Journal articles: 'Ceramics cutting'

1

Jun, Liu, Liu Su, Chen Zhigang, Zhou Fei, and Chang Min Suh. "Effect of Y-TZP on Mechanical Properties of Al2O3-TiB2 Ceramics." International Journal of Modern Physics B 17, no. 08n09 (April 10, 2003): 1279–84. http://dx.doi.org/10.1142/s0217979203018879.

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The effect of Y-TZP additive on the mechanical properties of Al2O3-TiB2 ceramics was investigated. The results indicate that Y-TZP additive can enhance the flexure strength and fracture toughness of Al2O3-TiB2 ceramics, but has little effect on their hardness. The maximum bending strength of Al2O3-TiB2 and Al2O3-TiB2-Y-TZP ceramics are at 20vol% TiB2 content. The maximum fracture toughness for two kinds of ceramics all are at 30vol% TiB2 content. The bending strength and fracture toughness as well as impact resistance of Al2O3-TiB2-Y-TZP ceramics are higher than those of Al2O3-TiB2 ceramics. The cutting behaviors of two kinds of ceramics are satisfactory. When the ceramic cutting tools are applied to continuous cutting, the wear resistance of cutting tools increases as an increase in TiB2 content. But when they are applied to intermittent cutting, the serving life of ceramic cutting tools is mainly governed by their fracture toughness, The mainly failure mechanism of intermittent cutting is micro-chipping.

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Vereschaka, Alexey Anatolevich, Julia Prilukova, Anatoly S. Vereshchaka, Jury Bublikov, and Anatoly Aksenenko. "Control of Temperature in Cutting Zone in Machining of Alloyed Case-Hardened Steels by Applying a Ceramic Tool with Wear-Resistant Coatings." Materials Science Forum 857 (May 2016): 199–205. http://dx.doi.org/10.4028/www.scientific.net/msf.857.199.

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The study examines the effect of TiN coatings, deposited on inserts of cutting ceramics, on the cutting temperature in machining of alloyed case-hardened steels. The study has revealed a substantial decrease of temperature during cutting with coated tools of cutting ceramics as compared with temperature for uncoated tools of cutting ceramics. Positive transformation of the thermal state during the cutting process with the use of coated ceramic tools can improve the quality of machined surfaces. The study has revealed the reduction in thickness of "white layer" of surfaces of machined workpieces of hardened high-alloyed steels in use of coated ceramic tools and the increase of cutting properties of coated ceramic tools.

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Vereschaka, Alexey Anatolevich, Boris Y. Mokritskii, Dmitriy A. Pustovalov, Anatoliy Stepanovich Vereschaka, Jury I. Bublikov, and D. N. Litkin. "Application of High-Strength Gradient Cutting Ceramics with a Multifunctional Coating for Heavy Machining of Hard-to-Cut Materials." Applied Mechanics and Materials 798 (October 2015): 344–50. http://dx.doi.org/10.4028/www.scientific.net/amm.798.344.

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The study deals with the challenge concerning the use of tools made of ceramics with nanostructured multilayer composite multi-component coatings produced through filtered cathodic vacuum-arc deposition for operation of severe machining of materials, including interrupted machining. The study shows the possibility for creating ceramic tools of new generation from high-strength gradient cutting ceramics (HGC-ceramics) of three-layer structure comprising a substrate based on carbide WC-TiC-Co and ceramic top layer based on Al2O3and Si3N4doped AlN and nanostructured multilayer composite multi-component coating of Ti-TiCrN-TiCrAlSiN type. The study presents the results of research on the optimization of composition of two-layer substrate and manufacture of high-strength gradient cutting ceramics (HGC-ceramics) with nanostructured multilayer composite multi-component coatings, as well as the results of laboratory and production certification tests of cutting properties of tools equipped with cutting inserts of two-layer HGC-ceramics with developed coating.

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Guo, X. L., P. X. Cao, H. N. Liu, Y. Teng, Y. Guo, and H. Wang. "Tribological Properties of Ceramics Tool Materials in Contact with Wood-Based Materials." Advanced Materials Research 764 (September 2013): 65–69. http://dx.doi.org/10.4028/www.scientific.net/amr.764.65.

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Tribological properties of ceramic cutting tool materials in contact with wood based materials were studied in this paper by examining how Al2O3-ceramics and Si3N4-ceramics behave in dry sliding experiment in contact with wood-based materials and by comparing their behavior with tungsten carbide material at the same time. It had been found that the ceramics exhibited much better tribological properties than tungsten carbide material, and Si3N4-ceramic performed better than Al2O3-ceramics. The Al2O3-ceramics with an addition of ZrO2 had better tribological performance than the common Al2O3-ceramics in contact with wood-based materials. The tungsten carbide had better tribological performance than ceramics in tribological contact with wood flour/PE material. A well-marked difference occurred in various cutting materials/MDF frictional pair, but the differences in various cutting materials/PB frictional pair were insignificant. An increase of the normal force didn’t result in any significant decrease of the friction coefficient. An addition of ZrO2 in the Al2O3-ceramics could inhabit corrosive wear.

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Miao, He Zhuo, Zhi Jian Peng, Wen Jie Si, Long Hao Qi, Jiang Hong Gong, and Wei Pan. "Investigation on the Modification Methods to Ceramic Cutting Tools." Key Engineering Materials 280-283 (February 2007): 1197–202. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1197.

