DOI: https://doi.org/10.32515/2664-262X.2021.4(35).54-62
Restoration of Piston Pins by Hot Plastic Deformation
About the Authors
Yuriy Kuleshkov, Professor, Doctor in Technics (Doctor of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: kul090455@gmail.com, ORCID ID: 0000-0001-6492-6919
Timofey Rudenko, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: r-t-v@mail.ua, ORCID ID: 0000-0001-6879-7624
Mykhailo Krasota, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: krasotamv@ukr.net, ORCID ID: 0000-0001-8791-3264
Ruslan Osin, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: ruslan_osin@ukr.net, ORCID ID: 0000-0002-8927-5363
Vasyl Reva, master, Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine
Abstract
The aim of the study is to create a theoretical basis that allows to calculate the forces of hot plastic deformation of the piston pin.
One of the promising methods of restoring the piston fingers of the connecting rod - piston group of internal combustion engines is the method of hot plastic deformation. The process of restoring the piston fingers by hot plastic deformation can increase their strength and, in particular, fatigue strength. When developing the technological process of restoration of piston fingers using the method of hot plastic deformation by distributing it with a punch in the stamp, there is a problem of determining the effort required for high-quality deformation process. The article offers the theoretical basis for calculating the deformation forces. The result was obtained on the basis of the selected scheme of formation.
As a result of the calculations we can conclude:
1. Restoration of the piston finger by hot plastic deformation allows to restore 95% of the fingers which have arrived in repair.
2. Piston fingers restored by hot plastic deformation in their technical parameters are not inferior to the new, achieved - "healing" of microcracks, creating internal compressive stresses, and grinding grain, which strengthens the material of the piston finger, in particular increasing its fatigue strength by 15… 20% .
3. As a result of theoretical studies of the resistance of the metal to plastic deformation were obtained dependences of the specific force on the punch depending on the ratio of the diameters of the workpiece.
Keywords
hot plastic deformation, punch, deformation force
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References
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Copyright (c) 2021 Yuriy Kuleshkov, Timofey Rudenko, Mikhail Krasota, Ruslan Osin, Vasyl Reva
Restoration of Piston Pins by Hot Plastic Deformation
About the Authors
Yuriy Kuleshkov, Professor, Doctor in Technics (Doctor of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: kul090455@gmail.com, ORCID ID: 0000-0001-6492-6919
Timofey Rudenko, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: r-t-v@mail.ua, ORCID ID: 0000-0001-6879-7624
Mykhailo Krasota, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: krasotamv@ukr.net, ORCID ID: 0000-0001-8791-3264
Ruslan Osin, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: ruslan_osin@ukr.net, ORCID ID: 0000-0002-8927-5363
Vasyl Reva, master, Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine
Abstract
Keywords
Full Text:
PDFReferences
1. Bisikenov, А.B. (1976). Analiz sposobov vostanovleniy avtotraktornuh shesteren [The analysis of the methods of recovery of automotive gears]. Remont selskohozystvennoy tehniki i nadezhnost – Agricultural Machinery Repair and Reliability. Vol. 76. 58-70. [in Russian].
2. Kirillov, А.В. (1982). Analiz tehnologicheskih processov vostanovleniy zubchatuh kolyos s neravnomernum iznosom po dline zuba [Analysis of technological processes for restoring gears with uneven wear along the length of the teeth]. Remont traktorov i s/h mashin – Repair of Tractors and Agricultural Machines. Saratov. 78-830. [in Russian].
3. Pashin, U.D. & Kirillov, А.В. (1982), Vosstovlenie culindricheskih zubchatuh kolyos [Restoration of cylindrical gears]. Stepnue prostoru – Steppe Expanses. 9. 52 [in Russian].
4. Kuzmenkov, О.I. & Karabanov, F.F. (1980). Progressivnuye metodu vosstanovleniy zubchatuh kolyos [Progressive gear recovery methods]. Obzornay informaciy. Seriy: Mashinostroenie I metaloobrobotka Belorusskiy NIINTI i TEI Gosplana BSSR MinskS 22. [in Russian].
5. Kuzmenko О.I. Tetoreticheskie osnovu vosstanovleniy formu i mehanocheskih svoystv tvurduh tel rotacionnum plasticheskim deformirovaniem [Theoretical foundations of restoring the shape and mechanical properties of solids by rotational plastic deformation]. Sovremennoe oborudovanie i tehnologicheskie processu dly vosstanovleniy iznoshenuh detaley mashin: tezisu dokladov na NTK stran –chlenov SEV i SFRU ("Remdetal-83”), 2. pp. 20-22. [in Russian].
6. Kovalchuk U.М., Klimin В.I., Brusencov А.I. Tehnologiy i ustanovka dly vosstanovleniy valov- shesteren gidronasosov tipy NSh [Technology and installation for restoring the gear shafts of hydraulic pumps of the NSH type]. Sovremennoe oborudovanie i tehnologicheskie processu dly vosstanovleniy iznoshenuh detaley mashin: tezisu dokladov na NTK stran –chlenov SEV i SFRU ("Remdetal-83”), Мoskow.: CNIITEI, 2. pp. 19-20. [in Russian].
7. Klimkin, В.I., Grebelnik, М.P. & Savchuk, S.А. (1985). Vosstanovlenie shesteren gidronasosov metodom plasticheskoy deformacii [Restoration of hydraulic pump gears by plastic deformation method]. Tehnologiy i organozciy proizvodstva – Technology and Organization of Production. Мoskow CIITEI Goskomcelhoztehniki. 3. 50-51. [in Russian].
8. Tomsen Z., Yang I. & Kobayashi Sh. (1969). Mehanika plasticheskih deformaciy pri obrabotke metallov [Mechanics of plastic deformations in metal processing]. Мoskow: Mashinostroenie [in Russian].
9. Ctopanskiy, L.G. (1979). Raschet processov obrabotki metallov davleniem [Calculations of metal forming processes]. Мoskow: Mashinostroenie [in Russian].
10. Storozhev, М.V. & Popov, Е.А. (1977). Teoriy obrabotki metallov davleniem [Theory of metal forming]. Мoskow: Mashinostroenie [in Russian].
11. Taranovskiy, I.Y., Pozdeev, А.А. & Ganago, О.А.. (1963). Theory of metal forming. I.Y.Taranovskogo (Ed.). Мoskow: Metalurgizizdat [in Russian].
12. Unksov, Е.P., Dzhonson, U. & Kolmogorov, V.L.. (1983). Teoriy plasticheskih deformaciy metallov [Theory of plastic deformations of metals]. Е.P. Unksov, А.G.Ovchinnikova (Ed.). Мoskow. Mashinostroenie [in Russian].
13. Henzel A. & Shpigel Т. (1982). Raschet energosilovuh parametrov v processah obrabotki metallov davleniem [Calculation of energy-power parameters in metal forming processes]: Sprav. izd. Мoskow. Metalurgiy [in Russian].
14. Fillimonov, V. I. & Fillimonov, О. V. (2012). Teoriy obrabotki metallov davleniem [Theory of metal forming]: uchebnoe posobie . Ulianovsk : UlGTU [in Russian].
15. Tomlenov, А.D. (1972). Teoriy plasticheskogo deformirovaniy metallov [Theory of plastic deformation of metals]. Moskow: Metalurgiy [in Russian].