High Performance Machining and Surface Tribology

A special issue of Lubricants (ISSN 2075-4442).

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1111

Special Issue Editors

State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
Interests: friction and wear; grinding; ultra-precision/precision machining; surface integrity; bearings
School of Data Science, City University of Hong Kong, Hong Kong 999077, China
Interests: machining signal processing and analysis; wear detection; surface quality control
Aeronautics Advanced Manufacturing Center (CFAA), Universidad del País Vasco (UPV/EHU), Bizkaia Technology Park, Building 202, 48170 Zamudio, Spain
Interests: high-performance machining; EDM; development and optimization of machining processes; design and application of non-conventional manufacturing technologies; simulation-based performance enhancement

Special Issue Information

Dear Colleagues,

With the rapid changes in the market, the requirements for the performance of high-end equipment have become increasingly stringent. In the current manufacturing field, manufacturing enterprises face difficulties with the key parts of high-performance processing technology in high-end equipment such as aircraft, rockets and new energy vehicles. The operating environment of the key parts of high-end equipment is getting increasingly harsher, making their dimensional deviation and surface integrity requirements more stringent. High-performance machining, advanced machining technology, condition monitoring, surface integrity, interface tribology, surface macro- and micro-characteristics, etc., directly or indirectly affect the service life of the parts of high-end equipment. For example, machining vibration signals, acoustic emission signals, cutting force and thermal signals, power, current, voltage, etc., have a regular mapping relationship with surface wear morphology, friction peak value, roughness, stress, and crystal structure changes. Through the mapping of relationships, coupling problems among process parameters, process monitoring, and service life can be explored. This Special Issue will mainly focus on analyses of multi-source signal processing, the wear mechanisms of high-performance machined surfaces, and the surface wear characteristics of difficult-to-machine materials; it will also focus on analyses of a variety of macro- and micro-mechanism problems in high-performance machined surfaces from a tribological point of view. These studies will not only provide solutions for controlling the full-cycle production quality of high-end products but also solve multi-factor traceability problems that affect high-performance processing. These findings will not only provide a rich scientific basis for high-end-product manufacturers and researchers but also analytical means for research on the friction and wear mechanisms of high-performance machined surfaces. At the same time, it is hoped that this Special Issue will be significant in guiding the research of high-performance machining and surface wear in the future.

Dr. Lai Hu
Dr. Chen Yin
Dr. Jun Wang
Guest Editors

Manuscript Submission Information

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Keywords

  • tribological properties of metal machined surfaces
  • tribological properties of EDM surfaces
  • micro-wear of EDM surfaces
  • special processing and surface tribology
  • high-performance machining tools and surface tribology
  • surface machining signals and tribology
  • machining vibration signals and surface tribology
  • machining acoustic signaling and surface tribology
  • multi-source signal processing and surface tribology
  • surface and wear characteristics of difficult-to-machine materials
  • monitoring and quality control of surface wear in high-performance machining
  • digital-twin applications of high-performance machining
  • theories, methods, and tools of high-performance machining

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Published Papers (2 papers)

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Research

25 pages, 8306 KiB  
Article
Investigation of the Contact Characteristics of a Single-Nut Ball Screw Considering Geometric Errors
by Jun Liu, Huaxi Zhou, Xiaoyi Wang and Changguang Zhou
Lubricants 2025, 13(2), 57; https://doi.org/10.3390/lubricants13020057 - 29 Jan 2025
Viewed by 409
Abstract
As the critical performance index of ball screws, the contact characteristics have a significant influence on the lubricant properties, tribological properties, and wear properties of ball screws, which further directly affect the service life of ball screws. The non-uniform load distribution induced by [...] Read more.
As the critical performance index of ball screws, the contact characteristics have a significant influence on the lubricant properties, tribological properties, and wear properties of ball screws, which further directly affect the service life of ball screws. The non-uniform load distribution induced by geometric errors results in imbalances among balls along the nut, negatively impacting the service life of ball screws. This study focuses on the load distribution of single-nut ball screws under low-speed working conditions. This paper proposes a self-adjustable model of load distribution that considers the flexibility of the screw and nut with respect to the determination of the non-bearing ball. A refined model for axial stiffness is proposed to systematically analyze the influence of geometric errors on stiffness variations under various loading conditions. The results confirm the ability of the proposed model to reveal the static load distribution in view of geometric errors. The greatest discrepancy observed between the theoretical predictions and the experimental data was 9.22%. The numerical simulations demonstrate variation trends in the normal contact load, the loaded-ball number, and the axial deformation of a nut with geometric errors. Furthermore, the relationship between the axial stiffness of a single-nut ball screw and the geometric error is obtained. The self-adjustable model of load distribution is helpful for studying the carrying capacity of a single-nut ball screw. The findings of the study provide a definite reference for optimization of structural design and wear life prediction. Full article
(This article belongs to the Special Issue High Performance Machining and Surface Tribology)
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18 pages, 12905 KiB  
Article
Flow Characteristics and Experimental Verification of T-Groove Dry Gas Seal Under Different Flow States
by Lanxia Zhang, Xuexing Ding, Shipeng Wang and Shuai Zhang
Lubricants 2025, 13(1), 9; https://doi.org/10.3390/lubricants13010009 - 30 Dec 2024
Viewed by 452
Abstract
With the improvement of dry gas seal efficiency in high-parameter fields, the flow pattern of gas film lubrication is complicated. Based on gas lubrication theory, the Reynolds equation of compressible gas was established with a bidirectional T-groove dry gas seal as the research [...] Read more.
With the improvement of dry gas seal efficiency in high-parameter fields, the flow pattern of gas film lubrication is complicated. Based on gas lubrication theory, the Reynolds equation of compressible gas was established with a bidirectional T-groove dry gas seal as the research object. The Reynolds equation was solved to obtain a modified turbulent film pressure distribution law that affects gas lubrication. The effectiveness of the calculation program was verified by experimental tests. The results show that with an increase in operating parameters, the turbulence effect caused the gas film pressure fluctuation in the T-groove region to intensify, resulting in gas film flow instability. In addition, the inertia effect improved, which slowed down the leakage and affected the change law of stiffness and the rigid leakage ratio. When the fluid speed and gas pressure were low, the inertia effect could be ignored. When the groove depth was increased to 8 μm, the height difference between the trough and non-T-groove region became larger due to the combination of the turbulence and inertia effects. Further, when the gas film thickness was 3 μm, the opening force and gas film stiffness were high due to the dynamic pressure effect in the small film thickness groove. An increase in the gas film thickness weakened the turbulence effect and reduced the gas film pressure fluctuation. Full article
(This article belongs to the Special Issue High Performance Machining and Surface Tribology)
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