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There are too many methods to enhance the performance of ceramic cutting tools. All the methods can be sorted into two types: inner modification and surface modification. One of the main method to the inner modification of ceramic cutting tools is dispersion strengthening. Usually, in order to enhance the performance of ceramic cutting tools, some dispersed phases of TiN, TiC or TiCN, Al2O3, and/or ZrO2, and so on, and/or some whiskers, or fibers were added into the ceramic matrixes. And the new types of cutting tools, which possessed much more excellent performance than the original ones, were called composite ceramic cutting tools. For the composite Si3N4-based ceramic, Al2O3-based ceramic, and TiCN-based cermet, the cutting efficiency could be enhanced to 3~10 times, compared with cemented carbide tools. And they can be used for rough and finish machining of various cast iron workpieces and hardened steels, respectively, including milling and planning. Ion implantation is a surface modification for ceramic cutting tools. With certain doses of metals, for example, titanium, zirconium and chromium, and so on, implanted into the ceramics, the hardness, Young’s modulus, fractural toughness, and bending strength, etc., can be enhanced. For Al2O3 and Si3N4 ceramics, the hardness, Young’s modulus, and bending strength increased with a maximum factor of 50%, and the flank wear decreased with a factor of 2~12, compared with the unimplanted ceramic cutting tools. However, the main shortcoming of ion implantation to modify ceramics is the thickness of modified layers. They are, usually, too thin for cutting tools. The so-called PHEDP, pulsed high energy density plasma, is another surface modification method for ceramic cutting tools proposed recently. With such method, much thicker coatings of TiN, TiCN and (Ti,Al)N, etc, were deposited onto Si3N4 and WC ceramic cutting tools.The main merits involved in high hardness and Young’s modulus of the coatings, low residual stresses, and good adhesive strength between the coatings and substrates. And the flank wear of the as-depositedtools decreased with a factor of 5~10.

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Mylnikov, V. V., A. I. Pronin, S. V. Veselov, and D. A. Valko. "RESULTS OF COMPARATIVE STUDIES ON THE DURABILITY OF CUTTING CERAMIC PLATES WHEN TURNING HARDENED STEEL BLANKS." Steklo i Keramika, no. 1 (January 2022): 15–20. http://dx.doi.org/10.14489/glc.2022.01.pp.015-020.

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The paper presents the results of a study on the durability of cutting ceramics: a replaceable polyhedral plate developed at NSTU and cutting ceramics WOK-60 when processing hardened steel blanks made of 40X (45HRC) steel. As a result of the tests carried out, it was found that with the use of cutting modes developed at KNAU, the durability of SMP from cutting ceramics created at NSTU is more than 1.7 times higher than the performance of plates based on the WOK-60 material. At the same time, the roughness of the treated surface of the work piece was Ra = 0.35 ? 0.05 microns when using SMP from the developed ceramics Ra = 0.55 ? 0.05 microns when using WOK-60 plates. The stages of destruction of cutting ceramic plates are revealed, taking into account the hierarchy of structural scales.

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Sotova, E. S., and M. N. Lazareva. "Increasing of cutting efficiency of heat-treated steel through the application of cutting tools of high-strength composite ceramic with coating E. S. Sotova, M. N. Lazareva." Izvestiya MGTU MAMI 6, no. 2-2 (March 20, 2012): 184–89. http://dx.doi.org/10.17816/2074-0530-68500.

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In the paper there is investigated the cutting tool properties of high-strength composite ceramics with multi-coated cutting hardened steel. Mathematical models of cutting are obtained. They establish the dependence of the wear and tear on the back of the instrument, roughness of the machined surface of the parts, the tangent component of the cutting forces, as well as cutting power on the modes of turning. A problem of cutting tools modes optimization is made of high-strength composite ceramics. It is established that the application of the multi-functional coatings on ceramic cutting tool allows you to increase the efficiency of processing.

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Vereschaka, Alexey Anatolevich, Julia Prilukova, Boris Y. Mokritskii, Anatoly S. Vereshchaka, and Nikolay Sitnikov. "Specifics of Application of Cutting Ceramics with Functional Coating in Turning of High-Strength Materials." Materials Science Forum 857 (May 2016): 221–27. http://dx.doi.org/10.4028/www.scientific.net/msf.857.221.

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This paper reviews some of the features of application of cutting ceramics with Ti-TiN-(TiAlZr)N coating for machining of high-strength hardened alloy steel. The study has revealed the conceptual role of coatings on ceramic cutting tools, which can serve as a scientific and technological basis for further improvement of the ceramic tool. It has been found out that the coating increases the antifriction properties of ceramics both due to lower coefficient of friction of the coating material and to reduction of roughness of rake face of the tool, and that is the main cause of 25% reduction in cutting force components for the coated tool, wherein the difference in cutting forces for the coated and uncoated tools is inversely proportional to the thickness of the slice. On the basis of the analysis of the studies on the issues of cutting with coated tools of ceramic material and the results of research presented in this paper, the conceptual role of the coating on the working surfaces of the ceramic tool was formulated, and it can serve as a scientific and technological basis for further improvement of the ceramic tool.

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Panda, Anton, Ján Duplák, Marek Prislupčák, and Pavol Kokuľa. "Analysis of Selected Properties of Cutting Ceramics at Machining Process of Bearing Steel 100Cr6." Applied Mechanics and Materials 616 (August 2014): 308–16. http://dx.doi.org/10.4028/www.scientific.net/amm.616.308.

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Cutting tool durability is very important cutting tool property. Especially for cutting ceramic is necessary to define durability dependence on available set of cutting speeds and to determine lifetime of tools made of cutting ceramic. Durability of cutting tools is defined in standard ISO 3685. In standard ISO 3685 is defined T-vc dependence for different cutting materials and standard included process evaluation of tool durability for cutting materials made of high speed steel, sintered carbide and cutting ceramic. Specification cutting tools durability made of cutting ceramic in machining process of steel 100Cr6 is very important for economics of small and medium-sized enterprises, because cutting tool durability is factor that significantly affects the budget of these enterprises. This problematic is determined for small and medium-sized manufacturers of bearings, because steel 100Cr6 is most commonly used for production of bearing rings 100 mm in diameter. This material is usable for actuator (actuators and reduction gears) too. Description of cutting ceramic durability could mean for bearings manufacturer determination of optimal cutting parameter with maximum possible use of tool lifetime. Standard ISO 3685 contains instructions how to create T-vc dependence for cutting tools made of cutting ceramic. In this standard are only instructions how to create T-vc dependence according to Taylor. The article compares T-vc dependencies for various cutting ceramics (Al2O3, Al2O3+ZrO2, Al2O3+TiCN) with T-vc dependence defined in standard ISO 3685, because this standard describes T-vc dependence for all entered cutting materials together.

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Zubarev, Yu M., and M. A. Afanasenkov. "IMPROVING THE PERFORMANCE OF MINERAL CERAMIC BLADE CUTTING TOOLS." Spravochnik. Inzhenernyi zhurnal, no. 291 (June 2021): 40–44. http://dx.doi.org/10.14489/hb.2021.06.pp.040-044.

