In-process residual stresses regulation during grinding through induction heating with magnetic flux concentrator

Li, Feng1,2; Li, Xuekun3; Wang, Tao1; Rong, Yiming(Kevin)3,4; Liang, Steven Y.2

2020

10.1016/j.ijmecsci.2019.105393

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES   影响因子和分区

0020-7403

1879-2162

Super-alloy Inconel 718, which has advantages of high temperature strength and corrosion resistance, is widely applied as the high temperature components of the turbine engines in the energy and aerospace manufacturing industry. Grinding is generally used as the final material removal process to acquire good dimensional accuracy and surface quality. However, the large residual tensile stress is often obtained on the ground workpiece surface, which is harmful and detrimental to the fatigue strength and service life of the component. In this paper, a novel approach of regulating the residual stress during grinding assisted by induction heating is proposed and validated by simulation and experiments. The principle of this method is to regulate the grinding temperature distribution profile by implanting a sub-surface heat source with well-controlled induction heating technology. Then the temperature profile along the depth during grinding becomes more uniform thus diminishes the formation of tensile stress. The function mechanism of the induction heating with magnetic flux concentrator (MFC) is studied and the finite element model is carried out to study the feasibility of the process. In addition, the experimental platform of this novel induction heating assistant grinding system is established, and several sets of experimental studies are carried on. The results show that, compared with ordinary grinding, the surface residual stress under the novel technology has been improved a lot, which further verifies the proposed regulation mechanism of residual stress in this paper is feasible and available. At the same time, the influence of the process parameters on the final residual stress distribution is studied. Combined with the results of the simulation and experiment analysis, the ultimate realization of active control under the novel technology of residual stress is achieved, which can provide the basis for the process design and optimization for in-depth research.
© 2019

Inconel 718 Grinding Residual stress Induction heating Magnetic flux concentrator

EI ; SCI

英语

其他

[201901D211012] ; [201806935026] ; [2019L0228] ; National Major Science and Technology Projects of China[20181101008] ; National Natural Science Foundation of China[U1430116]

Engineering ; Mechanics

Engineering, Mechanical ; Mechanics

WOS:000531024200009

Elsevier Ltd

20200308032090

Concentration (process) ; Corrosion resistance ; Corrosion resistant alloys ; Grinding (machining) ; High strength alloys ; High temperature corrosion ; High temperature effects ; Magnetic flux ; Residual stresses ; Solar concentrators ; Tensile stress ; Thermal fatigue

Metallurgy:531.1 ; Metals Corrosion:539.1 ; Machining Operations:604.2 ; Process Heating:642.1 ; Solar Energy and Phenomena:657.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

ENGINEERING

EV Compendex

1.College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan; 030024, China
2.George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, Atlanta; GA; 30332-0405, United States
3.Department of Mechanical Engineering, Tsinghua University, Beijing; 100084, China
4.Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, China

Li, Feng,Li, Xuekun,Wang, Tao,et al. In-process residual stresses regulation during grinding through induction heating with magnetic flux concentrator[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2020,172.

Li, Feng,Li, Xuekun,Wang, Tao,Rong, Yiming,&Liang, Steven Y..(2020).In-process residual stresses regulation during grinding through induction heating with magnetic flux concentrator.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,172.

Li, Feng,et al."In-process residual stresses regulation during grinding through induction heating with magnetic flux concentrator".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 172(2020).