An Investigation into the Effect of Electro-Contact Heating in the Machining of Low-Rigidity Thin-Walled Micro-Machine Parts

Review Materials Science, Multidisciplinary

Modeling the oxidation kinetics of titanium alloys: Review, method and application to Ti-64 and Ti-6242s alloys

N. Vache et al.

Summary: The oxidation kinetics of Ti-6AI-4V and Ti-6AI-2Sn-4Zr-2Mo-Si were compared, showing that despite Ti-6AI-4V experiencing larger mass gains, the two alloys have equivalent behavior in terms of oxygen dissolution and diffusion.

CORROSION SCIENCE (2021)

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Article Chemistry, Physical

Wear Resistance Improvement of Cemented Tungsten Carbide Deep-Hole Drills after Ion Implantation

Dmitrij Morozow et al.

Summary: This paper focuses on prolonging the life of tools for deep-hole drilling using an ion implantation process to enhance the durability of tungsten carbide (WC)-Co guide pads. The implanted guide pads showed over 2.5 times greater durability than nonimplanted ones in the best case, attributed to the presence of a carbon-rich layer and extremely hard tungsten nitrides. The improvement is due to the dissociation of tungsten carbide phase and the lubrication effect of the pure carbon layer.

MATERIALS (2021)

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Article Automation & Control Systems

Development of a frictionally damped boring bar for chatter suppression in boring process

Sajad Hayati et al.

Summary: A novel boring bar was developed with an internal frictional damping structure to reduce chatter in machining processes. Experimental comparisons showed that the proposed tool exhibited higher performance in modal and cutting tests compared to a regular boring bar.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2021)

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Article Computer Science, Artificial Intelligence

A thermo-mechanical machining method for improving the accuracy and stability of the geometric shape of long low-rigidity shafts

Antoni Swic et al.

Summary: The article introduces a new thermo-mechanical machining method that combines straightening and heat treatment operations for the manufacture of long low-rigidity shafts. Through axial straightening and quenching in tests, the method increases corrosion resistance and improves the accuracy and stability of the geometric shape of the shaft.

JOURNAL OF INTELLIGENT MANUFACTURING (2021)

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Article Engineering, Industrial

Deflection prediction of micro-milling Inconel 718 thin-walled parts

Zhenyuan Jia et al.

Summary: The research proposes a method for deflection prediction of micro-milling thin-walled parts, establishing a simulation model for predicting milling force and using element birth/death technique to build a deflection prediction model. The correctness of both models is verified through experiments, providing a feasible way for deflection prediction and laying a foundation for deflection suppression and machining accuracy improvement.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2021)

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Article Engineering, Mechanical

Experimental study on micromilling deformation control of micro-thin wall based on the optimal tool path

Jiaming Zhou et al.

Summary: This paper explores the deformation control of micro-thin-walled materials during milling, proposing new strategies and conducting experiments to verify their effectiveness. The study aims to improve machining accuracy of micro components and provides valuable insights for future research in this area.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING (2021)

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Article Materials Science, Multidisciplinary

A comparison between corrosion performances of titanium grade 2 and 7 in strong reducing acids

Luca Casanova et al.

Summary: This study compared the corrosion resistance of commercially pure titanium and the Ti-Pd alloy in a strong reducing acid environment, finding that sulfuric acid, hydrochloric acid, and oxalic acid were the most aggressive chemicals for commercially pure titanium. Therefore, the use of Ti grade 7 is necessary under such conditions.

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION (2021)

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Article Physics, Multidisciplinary

Statistical analysis and modeling of temperature distribution during various milling operations of thin walled aircraft parts

Mohamed Slamani et al.

Summary: Skin panels, important components of aircraft structures, are commonly produced from 2024-T3 aluminum alloys with pockets created by chemical milling for weight reduction. However, this process is time-consuming and has health and environmental concerns. Investigating the effect of cutting conditions on heat generation using experimental design techniques, the study identified relationships among heat generation, process parameters, cutting region, and machining operation, successfully detecting significance in temperature variation between cutting zones and operations.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS (2021)

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Article Engineering, Mechanical

A chatter detection method in milling of thin-walled TC4 alloy workpiece based on auto-encoding and hybrid clustering

Yichao Dun et al.

Summary: In this study, a new unsupervised method is proposed to diagnose chatter stability in milling based on unlabeled dynamic signals, which is not susceptible to measurement errors, does not require labels, and demonstrates robustness.

MECHANICAL SYSTEMS AND SIGNAL PROCESSING (2021)

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Letter Engineering, Electrical & Electronic

Surface Texture after Turning for Various Workpiece Rigidities

Michal Dobrzynski et al.

Summary: The study analyzed the surface texture of turned parts with different rigidity values and L/D ratios, showing that AISI 304 stainless steel surfaces have significantly better roughness and waviness values compared to other materials. Low rigidity AISI 304 shafts can achieve higher quality texture and have a positive impact on overall performance, with surface irregularities decreasing along with the distance from the tailstock.

MACHINES (2021)

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Article Engineering, Aerospace