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The article considers the possibility of improving the performance of mineral-ceramic cutting plates by removing most of the defects on their working surface due to the formation of functional surface layers by ion-vacuum treatment. A model of a surface-hardened layer for VOK-60 type ceramics is proposed. Based on the configuration model of the substance, chemical elements are selected for modifying the surface layer of ceramics. The results of laboratory and production tests that showed an increase in the performance of ceramic plates after implantation by at least two times are presented.

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Chen, Xiao Chuan, Ling Fei Ji, Yong Bao, and Yi Jian Jiang. "High Quality Fiber Laser Cutting of Electronic Alumina Ceramics." Advanced Materials Research 154-155 (October 2010): 917–22. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.917.

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In this paper, high quality cutting of 1 mm dense Al2O3 electronic ceramic processed by a fiber laser with spot diameter of 15 μm was reported. The narrow kerf with 30μm width was obtained with laser power of 100 W. 300 W is the laser power threshold of the kerf enlargement. Under higher laser power, the ceramics can be damage-free cut with higher cutting speed. Striation-free cutting could be achieved at 1000 W laser power with a cutting speed of 350 mm/s. The ratio of cutting speed to laser power for striation-free cutting was determined as 0.35. The black cutting surface was due to the mass tetragonal alumina induced by N2 as assist gas.

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Jiang, Dong Mei, and Qiang Wang. "Study on Machinery Cutting Technology of Ceramic Parts." Applied Mechanics and Materials 127 (October 2011): 163–67. http://dx.doi.org/10.4028/www.scientific.net/amm.127.163.

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The machinability of ceramics is evaluated by data envelopment analysis, mathematical programming model is constructed, then the optimal solution of decision-making unit is found. These reference values of he tool rake angle, clearance angle, tool cutting edge angle, minor cutting edge angle, tool cutting edge inclination angle, tip ARC radius and cutting speed, back engagement and the range of feeds are obtained through by orthogonal cutting test, these processing parameters are optimized, then better processing results are achieved. Considering the problem of Machining of ceramic materials, the techniques of mechanical cutting process, ceramic turning, grinding, drilling, et al are discussed.

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13

Osipova, I. I., and E. L. Shvedkov. "Cutting ceramics. 1985?1990." Soviet Powder Metallurgy and Metal Ceramics 31, no. 9 (September 1992): 751–63. http://dx.doi.org/10.1007/bf00794810.

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Skanavi, Natalia, and Timofei Dovydenko. "Effects of waterjet cutting waste addition on properties of building ceramics." MATEC Web of Conferences 196 (2018): 04057. http://dx.doi.org/10.1051/matecconf/201819604057.

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The purpose of the paper is to investigate the possibility of using wastes of waterjet metal cutting in the manufacture of building ceramics. A complex study of the composition and properties of the abrasive and hydroabrasive cutting wastes was carried out. The behavior of waste in the composition of the ceramic mass and the ceramic body was investigated. Positive results of the effect of addition of waste on the properties of ceramics were obtained on two types of polymineralic argillaceous raw materials: increase of strength at the optimum content of waste in the mixture, reduction of air and fire shrinkage in all compositions with waste content, possibility of varying the color of products, etc. The similarity of the chemical composition of argillaceous raw materials and wastes was established: oxides of iron, silicon and aluminum are predominant. Electron microscope research has demonstrated that the introduction of waste modifies the structure of the ceramic shard, but does not affect its uniformity. The obtained results allowed to draw conclusions about the possible use of wastes of waterjet metal cutting in the production of ceramics: as a fluxing agent – flux, component for volumetric staining, thinning agent.

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Erenkov, O. Yu. "Influence of cutting ceramics on the formation of the thermoplastics supramolecular structure." Plasticheskie massy, no. 11-12 (January 17, 2023): 40–42. http://dx.doi.org/10.35164/0554-2901-2022-11-12-40-42.

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The question of the efficiency of turning processing of thermoplastic polymer materials with cutting ceramics is considered. The fact of a decrease in the values of the cutting force when turning the investigated thermoplastics with a tool made of ceramic material KNT16 was experimentally established. It has been experimentally proven that turning caprolon and fluoroplastic using a KNT16 cermet cutting insert leads to the formation of a supramolecular structure of a high degree of homogeneity.

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Wei, Mengbo, Pingfa Feng, Huiting Zha, Chao Xu, Yuan Ma, and Feng Feng. "Kinematics and Simulation Analysis of Longitudinal-Torsional Ultrasonic Assisted Grinding of Zirconia Ceramics." Journal of Physics: Conference Series 2173, no. 1 (January 1, 2022): 012002. http://dx.doi.org/10.1088/1742-6596/2173/1/012002.

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Abstract Zirconia ceramics is a typical hard and brittle material, which is very difficult to process. In recent years, with the rapid development of the 3C industry, zirconia ceramic materials have achieved a wide range of applications. Longitudinal-torsional ultrasonic assisted grinding (LTUAG) is efficient for processing hard and brittle materials. However, the mechanism of LTUAG of zirconia ceramic is not studied sufficiently. In this study, the spatial trajectory of the grinding grain in three different grinding methods is established and the critical cutting speed of LTUAG is calculated. Simulation model of LTUAG of zirconia ceramic is established. The results show that the longitudinal-torsional ultrasonic vibration increases the spatial trajectory length of the grinding grain, thereby reducing the thickness of the maximum removal layer and reducing the cutting force. When the cutting speed is less than the critical cutting speed, LTUAG can significantly reduce the Mises stress, the subsurface damage and the cutting force.

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Lavrynenko, S., E. Gevorkyan, W. Kucharczyk, L. Chalko, and M. Rucki. "Cutting Capacity and Wear Resistance of Cr2O3-AlN Nanocomposite Ceramic Obtained by Field Activated Sintering Technique (Fast)." Advances in Materials Science 18, no. 3 (September 1, 2018): 15–21. http://dx.doi.org/10.1515/adms-2017-0037.

