Microscopic contact pressure and material removal modeling in rail grinding using abrasive belt

Fan, Wengang; Wang, Wenxi; Wang, Junda; Zhang, Xinle; Qian, Chang; Ma, Tengfei

doi:10.1177/0954405420932419

Cited by 29 publications

(12 citation statements)

References 34 publications

(32 reference statements)

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“…(c) Droplet on superhydrophobic surface. (d) Droplet adheres to superhydrophobic surface [18] What's more, the material removal mechanism [5,6] will further lead to uncertainty of the surface microstructure forming.…”

Section: Introductionmentioning

confidence: 99%

Laser processing of micro/nano biomimetic structures

Xiao

Liu

et al. 2021

Micro & Nano Letters

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Inspired by nature, many researchers have noticed that the micro-and nano-structures originated from organism's surfaces which indict unique properties such as superhydrophobicity, drag reduction, structure colour have much use in academic value. However, conventional processing methods for mimicking biomimetic surface need multistep and is time wasted, not environmental friendly and uneconomic. Thanks to the development of ultrafast laser technology, the pulse duration can reach femtosecond scale, which can precisely realize micro-and nano-processing in one-step. Here, we introduce and demonstrate the principles of some typical properties. The typical structures caused by interaction between laser and material are discussed. Moreover, laser-processing methods for biomimetic surface are highlighted to achieve specialized performance. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Laser processing of micro/nano biomimetic structures

Xiao

Liu

et al. 2021

Micro & Nano Letters

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“…In common grinding hardening process, the grinding depth and feeding speed are the routine process variables that have impact on the manufacturing effect. 13,14 Therefore, the grinding depth and feeding speed are selected as the experimental factor. In order to improve the efficiency of experiment, the given different grinding depth and feeding speed are selected to carry on partial orthogonal experiment.…”

Section: Selection Of Experimental Factormentioning

confidence: 99%

A research on the mechanism and model of surface micro-damage in grinding hardening

Shi

Zhang

Xiu

2021

Advances in Mechanical Engineering

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Grinding hardening can obtain hardening effect besides fine machining effect on the surface of workpiece. A certain degree of surface micro-damage will be formed during grinding hardening process which mainly contains micro-crack, melting coating, decarburization, and surface scratch. In order to study the micro-damage of grinding hardening, the paper carries on a grinding hardening experiment and the characteristics of micro-damage are observed. The generation mechanism of micro-crack is revealed. It is formed by the accumulation of dislocation pile-up in the condition of grinding hardening process. When the grinding depth reaches a certain value, the surface micro-crack will be produced obviously and become more serious with the increasing of grinding depth. Other micro-damage containing surface melting coating, decarburization, and surface scratch are also studied and their relevance with micro-crack is revealed. Based on the grinding hardening theory and pile-up dislocation theory, a model for micro-crack of grinding hardening is established. The calculating result of the model accords with the experimental result in general.

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“…6,7 Belt grinding offers ''flexible grinding'' and ''cold grinding,'' which are widely used in the precision machining of parts that are difficult to machine, such as titanium alloy blades. [8][9][10] However, there is little targeted research characterizing residual stress on the belt grinding surface of titanium alloy. There is no perfect characterization mechanism, making it difficult to predict the residual stress on the grinding surface to effectively guide the titanium alloy grinding process.…”

Section: Introductionmentioning

confidence: 99%

A multi-particle abrasive model for investigation of residual stress in belt grinding of titanium alloys

Xiao

Song

Zhou

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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The titanium alloy blade is a key part of an aero-engine, but its high surface efficiency and precision machining present technical problems. Belt grinding can effectively prolong the fatigue life of the blade and enhance the service performance of the aero-engine. However, the residual stress of the workpiece after belt grinding directly affects its service performance and life. The traditional single particle abrasive model simulation is limited in exploring the influence of grinding process parameters on surface residual stress. In this study, an ABAQUS simulation model of multi-particle belt grinding is established for titanium alloy material, a finite element (FE) simulation is conducted with different technological parameters, and the results are analysed. The critical belt grinding experiment is conducted on thin-walled titanium alloy parts, and the distribution characteristics of surface residual stress after grinding are studied to understand the influence of grinding parameters on the formation of surface residual stress. Comparing the results of the FE simulation and the grinding experiment, the common law of stress change and the prediction model are obtained. The results show that the multi-particle belt grinding simulation is consistent with the belt grinding experiment in terms of the influence of grinding parameters on residual stress. The simulation can serve as a guide in actual belt grinding to some extent. Directions for improving the multi-particle abrasive simulation model are discussed.

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Microscopic contact pressure and material removal modeling in rail grinding using abrasive belt

Cited by 29 publications

References 34 publications

Laser processing of micro/nano biomimetic structures

Laser processing of micro/nano biomimetic structures

A research on the mechanism and model of surface micro-damage in grinding hardening

A multi-particle abrasive model for investigation of residual stress in belt grinding of titanium alloys

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