|Journal||Journal of Mechanical Engineering – Problemy Mashynobuduvannia|
|Publisher||A. Podgorny Institute for Mechanical Engineering Problems
National Academy of Science of Ukraine
|ISSN||0131-2928 (Print), 2411-0779 (Online)|
|Issue||Vol. 22, no. 3, 2019 (September)|
|Cited by||J. of Mech. Eng., 2019, vol. 22, no. 3, pp. 57-62|
The influence of lubricating and cooling technological means on the destruction of metal during cutting is shown. It has been established that the most effective additives to lubricating and cooling technological means (LCTM) are aliphatic limiting polymers, namely polyethylene (PE) and polyvinyl chloride (PVC). Within the framework of ideas about the chemical activation of media, as well as the accumulated experimental materials of our own research, studies have been conducted on the qualitative description of sophisticated models related to the actual microstructure of the material and quantitative measurements of metal-hydrogen systems. Various aspects of the problem of mechanical energy and hydrogen influence on the restructuring of crystal lattices and the disruption of the interatomic bonding forces arising in ultramicroscopic regions are considered. An important problem is the model of interaction of hydrogen with the metal directly in the region of rearrangement and rupture of bonding forces between atoms. This model corresponds most adequately to the costs of opening a new surface, i.e. the final manifestation of the LCTV influence on the cutting process. The article describes the processes and phenomena that take place below the boundary of the highly deformable metal (chips) and the rest of the metal mass of the workpiece, as well as the peculiarities of the processes of transporting hydrogen from the plasma to the metal fracture zone. It has been established that in the microvolume of the material, the thermal energy produced in connection with the contact interactions of electrically active hydrogen particles with an electrically active real metal structure increases the frequency of thermal vibrations of material atoms and the probability of their rupture. Acting in conjunction with the mechanical energy, they facilitate the processes of deformation and destruction, and reduce the energy costs of cutting metal in various hydrocarbon LCTM. It is noted that the presence of hydrogen both in the chips and in the surface being treated was registered during the cutting of metal in any hydrogen-containing medium, even in water. However, the concentration of hydrogen in the metal workpiece, when the latter is processed in the medium with the addition of a polymer, is approximately two orders of magnitude higher than in the low molecular weight one. It is this fact that makes a significant advantage of LCTM with polymer additives.
Keywords: hydrogen, metal, processing, atom, proton, lubricating-cooling technological media (LCTM).
Full text: Download in PDF
- Soshko, A. I. & Soshko, V. A. (2008). Smazochno-okhlazhdayushchiye sredstva v mekhanicheskoy obrabotke metalla [Lubricating and cooling agents in metal machining. (Vols. 1, 2)]. Kherson: Izd-vo Oldi-plyus, 618 p. (in Russian).
- Soshko, V. A. & Soshko, A. I. (2015). Mekhanokhimicheskaya obrabotka metallov [Mechanochemical treatment of metals]. Latvia, LV-1039, Riga: LAMBERT Academic Publishing, 98 p. (in Russian).
- Kuleznev, V. I. & Shershnev, V. A. (1988). Khimiya i fizika polimerov [Chemistry and physics of polymers]. Moscow: Vysshaya shkola, 311 p. (in Russian).
- Likhtman, V. I., Shchukin, Ye. D., & Rebinder, P. A. (1962). Fiziko-khimicheskaya mekhanika materialov [Physico-chemical mechanics of materials]. Moscow: Izdatelstvo AN SSSR, 303 p. (in Russian).
- Fettes, Ye. (Eds). (1967). Khimicheskiye reaktsii polimerov [Polymer chemical reactions]: Textbook (Vols. 1, 2). Vol. 2. Moscow: Mir, 537 p. (in Russian).
- Zakrevskiy, V. A. (1971). Vysokomolekulyarnyye soyedineniya B 13 [High molecular weight compounds B 13]. Moscow: Russian Academy of Sciences, 105 p. (in Russian).
- Zakrevskiy, V. A. & Korsukov, V. Ye. (1972). Vysokomolekulyarnyye soyedineniya А 14 [High molecular weight compounds А 14]. Moscow: Russian Academy of Sciences, no. 4, 955 p. (in Russian).
- Kiryukhin, D. P., Zanin, A. M., Barelko, V. V., & Goldanskiy, V. I. (1981). Initsiirovaniye i samouskoreniye nizkotemperaturnykh khimicheskikh reaktsiy pri mekhanicheskom razrushenii obluchennykh tverdykh obraztsov [Initiation and self-acceleration of low-temperature chemical reactions during mechanical destruction of irradiated solid samples]. Doklady AN SSSR – Reports of the USSR Academy of Sciences, vol. 260, no. 6, pp. 1397–1402 (in Russian).
- Podurayev, V. N. (1974). Rezaniye trudnoobrabatyvayemykh materialov [Cutting difficult materials]. Moscow: Vysshaya shkola, 590 p. (in Russian).
- Roginskiy, S. Z. (1949). Osnovy teorii katalizatora. Problemy kinetiki i kataliza. VI. Geterogennyy kataliz [Basics of the theory of catalyst. Problems of kinetics and catalysis. VI. Heterogeneous catalysis]. Proceedings of the All-Union Catalysis Conference, Moscow, Leningrad, pp. 344–347 (in Russian).
- Akhmatov, A. S. (1963). Molekulyarnaya fizika granichnogo treniya [Molecular physics of boundary friction]. Moscow: Nauka, 472 p. (in Russian).
- Braun, D. M. & Deynton, F. S. (1966). Khimiya elektrona v kondensirovannykh sredakh: Khimicheskaya kinetika i tsepnyye reaktsii [Electron chemistry in condensed media: Chemical kinetics and chain reactions]. Moscow: Nauka, 482 p. (in Russian).
- Galaktionova, N. A. (1967). Vodorod v metallakh [Hydrogen in metals]. Moscow: Metallurgiya, 303 p. (in Russian).
- Alefeld, G. & Felklya, I. (1981). Vodorod v metallakh [Hydrogen in metals]. Moscow: Mir, 475 p. (in Russian).
- Akhmatov, A. S. (1963). Molekulyarnaya fizika granichnogo treniya [Molecular physics of boundary friction]. Moscow: Fizmatgiz, 472 p. (in Russian).
- Artsimovich, L. A. (1963). Elementarnaya fizika plazmy [Elementary plasma physics]. Moscow: Atomizdat, 577 p. (in Russian).
- Christy, R. W. & Pytte, A. (1965). The structure of matter: An introduction to modern physics. New York – Amsterdam: W. A. Benjamin, INC.
Received 27 March 2019
Published 30 September 2019