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AbstractChromium oxide ceramics may be considered as a new generation of ceramic materials for cutting tools with considerably improved high speed cutting performance. The present work is focused on the development of Cr2O3 nanocomposite materials fabricated with the Field Activated Sintering Technique (FAST). The main objective of the proposed work is to study the influence of electric field on the densification process during FAST sintering of the materials in the Cr2O3-AlN system with nanosize microstructure. Additional objectives are to characterize mechanical properties of the obtained Cr2O3 ceramics. The work aimed to develop composite materials based on Cr2O3-based nanoparticles for cutting, then to check their cutting properties and to work out the recommendations for their use for processing of various materials, accordingly.

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Sahin, Ahmet Z., Bekir Sami Yilbas, and T. Ayar. "Laser Cutting of Ceramic and Thermal Efficiency Analysis." Advanced Materials Research 445 (January 2012): 400–405. http://dx.doi.org/10.4028/www.scientific.net/amr.445.400.

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Laser cutting of ceramics offers considerable advantages over the conventional cutting methods. Some of these advantages include precision of operation, high speed processing and low cost. In addition, cutting process is independent of the mechanical properties of the ceramic material such as hardness and fracture toughness. Alumina is one of the widely used ceramics in industry due to their resistance to harsh environments. Laser cutting of alumina requires high laser power due to high latent heat of melting and elevated melting temperature. In efficient laser cutting process, the low laser power is required. Consequently, for optimum laser cutting conditions of alumina tiles, the thermal efficiency of the cutting process may not be a maximum. The optimum laser cutting parameters provide crack free and parallel edge cuts. Therefore, investigation into laser cutting of alumina ties and the efficiency analysis becomes essential. In the present study, laser cutting of alumina tiles with 3 mm thickness is carried out and thermodynamic analysis associated with the efficiency analysis is introduced. The lump parameter method is incorporated in the thermodynamic analysis. The optimum cutting conditions are then related to the first and second law efficiencies.

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Kurňava, Tomáš, Stancekova Dana, Jozef Struharnansky, and Miroslav Janota. "Identification Turning Machinability of Ceramic Materials." Technological Engineering 10, no. 1 (December 1, 2013): 25–30. http://dx.doi.org/10.2478/teen-2013-0007.

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Abstract The paper deals with machining superhard materials machined by turning. Introductory section contains an analysis of ceramic materials used and their utilization in engineering practice . The aim of the experimental work is the selection of the appropriate cutting discs, cutting establish conditions which would ensure productive machining of the ceramics..

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Volosova, Marina, Sergey Grigoriev, Alexander Metel, and Alexander Shein. "The Role of Thin-Film Vacuum-Plasma Coatings and Their Influence on the Efficiency of Ceramic Cutting Inserts." Coatings 8, no. 8 (August 17, 2018): 287. http://dx.doi.org/10.3390/coatings8080287.

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The main problem with ceramics used in cutting tools is related to the unpredictable failures caused by the brittle fracturing of ceramic inserts, which is critical for the intermittent milling of cyclic loading. A 125-mm-diameter eight-toothed end mill, with a mechanical fastening of ceramic inserts, was used as a cutting tool for milling hardened steel (102Cr6). For the experiments, square inserts of the Al2O3 + SiC ceramic were used and compared with the samples made of Al2O3 + TiC to confirm the obtained results. The samples were coated with diamond-like coating (DLC), TiZrN, and TiCrAlN coatings, and their bending strength and adhesion were investigated. Investigations into the friction coefficient of the samples and operational tests were also carried out. The effect of smoothing the microroughness and surface defects in comparison with uncoated inserts, which are characteristic of the abrasive processing of ceramics, was investigated and analyzed. The process developed by the authors of the coating process allows for the cleaning and activation of the surface of ceramic inserts using high-energy gas atoms. The impact of these particles on the cutting edge of the insert ensures its sharpening and reduces the radius of curvature of its cutting edges.

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A. Moskvitin, Alexey, Lyubov A. Gorovenko, Evgenia V. Kovriga, Olga A. Sumskaya, and Akop S. Abelyan. "Simulation of Physical and Mechanical Properties to Increase the Strength of the Cutting Ceramics." International Journal of Engineering & Technology 7, no. 4.38 (December 3, 2018): 1193. http://dx.doi.org/10.14419/ijet.v7i4.38.27760.

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According to studies [1], cutting tools with plates made of cutting ceramics alloyed with carbide-forming elements have higher heat resistance than standard plates made of cutting ceramics in the delivery stage, since their properties do not meet the requirements. Cutting ceramics with the addition of a nickel alloying element to its main standard fraction has a low heat resistance. With the addition of the manganese alloying element, heat resistance and corrosion resistance and wear resistance of cutting tools equipped with cutting ceramics are reduced. The main alloying element is chromium, which, depending on its quantity, indicates increased or high heat resistance in cutting ceramics.

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Silva, Olivério Moreira Macedo, José Vitor C. Souza, Maria do Carmo de Andrade Nono, G. V. Martins, M. V. Ribeiro, and João Paulo Barros Machado. "Development of Ceramic Cutting Tools for Future Application on Dry Machining." Materials Science Forum 660-661 (October 2010): 724–29. http://dx.doi.org/10.4028/www.scientific.net/msf.660-661.724.

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Advanced ceramic materials constitute a mature technology with a very broad base of current and potential applications and a growing list of material compositions. Within the advanced ceramics category, silicon nitride based ceramics are wear-resistant, corrosion- resistant and lightweight materials, and are superior to many materials with regard to stability in high-temperature environments. Because of this combination the silicon nitride ceramics have an especially high potential to resolve a wide number of machining problems in the industries. Presently the Si3N4 ceramic cutting tool inserts are developed using additives powders that are pressed and sintered in the form of a cutting tool insert at a temperature of 1850 oC using pressureless sintering. The microstructure of the material was observed and analyzed using XRD, SEM, and the mechanical response of this array microstructure was characterized for hardness Vickers and fracture toughness. The results show that Si3N4/20 wt.% (AlN and Y2O3) gives the best balance between hardness Vickers and fracture toughness. The Si3N4/15 wt.% (AlN and Y2O3) composition allows the production of a very fine-grained microstructure with low decreasing of the fracture toughness and increased hardness Vickers. These ceramic cutting tools present adequate characteristics for future application on dry machining.

