Machining and Finishing Processes for Metals

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (31 January 2023) | Viewed by 7076

Special Issue Editor


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Guest Editor
Faculty of Mechanical Engineering, University of Niš, Niš, Serbia
Interests: non-conventional machining; design of experiments; modelling and optimization; artificial intelligence; multiple criteria decision making; quality tools

Special Issue Information

Dear Colleagues,

Machining technologies represent of the most widely used production technologies because they offer cost-effective, high-quality and accurate technological solutions. Although cutting mechanics and machinability are favorable for a wide spectrum of metallic materials, the continuous development of advanced metallic and non-metallic materials with improved properties has led to the increased application of non-conventional machining technologies. By using mechanical, thermal or chemical energy in direct forms, these technologies are capable of providing a high energy density, thus enabling the machining of difficult-to-cut materials, parts with complex geometries and narrow tolerances, micro parts, as well as the realization of specific production features at acceptable production rates and high-quality levels. Moreover, the simultaneous combination of different energy forms and machining mechanisms, such as those used by hybrid machining processes, further expands machining capabilities. In order to improve the aesthetic appeal of machined products; enhance their mechanical, tribological or electrical properties; and remove any possible defects or non-conformances, machining processes are usually followed by different finishing processes, such as grinding, honing, polishing, lapping, blasting, plating, coating, heat treating, advanced super finishing processes, etc.

Considering that the aforementioned processes can be regarded as highly complex systems with multiple inputs and outputs, scientific studies, engineering and manufacturing practices are striving for a better understanding of the underlying physical phenomena of these processes. Thus, preconditions are created for the determination of (near) optimal conditions for a particular production system (workpiece material, machine, tool, process). Consequently, this brings numerous benefits to manufacturers and customers. Moreover, the continual development of cutting tools, machine tools, computer-aided technologies, research in machining and finishing processes, as well as the advancement in scientific methods and approaches, form the bases of the novel practical applications of these technologies, meaning that research in these fields always remains topical.

This Special Issue kindly invites researchers from the aforementioned fields to present new theoretical or experimental results and recent advancements in the form of research articles and reviews.

Dr. Miloš Madić
Guest Editor

Manuscript Submission Information

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Keywords

  • machining
  • non-conventional machining
  • metal finishing processes
  • numerical modeling and simulation
  • analytical and empirical modeling
  • machinability criteria
  • process optimization
  • quality performances
  • productivity and economical performances
  • sustainable machining

Published Papers (2 papers)

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Review

65 pages, 18004 KiB  
Review
Understanding the Mechanism of Abrasive-Based Finishing Processes Using Mathematical Modeling and Numerical Simulation
by Abdul Wahab Hashmi, Harlal Singh Mali, Anoj Meena, Kuldeep K. Saxena, Ana Pilar Valerga Puerta, Chander Prakash, Dharam Buddhi, J. P. Davim and Dalael Saad Abdul-Zahra
Metals 2022, 12(8), 1328; https://doi.org/10.3390/met12081328 - 08 Aug 2022
Cited by 12 | Viewed by 4316
Abstract
Recent advances in technology and refinement of available computational resources paved the way for the extensive use of computers to model and simulate complex real-world problems difficult to solve analytically. The appeal of simulations lies in the ability to predict the significance of [...] Read more.
Recent advances in technology and refinement of available computational resources paved the way for the extensive use of computers to model and simulate complex real-world problems difficult to solve analytically. The appeal of simulations lies in the ability to predict the significance of a change to the system under study. The simulated results can be of great benefit in predicting various behaviors, such as the wind pattern in a particular region, the ability of a material to withstand a dynamic load, or even the behavior of a workpiece under a particular type of machining. This paper deals with the mathematical modeling and simulation techniques used in abrasive-based machining processes such as abrasive flow machining (AFM), magnetic-based finishing processes, i.e., magnetic abrasive finishing (MAF) process, magnetorheological finishing (MRF) process, and ball-end type magnetorheological finishing process (BEMRF). The paper also aims to highlight the advances and obstacles associated with these techniques and their applications in flow machining. This study contributes the better understanding by examining the available modeling and simulation techniques such as Molecular Dynamic Simulation (MDS), Computational Fluid Dynamics (CFD), Finite Element Method (FEM), Discrete Element Method (DEM), Multivariable Regression Analysis (MVRA), Artificial Neural Network (ANN), Response Surface Analysis (RSA), Stochastic Modeling and Simulation by Data Dependent System (DDS). Among these methods, CFD and FEM can be performed with the available commercial software, while DEM and MDS performed using the computer programming-based platform, i.e., “LAMMPS Molecular Dynamics Simulator,” or C, C++, or Python programming, and these methods seem more promising techniques for modeling and simulation of loose abrasive-based machining processes. The other four methods (MVRA, ANN, RSA, and DDS) are experimental and based on statistical approaches that can be used for mathematical modeling of loose abrasive-based machining processes. Additionally, it suggests areas for further investigation and offers a priceless bibliography of earlier studies on the modeling and simulation techniques for abrasive-based machining processes. Researchers studying mathematical modeling of various micro- and nanofinishing techniques for different applications may find this review article to be of great help. Full article
(This article belongs to the Special Issue Machining and Finishing Processes for Metals)
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30 pages, 5044 KiB  
Review
A Review on Fabrication of Cylindrical and Rotating Parts by Thermoelectric-Erosion Based Turning Processes
by Sujeet Kumar Chaubey and Kapil Gupta
Metals 2022, 12(7), 1227; https://doi.org/10.3390/met12071227 - 20 Jul 2022
Cited by 2 | Viewed by 1776
Abstract
Nowadays, advanced turning processes are extensively being adopted to perform different types of turning operations such as straight turning, taper turning on Hastelloy, Nimonic, and Inconel, stainless steel, and tool steel to fabricate better quality cylindrical and rotating parts such as miniature-bars, miniature-pins, [...] Read more.
Nowadays, advanced turning processes are extensively being adopted to perform different types of turning operations such as straight turning, taper turning on Hastelloy, Nimonic, and Inconel, stainless steel, and tool steel to fabricate better quality cylindrical and rotating parts such as miniature-bars, miniature-pins, miniature-electrodes, and miniature-tools. This paper presents a review of the previous research conducted on the turning of miniature cylindrical bars using thermoelectric-erosion based turning processes namely thermoelectric-erosion turning (TET) and wire-assisted thermoelectric-erosion turning (WTET). It also highlights work and tool electrode materials, types of dielectrics, detailed specifications of turning, types of turning, process parameters, performance measures, advantages and limitations, and key findings. The paper ends with conclusions and future research directions. This paper aims to facilitate researchers and scholars by highlighting the potential and capabilities of TET and WTET processes and providing relevant information for ease of fabrication of miniature parts and components from a wide range of difficult-to-machine materials. Full article
(This article belongs to the Special Issue Machining and Finishing Processes for Metals)
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