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Identification of the Impact of Tool Protective Coatings on Temperature and Heat Distribution in the Cutting Zone

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 877

Special Issue Editors


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Guest Editor
Faculty of Mechanical Engineering, Opole University of Technology, ul. Mikołajczyka 5, 45-271 Opole, Poland
Interests: heat distribution in the cutting zone; energy consumption of cutting processes; cutting tools; anti-wear coatings for cutting tools

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Guest Editor
Department of Manufacturing Engineering and Automation Products, Opole University of Technology, 45-758 Opole, Poland
Interests: sustainable renewables; solar energy
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Special Issue Information

Dear Colleagues,

Machining is still the basic technique for manufacturing machine parts. Most of the tools used in the engineering industry are coated tools. The main task of using protective coatings is to reduce tool wear. Protective coatings primarily change the tribological interactions at the interface between the cutting tool and the workpiece. They also affect the amount of heat generated during cutting, and above all, the change in heat flows flowing from the decohesion zone of the material to the blade, to the chip and to the workpiece. High temperature in cutting is an unfavorable phenomenon because it promotes wear of the blade. Recently, the machine parts industry has been striving to miniaturize the manufactured elements, to create products with a complex shape and to use materials that are difficult to machine. Tools are being used more and more often in harsh conditions. Therefore, knowledge of the mechanisms of the impact of coatings on the cutting process, and especially on the amount of heat generated and its distribution in the cutting zone, is so important.

Dr. Marian Bartoszuk
Prof. Dr. Zhixiong Li
Guest Editors

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Keywords

  • coated cutting tools
  • anti-wear protective coatings
  • properties of protective coatings
  • heat distribution in the cutting process
  • heat partition coefficient

Published Papers (1 paper)

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Research

13 pages, 5835 KiB  
Article
Synergistic Reinforcement of Si3N4 Based Ceramics Fabricated via Multiphase Strengthening under Low Temperature and Short Holding Time
by Jun-Wei Huang, Xiao-An Lv, Xiao-Feng Dong and Chang-Chun Ge
Materials 2023, 16(18), 6163; https://doi.org/10.3390/ma16186163 - 11 Sep 2023
Viewed by 611
Abstract
Si3N4 ceramic as a tool material shows promising application prospects in high-speed machining fields; however, the required high mechanical properties and low-cost preparation of Si3N4 ceramic tool materials restrict its application. Herein, synergistic reinforced Si3N [...] Read more.
Si3N4 ceramic as a tool material shows promising application prospects in high-speed machining fields; however, the required high mechanical properties and low-cost preparation of Si3N4 ceramic tool materials restrict its application. Herein, synergistic reinforced Si3N4 ceramic tool materials were fabricated by adding β-Si3N4 seeds, inexpensive Si3N4 whiskers and TiC particles into coarse commercial Si3N4 powder (D50 = 1.5 μm), then sintering by hot-pressing with low temperature and short holding time (1600 °C—30 min—40 MPa). The phase assemblage, microstructure evolution and toughening mechanisms were investigated. The results reveal that the sintered Si3N4 ceramics with synergistic reinforcement, compared to those with individual reinforcement, present an enhancement in relative density (from 94.92% to 97.15%), flexural strength (from 467.56 ± 36.48 to 809.10 ± 45.59 MPa), and fracture toughness (from 8.38 ± 0.19 to 10.67 ± 0.16 MPa·m1/2), as well as a fine Vickers hardness of 16.86 ± 0.19 GPa. Additionally, the various reinforcement modes of Si3N4 ceramics including intergranular fracture, crack deflection, crack bridging and whiskers extraction were observed in crack propagation, arising from the contributions of the added β-Si3N4 seeds, Si3N4 whiskers and TiC particles. This work is expected to serve as a reference for the production of ceramic cutting tools. Full article
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