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Wang, J., and H. Liu. "Profile Cutting on Alumina Ceramics by Abrasive Waterjet. Part 1: Experimental Investigation." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 220, no. 5 (May 1, 2006): 703–14. http://dx.doi.org/10.1243/09544062jmes207a.

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An experimental investigation is presented of the various cutting performance measures, such as the kerf taper and depth of cut, in profile cutting on an 87 per cent alumina ceramic by abrasive waterjet (AWJ) over a wide range of process parameters. It is found that the taper angles on the two kerf walls produced in cutting AWJ of profiles are different in magnitude and exhibit different trends as the profile curvature radius varies. Moreover, the depth of cut increases with an increase in the curvature radius and approaches its maximum in straight cutting. The other process variables affect the cutting process in a way similar to that in straight cutting. Recommendations are finally made for the selection of process parameters in AWJ profile cutting of alumina ceramics. Predictive mathematical models for the major cutting performance measures that are essential for the optimization of the AWJ cutting process are reported in the subsequent part of this investigation.

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Huang, Zhao Hui, Wei Pan, Long Hao Qi, and He Zhuo Miao. "Erosive Wear Behavior of Reaction Sintered Si₃N₄-SiCp Composite Ceramic in Liquid-Solid Flow." Key Engineering Materials 280-283 (February 2007): 1317–18. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1317.

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Si3N4-SiCp composites were prepared using fine Si powders as the starting materials for Si3N4, and SiCp as the aggregates. The erosive wear behavior of reaction sintered Si3N4-SiCp composite ceramic was investigated in liquid-solid flow. The results display that the composite ceramic hold a better capability of erosive wear resistance than 92 Al2O3 ceramics. The SEM pictures of the worn surface indicate that the main erosive wear mechanism of the composite ceramic is coexistence of micro-cutting and chisel-cutting.

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Gorshkov, Ilya V., and M. A. Popov. "Influence of Structural Parameters of Cutting Ceramics on Quality of Processing of Machine Slideways of Metal-Cutting Equipment in Selective Formation of Instrumentation." Key Engineering Materials 854 (July 2020): 64–73. http://dx.doi.org/10.4028/www.scientific.net/kem.854.64.

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Modern methods of machining of bed slideways with the required parameters of accuracy and quality of the processed surfaces are considered in order to increase productivity in the treatment of the surface of machine stands. To improve productivity, the finishing sanding operation has been replaced with finishing milling to ensure the required roughness, flatness and parallelism. The method of replacement of technological operations as exemplified by processing of a bed made of gray cast iron of grade “СЧ-20” is studied. The priority method of increasing the productivity of the processing of machine slideways of metal-cutting equipment, based on the use of cutting ceramics during the processing of the bed as a final technological operation, is determined. Based on the microstructural characteristics of oxide-carbide cutting ceramics, a uniform method of equipping cutters with cutting inserts with equal lifespan is used to increase productivity and achieve the required surface finish. This method of the milling cutter layout allows for longer life and provides the required margin of tool accuracy as well as allows predicting premature wear of the cutting tool. The results of the work are the identification of the patterns of influence of structural parameters of cutting ceramics on the quality of machine slideways of metal-cutting equipment in the selective formation of instrumentation. Studies have shown that the quality of machining depends on the microstructure characteristics of each insert used in the machining process when using interchangeable multi-sided oxide carbide ceramic inserts. The increase in productivity and quality of machining is achieved by monitoring the microstructure of the cutting oxide-carbide ceramics.

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Moriguchi, Hideki, Akihiko Ikegaya, Toshio Nomura, Yoshinari Miyamoto, Zhensi Li, and Kimiaki Tanihata. "Cutting Performance of Hyperfunctional Ceramics." Journal of the Japan Society of Powder and Powder Metallurgy 42, no. 12 (1995): 1389–93. http://dx.doi.org/10.2497/jjspm.42.1389.

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Tönshoff, H. K., and C. Emmelmann. "Laser Cutting of Advanced Ceramics." CIRP Annals 38, no. 1 (1989): 219–22. http://dx.doi.org/10.1016/s0007-8506(07)62689-4.

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Kumar, A. Senthil, A. Raja Durai, and T. Sornakumar. "Yttria ceramics: cutting tool application." Materials Letters 58, no. 11 (April 2004): 1808–10. http://dx.doi.org/10.1016/j.matlet.2003.11.010.

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Sentoku, Eiichi, Keigo Yamada, Tatuo Nakagawa, and Makoto Nishi. "Stress Analysis around Cutting Edge in Machinable Ceramics Cutting." Journal of the Japan Society of Powder and Powder Metallurgy 50, no. 3 (2003): 172–76. http://dx.doi.org/10.2497/jjspm.50.172.

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Skanavi, Natalia. "Utilization of disperse metalworking wastes in the building ceramic production." E3S Web of Conferences 135 (2019): 01043. http://dx.doi.org/10.1051/e3sconf/201913501043.

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This work is aimed at studying of possibility to use disperse metalwork wastes for building ceramic products manufacture. We performed the overall study of the composition and properties of the steel waterjet cutting disperse wastes and their behavior as part of the ceramic paste and baked ceramics. We noticed a positive effect of the wastes’ additives on the ceramic properties for three types of polymineral clay raw materials: reduction of air and fire shrinkage, strength improvement at optimal wastes content in the mixture, possibility to get quality baked ceramics at 900-950°C, improvement of the material hydro physical properties and possibility to vary the products’ colors. The received results allowed us to make a conclusion about possibility to use the steel waterjet cutting disperse wastes in the building ceramic production as a polyfunctional component: effective thinning agent, fluxing agent and component for volume coloring.

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Grigoriev, Sergey Nikolaevich, Marina Volosova, Alexey Anatolevich Vereschaka, and Anton Seleznev. "High-Strength Ceramic Cutting Tools with Multipurpose Coatings for Highly Effective Processing of Tempered Steel." Advanced Materials Research 1064 (December 2014): 148–53. http://dx.doi.org/10.4028/www.scientific.net/amr.1064.148.

