-precision high-strength and toughness preparation of difficult-to-deform complex components.关键词
难变形金属/复杂构件/电流辅助成形工艺/流动-分形旋压Key words
difficult-to-deform metal/complex component/current-assisted forming process/flow-splitting spinning分类
矿业与冶金引用本文复制引用
夏琴香,陈灿,周昊阳,肖刚锋,张俊豪,程思竹..难变形金属复杂构件电流辅助流动-分形旋压成形机理研究[J].机电工程技术,2025,54(1):1-8,8.基金项目
国家自然科学基金资助项目(52175316) （52175316）
广东省基础与应用基础研究基金(2021A1515011074) （2021A1515011074）
广州市科技计划项目(201804010135) （201804010135）
