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Vibrations in engineering and technology

space SCIENTIFIC JOURNALS OF VINNITSA NATIONAL AGRARIAN UNIVERSITY

Issue №: 1(104)

Published: 2022.04.29
DOI: 10.37128/2306-8744-2022-1


Description:
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.

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EVALUATION OF DEFORMABILITY OF MATERIAL OF PREPARATIONS IN DIRECT AND REVERSE EXTRACTION BY ROLLING STAMPING METHOD

DOI: 10.37128/2306-8744-2022-1-10
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Matviychuk Viktor – Doctor of Technical Sciences, Full Professor, Head of the Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3 Solnechna St., Vinnitsa, 21008, Ukraine, email: vamatv50@gmail.com)

Mikhalevich Volodymyr – Doctor of Technical Sciences, Full Professor, Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3 Solnechna St., Vinnitsa, 21008, e-mail: mykhalevych@vntu.edu.ua)

Kolisnyk Mykola – Assistant Professor, Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3, Solnechna str., Vinnitsa, 21008, Ukraine, email: kolisnik30@gmail.com).

 

Annotation

The article presents the results of development and research of various technological schemes of the process of stamping by rolling cylindrical and conical rolls to obtain complex profile workpieces. It is shown that the achievement of significant dimensions of the various elements of the workpiece is possible by providing a directed flow of metal by changing the relative position of the roll and the workpiece. The most effective rolling operations are landing, settling, unloading, reverse and direct extrusion. The paper focuses on the analysis of operations of reverse and direct extrusion to obtain complex profile blanks with developed, including thin-walled elements. Since the technological capabilities depend on the deformability of the material, the analysis of the stress-strain state of the workpieces was performed using the method of grids, hardness measurement and microstructural analysis. The main result of the analysis was the construction of ways to deform the particles of the workpiece material in the coordinates "deformation intensity - stress index". Zones of blanks that are deformed in the conditions of "rigid" stress state are established, therefore for these zones the deformability of metals was assessed using the criteria of phenomenological theory. In addition, the assessment of deformability was also performed for areas with the maximum degree of deformation of the material. The manufacture of thin-walled elements of the workpiece, using the operation of reverse extrusion, is accompanied by the appearance of significant contact stresses. To prevent the roll from being pushed out of the workpiece and forming elements with a constant thickness, support rollers should be provided. In the case of direct extrusion, the increase in contact stresses requires the application of additional measures to increase the strength of the tool.

Keywords: complex profile workpiece, rolling stamping, cylindrical and conical rolls, direct and reverse extrusion, stress-strain state, deformability.

List of references

1. Shtuts A., Kolisnyk M., Yavdyk V. (2018) Іmprovement of processes of rolling stamping on the basis of investigation of technological parameters on the mechanics of workpieces’ formation. MOTROL Commission of Motorization and Energetics in Agriculture. 1(20), 19 – 25. Lublin [in Poland].

2. Matviychuk, V. A., Alyev, Y. S. (2009). Sovershenstvovanye protsessov lokalnoi rotatsyonnoi obrabotky davlenyem na osnove analyza deformyruemosty metallov: Monohrafyia. Kramatorsk. DHMA. [in Ukranian].

3. Kaletnik, H. M. (2013). Osnovy inzhenernykh metodiv rozrakhunkiv na mitsnist i zhorstkist. Kyiv. «Hai Tek Pres». [in Ukranian].

4. Kraievskyi V. O., Matviychuk, V. A., Mykhalevych, V. M. (2003). Vplyv tekhnolohichnykh parametriv na kinematyku kholodnoho tortsevoho rozkochuvannia. Udoskonalennia protsesiv ta obladnannia obrobky tyskom v mashynobuduvanni i metalurhii. Kramatorsk - Sloviansk. 286-291. [in Ukranian].

5. Matviychuk V.A., Kolisnyk M.A., Shtuts A.A. (2018). Investigation of the stress-strain state of the workpiece material during direct extrusion by rolling stamping. Engineering, energy, transport of agro-industrial complex. № 3 (102). 77-84. [in Ukrainian].

6. Shtuts, A., Kolisnyk, M., Vydmysh, A., Voznyak, O., Baraban, S. Kulakov, P. (2020). Improvement of stamping by rolling processes of pipe and cylindrical blades on experimental research. Key engineering materials. 844. 168–181. [in Switzerland].

7. Matviychuk V.A., Lyubin M.V., Kolisnyk M.A. (2018). Development and research of processes of stamping by rolling of difficult profile preparations. Engineering, energy, transport of agro-industrial complex. № 4 (103). 56-63. [in Ukranian].

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10. Karnaukh Sergii G., Markov Oleg E., Aliieva Leila I., Kukhar Volodymyr V. (2020). Designing and researching of the equipment for cutting by breaking of rolled stock. The International Journal of Advanced Manufacturing Technology. 109. 9-12. 2457–2464. [in English]

 

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About journal

Topics of the journal:

The journal "Vibrations   in engineering  and technology" presents materials on the following issues

• Theory of processes and machines
• Mechanical Engineering and materialprocessing
• Processing and food production

Key information:
ISSN (print): 2306-8744
DOI: 10.37128/2306-8744

The certificateof massmediaState registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University

Kind of publication: journal
Type of publication : Scientific
Publication status: Domestic
Year of founding:
Periodicity: 4 times a year
Extent: 18.75 nominal printed pages
ISSN: 2306-8744 (printed version), (online)
Language of edition  : (mixed languages) Ukrainian, English
The scope of the distribution and the category of readers: national, foreign, teaching staff, scientists, businessmen.
Periodical is included in the list of scientific professional editions of Ukraine approved by the Order of Ministry of Education and Sciences of Ukraine from 21.12.2015 No. 1328.
The journal "Vibrations in engineering and technology" is included in the "Catalogue of periodicals of Ukraine".
Journal subscription can be executed in each post office department.
 Subscription Index is  99720.

 

Old version of site: http://vibrojournal.vsau.edu.ua/

History of journal:

In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published  94 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Kaletnik H.M  PhD , professor, academician NAAS is the chief editor of the "Vibrations in engineering  and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.