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The article considers new technological principles of designing of vacuum-plasma coatings for ceramics on the basis of Al203–TiC and Si3N4and the requirements for the following coatings: (Zr, Hf, Cr) N; (Ti, Cr) N; ZrN. Each of these coatings has specific features which can significantly improve working capacity of ceramics in various operation conditions. Technological process and the equipment for deposition of coating on ceramic samples and cutting plates are developed. Undertaken studies of the coatings deposited according to the developed technological principles, show ability to increase considerably beam strength of the samples from oxide-carbide and nitride ceramics. The article shows the possibility to replace grinding operation of details of bearings from tempered steels like ShH15SG type (62 ... 65HRC) to turning by the cutting tools equipped with plates from Al203-TiC ceramics with a coating (Zr, Hf, Cr)N.

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Lanna, M. A., A. M. Abrão, F. Levy Neto, Claudinei dos Santos, and Cosme Roberto Moreira Silva. "Evaluation of Silicon Nitride Ceramic Cutting Tools with Diamond Coatings." Materials Science Forum 591-593 (August 2008): 537–42. http://dx.doi.org/10.4028/www.scientific.net/msf.591-593.537.

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There is a substantial increase on carbon-carbon composites use for engineering applications, considering its high temperature properties and low specific mass. However the machining costs are relatively high, and new cutting tools, mainly ceramics, must be developed to overcome such difficulty, aiming cost reductions. In this work, silicon nitride based ceramics has been prepared , by pressureless sintering of silicon nitride powders and appropriate amounts of Al2O3,Ce2O3, Y2O3 and AlN. Cutting tools were prepared from the sintered materials, with geometry according to ISO1832. Selected cutting tools were also diamond coated by a hot filament-assisted Chemical Vapor Deposition (HFCVD) diamond coating process. Carbon Fiber Reinforced Carbon (CFRP) composites machining was performed, to evaluate the diamond coating influence on machining performance. After the tests, the uncoated tools presented severe flank wear and shorter life than the diamond coated ceramic tools. This flank wear is caused by the abrasive carbon powder generated during the facing operation. On CVD diamond coated α-SiAlON ceramic tools, no flank wear was observed, and the cutting edge remained unmodified, even for severe test conditions, such as high cutting length and speed. Carbon particles, originated from the machined composite, do not promotes diamond film rupture, but instead, acts as lubricant film and reduces composite surface initial roughness.

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Huang, Chuan Zhen, Bin Zou, and Han Lian Liu. "Development of Self-Toughening Silicon Nitride Matrix Nanocomposite Ceramic Tools and Cutting Performance." Key Engineering Materials 375-376 (March 2008): 128–32. http://dx.doi.org/10.4028/www.scientific.net/kem.375-376.128.

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A series of self-toughening silicon nitride matrix nanocomposite ceramic tool materials are fabricated by hot-press technology at different sintering processes. And their microstructure has been observed and analyzed by a scanning electron microscope (SEM). Finally, the tests of mechanical properties and the cutting performance of the new ceramics are presented. The research results showed that the nanocomposite ceramic tool materials GGW20T5 and GGW20TC25 have better mechanical properties and possess a stronger wear resistance in cutting 40Cr alloy steel.

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Liu, Guo Zhi, Ke Zhang, Yu Lan Tang, Hong Sun, and Hai Yan Gao. "Nano-Process of SiC Ceramics by Molecular Simulation." Advanced Materials Research 189-193 (February 2011): 3097–102. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3097.

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SiC ceramics have been widely used in a variety of areas due to the excellent physical and chemical properties. However, the process of SiC ceramics is difficult and high-cost, molecular simulation is an effective and feasible method to study the nano-process of SiC ceramics. In this paper, a molecular model is presented to simulate the stress and energy in the nano-cutting of SiC ceramics. The influences of the cutting depth and cutting speed on the kinetic energy and potential are analyzed. The results show that potential energy increases with the decrease of the cutting depth. Kinetic energy increases with the increase of the cutting speed. The results are very helpful for improvement the level of ultra-precision processing and nano-processing of brittle ceramics.

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Reddy, Moola Mohan, Alexander Gorin, and Khaled A. Abou-El-Hossein. "Development of Cutting Force Model of Aluminum Nitride Ceramic Processed by Micro End Milling." Applied Mechanics and Materials 87 (August 2011): 223–29. http://dx.doi.org/10.4028/www.scientific.net/amm.87.223.

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Advanced ceramics are difficult to do machining due to brittle nature. High cutting forces will generate in the machining, which will affect the surface integrity of final product. Selection of proper machining parameters is important to obtain less cutting force. The present work deals with the study and development of a cutting force prediction model in end milling operation of Aluminum Nitride ceramic. The cutting force equation developed using Response Surface Methodology (RSM) to analyze the effect of Spindle speed, feed rate and axial depth of cut. The cutting tests were carried under dry condition using two flute square end micro grain carbide end mills.

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Schubert, Andreas, Henning Zeidler, Ralf Kühn, and Matthias Hackert-Oschätzchen. "Microelectrical Discharge Machining: A Suitable Process for Machining Ceramics." Journal of Ceramics 2015 (August 31, 2015): 1–9. http://dx.doi.org/10.1155/2015/470801.

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Today ceramics are used in many industrial applications, for example, in the biomedical field, for high-temperature components or for cutting tools. This is attributed to their excellent mechanical and physical properties, as low density, high strength, and hardness or chemical resistance. However, these specific mechanical properties lead to problems regarding the postprocessing of ceramics. In particular, cutting processes require expensive tools which cause high manufacturing costs to machine ceramics. Consequently, there is a demand for alternative machining processes. Microelectrical discharge machining (micro-EDM) is a thermal abrasion process which is based on electrical discharges between a tool and a workpiece. The advantages of micro-EDM are more and more in focus for ceramic machining. These advantages include the process of being a noncontact technology, an independency of material brittleness and hardness, a low impact on the material, and the achievable microstructures. This paper presents the current state of investigations regarding micro-EDM of ceramics. Beside the process principle of EDM, the used procedures for machining ceramics and insulating ceramics are described. Furthermore several machining examples are presented to demonstrate the possibilities of the micro-EDM process with regard to the machining of ceramics.

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Volosova, Marina A., Vladimir D. Gurin, Anton E. Seleznev, Leonid E. Shvartsburg, and Mariuch Jenek. "Real-Time Simulation of Force Parameters for Diagnostics of Ceramic Tool Condition During Milling of High-Hardness Steel Parts." EPJ Web of Conferences 224 (2019): 05004. http://dx.doi.org/10.1051/epjconf/201922405004.

