A unique spinning method for grain refinement: repetitive shear spinning

Wang, X.X.; Zhan, Mei; Fu, Mingwang; Guo, Jing; Xu, Rui; Lei, Xinying

doi:10.1016/j.proeng.2017.10.929

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…During ablation or photolytic processing, melting and evaporation of the material occurs when a highenergy laser beam hits the work surface [207]. Wang et al [208] analysed the effects of different textures on the surfaces of tools produced with a nanosecond fibre laser on the tribological conditions at the interface between the moulded material and the tool. The authors analysed many shapes of the depressions (elliptical, spherical, S-shaped) and their distribution (radial, tetragonal and hexagonal) on the surface of the tools in relation to the direction of sheet metal movement.…”

Section: Structured and Textured Tool Surfacesmentioning

confidence: 99%

Approaches for Preventing Tool Wear in Sheet Metal Forming Processes

Trzepieciński

2023

Machines

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Sheet metal forming processes, the purpose of which is to give the shaped material appropriate mechanical, dimensional and shape properties, are characterised by different values of unit pressures and lubrication conditions. Increasing the efficiency of tool work by increasing their durability, efficiency and reliability is still one of the main indicators of increasing production efficiency. Tool wear in metal forming technologies significantly differs from the character of wear in other methods of metalworking, such as machining. This article presents the characteristics of tool wear mechanisms used in sheet metal forming. Possibilities of increasing the durability of tools by applying coatings produced by laser techniques, chemical vapour deposition and chemical vapour deposition are also discussed. Great emphasis is placed on self-lubricating and functional materials and coatings. Current trends in lubricants and lubrication methods in sheet forming, including tool texturing, are also presented.

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Section: Structured and Textured Tool Surfacesmentioning

confidence: 99%

Approaches for Preventing Tool Wear in Sheet Metal Forming Processes

Trzepieciński

2023

Machines

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“…The authors predicted the probability of cracking and the location of a crack in the cup wall during the thickness reduction step and the height of the final part with 80% accuracy as compared with the experiments. Wang et al (2017) studied the role of the spinning process in reducing the size of crystalline grains of aluminum-alloy plates. They showed that the increase of the equivalent strain during the spinning process causes a further reduction of the size of crystalline grains of the workpiece.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and experimental investigation: Metal spinning process of stepped thin-walled cylindrical workpiece

Seyedzavvar

Oliaei

et al. 2022

Turkish Journal of Engineering

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Sheet metal Spinning process Feed rate Mandrel rotational speed Stress and strain Wrinkling. Many equipment and devices utilized in the aerospace industry are formed as symmetric parts through high plastic deformation of high strength sheet metal alloys with low thickness. Considering the inherent advantages of the spinning process of simple tooling and concentrated deformation loading, this process can be considered as one of the main options in producing these thin-sectioned lightweight parts. In this study, a Finite Element (FE) model has been developed to simulate the formation of a stepped thin-walled cylindrical workpiece of AISI 316 stainless steel alloy by spinning process. The FE simulation results were employed to investigate the effects of process parameters, including feed rate of the roller and rotational velocity of the mandrel on the distribution of stress and strain in the sheet metal, wrinkling failure, and thinning of the sheet metal during deformation. Experiments were carried out using selective input parameters based on the results of FE simulations. The comparison between FE simulations and experiments revealed that the developed model could predict the thinning of the sheet metals with over 93 % accuracy. Additionally, a good agreement between the experimentally deformed sheet configurations with those resulting from finite element simulations has been observed.

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