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Cutting ceramics is a high-performance tool material for high-speed machining of hard steels and alloys. Ceramic materials have high hardness and heat resistance in a wide range of temperatures, as well as chemical passivity in relation to most of the workpieces. However, the wider application of ceramic cutting tools is limited due to the low reliability - unpredictable fragile fracture of the cutting edge in different periods of operation. The study discusses mathematical simulations of force parameters in the milling of hardened steels using ceramic cutting tools. The simulation results were used to develop a system for the metalworking technological system state diagnostics. Mathematical software for calculations of the set of force parameters through computer simulations with taking into account the tool wear has been developed. The developed system allows calculating and graphically displaying a set of force parameters appearing during face milling of hardened steels in the real-time.

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Zhang, Ke, Guo Zhi Liu, Hai Yan Gao, Hong Sun, Yu Lan Tang, Yu Lan Tang, and Yu Hou Wu. "Effect of Machining Parameters on Nano-Cutting of SiC Ceramics." Advanced Materials Research 472-475 (February 2012): 1069–73. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.1069.

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SiC ceramics is very promising to be widely applied due to the excellent physical and chemical properties.However, the very difficult process of SiC ceramics hinders its application. In this paper, the nano-cutting of SiC ceramics is simulated based on molecular dynamics. The influences of the tool rake and cutting depth on the cutting force, the kinetic energy and potential are analyzed. The results show that the cutting force, system kinetic energy and potential energy increase firstly,reach the maximum, and then decrease in the process; with the increase of the tool rake, the cutting force and the kinetic energy decrease; with the increase of the cutting depth, the cutting force increases, and the kinetic energy and the potential energy decreases. These results are very helpful to understanding the process mechanism of SiC ceramics and increasing its process efficiency

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39

Terrones-Saeta, Juan María, Jorge Suárez-Macías, Francisco Antonio Corpas-Iglesias, Valentyn Korobiichuk, and Volodymyr Shamrai. "Development of Ceramic Materials for the Manufacture of Bricks with Stone Cutting Sludge from Granite." Minerals 10, no. 7 (July 10, 2020): 621. http://dx.doi.org/10.3390/min10070621.

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The manufacture of bricks for building purposes consumes large quantities of virgin materials, such as clay. On the other hand, the ornamental stone processing industry produces a huge amount of stone cutting sludge in its process. Therefore, this study presents the development of ceramic materials for the manufacture of bricks with stone cutting sludges, more specifically from granite. For this purpose, the physical properties of the stone cutting sludge and the chemical composition were mainly analyzed. Subsequently, different groups of ceramic samples were conformed and sintered with various combinations of clay and of stone cutting sludges. The conformed samples were evaluated with different physical tests and with the compressive strength test. The addition of stone cutting sludges to the ceramics reflected the creation of a material with lower density and higher porosity. The compressive strength of the different groups reflected a maximum allowable percentage of stone cutting sludges incorporation of 70%. Therefore, ceramic materials were developed with stone cutting sludges, developing a sustainable, lighter material with acceptable mechanical and physical characteristics. Avoiding the deposition of a polluting waste in a landfill and at the same time avoiding the extraction of new virgin materials.

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40

Cheng, Xiaoliang, Chunyang Zhao, Hailong Wang, Yang Wang, and Zhenlong Wang. "Mechanism of irregular crack-propagation in thermal controlled fracture of ceramics induced by microwave." Mechanics & Industry 21, no. 6 (2020): 610. http://dx.doi.org/10.1051/meca/2020077.

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Microwave cutting glass and ceramics based on thermal controlled fracture method has gained much attention recently for its advantages in lower energy-consumption and higher efficiency than conventional processing method. However, the irregular crack-propagation is problematic in this procedure, which hinders the industrial application of this advanced technology. In this study, the irregular crack-propagation is summarized as the unstable propagation in the initial stage, the deviated propagation in the middle stage, and the non-penetrating propagation in the end segment based on experimental work. Method for predicting the unstable propagation in the initial stage has been developed by combining analytical models with thermal-fracture simulation. Experimental results show good agreement with the prediction results, and the relative deviation between them can be <5% in cutting of some ceramics. The mechanism of deviated propagation and the non-penetrating propagation have been revealed by simulation and theoretical analysis. Since this study provides effective methods to predict unstable crack-propagation in the initial stage and understand the irregular propagation mechanism in the whole crack-propagation stage in microwave cutting ceramics, it is of great significance to the industrial application of thermal controlled fracture method for cutting ceramic materials using microwave.

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Kuruc, Marcel, and Jozef Peterka. "Behavior of Rotary Ultrasonic Machining of Ceramic Materials at a Wide Range of Cutting Speeds." Machines 9, no. 8 (August 11, 2021): 164. http://dx.doi.org/10.3390/machines9080164.

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The paper deals with the behavior of the rotary ultrasonic machining process at different cutting speeds of ceramic materials. This process is relatively new; therefore, there are gaps in information about its behavior at near-critical parameters. We adjusted cutting speeds 10 times lower and 10 times higher than the recommended one. The observed parameters were machine load, tool wear, and surface roughness. Alumina and zirconia ceramics were used as materials. The results will help with the optimization of the cutting parameters of the rotary ultrasonic machining process.

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42

Demarbaix, Anthonin, François Ducobu, Nicolas Preux, Fabrice Petit, and Edouard Rivière-Lorphèvre. "Green Ceramic Machining: Influence of the Cutting Speed and the Binder Percentage on the Y-TZP Behavior." Journal of Manufacturing and Materials Processing 4, no. 2 (May 21, 2020): 50. http://dx.doi.org/10.3390/jmmp4020050.

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The demand for inert bioceramics is always increasing in the dental field. Yttrium oxide tetragonal zirconia polycrystals (Y-TZP) are oxide ceramics which are currently used because of their interesting mechanical properties due to a toughening transformation. Industrially speaking, machining of the ceramic before sintering (green body) is very common because it allows a better productivity and it reduces crack probability during the sintering process. The goal of this paper is to determine the behavior of green ceramic during the machining operation. This study is carried out on several blanks with different binder percentages. The specific cutting energy (SCE) and the surface quality (Ra and Rz) are determined for several cutting speeds. The SCE follows a logarithmic evolution when the cutting speed increases. Despite this increase, the Ra are relatively stable whatever the cutting speed and the binder percentage. At a low cutting speed, a higher Rz value is observed caused by pullout of material. The increase of cutting speed allows to stabilize the Rz value whatever the binder percentage. This study shows that the green ceramic has a pseudo-plastic behavior whose machinability depends mainly on the interaction between the material and the cutting edge of the tool, so unlike pre-sintered ceramic or metallic part cutting speed has a low influence on the quality of the machined part.

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43

Modest, Michael F., and Thomas M. Mallison. "Transient Elastic Thermal Stress Development During Laser Scribing of Ceramics." Journal of Heat Transfer 123, no. 1 (September 11, 2000): 171–77. http://dx.doi.org/10.1115/1.1332779.

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Lsaers are emerging as a valuable tool for shaping and cutting hard and brittle ceramics. Unfortunately, the large, concentrated heat flux rates that allow the laser to efficiently cut and shape the ceramic also result in large localized thermal stresses in a small heat-affected zone. These notable thermal stresses can lead to micro-cracks, a decrease in strength and fatigue life, and possibly catastrophic failure. In order to assess where, when, and what stresses occur during laser scribing, an elastic stress model has been incorporated into a three-dimensional scribing and cutting code. First, the code predicts the temporal temperature fields and the receding surface of the ceramic. Then, using the scribed geometry and temperature field, the elastic stress fields are calculated as they develop and decay during the laser scribing process. The analysis allows the prediction of stresses during continuous wave and pulsed laser operation, a variety of cutting speeds and directions, and various shapes and types of ceramic material. The results of the analysis show substantial tensile stresses develop over a thick layer below and parallel to the surface, which may be the cause of experimentally observed subsurface cracks.

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44

Xing, Ai, Zhao Jun, Huang Chuanzhen, and Zhang Jianhua. "Development of an advanced ceramic tool material—functionally gradient cutting ceramics." Materials Science and Engineering: A 248, no. 1-2 (June 1998): 125–31. http://dx.doi.org/10.1016/s0921-5093(98)00502-4.

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45

Tian, X. L., Fang Guo, Ya Tao Mao, B. G. Zhang, Jian Quan Wang, and A. Y. She. "Investigation on Tool Wear about High Efficient Axial Turning-Grinding of Engineering Ceramics." Advanced Materials Research 426 (January 2012): 89–92. http://dx.doi.org/10.4028/www.scientific.net/amr.426.89.

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Axial turning-grinding is a processing method to cut cylindrical workpiece or inner surface of hole along its axis, using the kinetic energy of high-speed rotation annularity tool, the abrasives in tool tip as the main cutting edge to remove materials and the abrasives in the outside surface of tool as a minor cutting edge to sharpen the processed surface. And the cutting thickness and feed rate could be more than 5~10mm and 200mm/min respectively in a cutting, realizing high-efficiency, low-cost processing of engineering ceramics. Using the method, the ceramic sleeve of delivery valve precision coupling components in the engine is processed with high efficiency, and tool wear was researched with single factor test. The result indicated that the ratio of spindle speed and workpiece speed should be within a certain range in order to minimize tool wear, and tool wear increases with the increase of cutting depth, but not a linear relation.

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46

Ho, Ching Yen, Mao Yu Wen, and Shih Yu Lin. "A Quasi-Steady-State Thermal Model for Laser-Assisted Cutting of Zirconia Ceramics." Key Engineering Materials 364-366 (December 2007): 1003–8. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.1003.

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This study has developed a thermal model for laser-assisted cutting of zirconia ceramics. Laser-assisted cutting can increase ceramics removal rates by utilizing a localized heat source to elevate the workpiece temperature prior to material removal with traditional cutting tool. At high temperatures the yield strength of ceramics can decrease below the fracture strength, changing the material deformation behavior from brittle to ductile and enabling the use of a single point cutting tool to remove material at rates approaching those of metal cutting. A thermal model has been developed for the workpiece of ceramics cylinder rotating with a constant speed, which was preheated by a laser and cut by cutting tool. Since the cutting tool followed the moving laser with a fixed distance in the axial direction, i.e. the feed rate of the cutting tool was the same as the moving velocity of the laser, this thermal model has been formulated in a cylindrical coordinate system that moved with the laser beam or cutting tool and therefore, this problem was a quasi-steady-state problem. An analytical solution for this thermal model has been obtained. The results calculated by this model agree with the available experimental data. The temperature field is presented during laser-assisted cutting of ceramics. The effects of feed rate and laser power on temperature field are also discussed in this study.

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47

GOTO, Hidekazu, Hachiro TSUCHIYA, and Hidenao KATAOKA. "Reactive Gas Plasma Cutting of Ceramics." Journal of The Japan Society of Electrical Machining Engineers 25, no. 50 (1991): 13–22. http://dx.doi.org/10.2526/jseme.25.50_13.

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48

Kubíková, B., and J. Cibulková. "Alumina-Based Ceramics for Cutting Application." Solid State Phenomena 90-91 (April 2003): 63–68. http://dx.doi.org/10.4028/www.scientific.net/ssp.90-91.63.

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49

Kumabe, J., K. Fuchizawa, T. Soutome, and Y. Nishimoto. "Ultrasonic superposition vibration cutting of ceramics." Precision Engineering 11, no. 2 (April 1989): 71–77. http://dx.doi.org/10.1016/0141-6359(89)90055-x.

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50

Meng, J. F., Jian Feng Li, Pei Qi Ge, and R. Zhou. "Research on Endless Wire Saw Cutting of Al₂O₃/TiC Ceramics." Key Engineering Materials 315-316 (July 2006): 571–74. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.571.

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This article investigates the cutting of Al2O3/TiC ceramics using a fixed abrasive diamond endless wire. The effect of wire speed and feed rate on material removal rate, cutting force, surface roughness and wire wear is investigated. The cut surface of Al2O3 /TiC ceramics is studied. This study demonstrates the advantage of fixed abrasive diamond endless wire cutting of Al2O3/TiC ceramics.

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Journal articles on the topic 'Ceramics cutting'

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