STUDY OF THE OPERATING TIME OF THE PROTECTIVE COATING OF SURFACES OF ASSEMBLY AND WELDING EQUIPMENT
DOI:
https://doi.org/10.30837/2522-9818.2020.11.134Keywords:
assembly and welding equipment, protective coatings, welding spatter, protective film thickness, types of welding, likelihood of uptime, failure rate, failure intensity, life timeAbstract
The subject of the study is the issues related to determining the service life of protective coatings protecting the surfaces of assembly and welding fixtures from the effects of welding spatter and mechanical wear when performing certain assembly and welding operations of welded metal structures. The development in Ukraine of various industries, especially the precision engineering industry (instrument making), is characterized by a transition to market management methods, increasing demand for competitive and liquid products. This can be achieved by the systematic and rapid introduction of technically new products, improving their quality, increasing labor productivity, and automating production. Welded metal structures are widely used in the designs of modernized and new types of products, the high-quality production of which is impossible without the use of assembly and welding equipment. The reliability and durability of these devices depends on the protection of their surfaces to the effects of welding spatter and scoring during assembly and welding operations. Analytical and experimental studies of the resistance of protective coatings to an experimental welding drop of metal showed that of the most tested coatings, the most durable is the developed protective coating containing a mixture of molybdenum disulfide powder, graphite powder, epoxy varnish and certain solvents. Purpose: determination of the service life of the developed protective coating when exposed to a number of significant factors, including the effects of real welding spatter. Tasks: to identify the main - significant technological factors affecting the service life of the protective coating; develop a planning matrix based on a full factorial experiment; to conduct experimental studies of the resistance of the coating to the effect of an experimental metal drop under the influence of significant technological factors, to obtain the equations of regression of resistance; conduct analytical and experimental studies to determine the temperature of the experimental drop of molten metal; conduct analytical studies of the temperature of a real welding spray; conduct a study of the resistance to friction; conduct analytical studies to determine the quantitative characteristics of the reliability and durability of the proposed coating composition. Results: the article presents the research data by the authors of the service life of the proposed protective coating that protects the surfaces of assembly and welding fixtures when exposed to welding spatter and coating wear when moving metal structures in the fixture. The quantitative characteristics of the reliability and durability of the coating are obtained. Conclusions: A methodology has been developed for determining the service life of protective coatings protecting the surfaces of assembly and welding fixtures from the effects of welding spatter during welding operations and coating wear when moving elements of the welding structure in the fixture during assembly.
References
Zholtnevich, N. D., Podobedov, V. V., Romenskiy, V. I. (2000), "Tooling for serial production of welded structures" ["Tekhnologicheskaya osnastka dlya seriynogo proizvodstva svarnykh konstruktsiy"], Proceedings of the State Aerospace University, NOT, Zhukovsky KhAI "Aerospace Engineering and Technology, Issue 14, P. 102–104.
Podobedov, V. V., Romenskiy, V. I. (2000), "Prospect state and the concept of development of assembly and welding equipment in mechanical engineering. International scientific and technical collection" ["Sostoyaniye perspektivy i kontseptsiya razvitiya sborochno-svarochnoy osnastki v mashinostroyenii"], Cutting and tooling in technological systems of KHGPU, Issue 58, P. 34–38.
Zholtnevich, N. D., Filatov, L. S., Glushchenko, V. I., Romensky, V. I. et al. (1982), "Universal-assembly fixtures with grooves of 8, 12 and 16 mm for assembly and welding operations" ["Universal'no-sbornyye prisposobleniya s pazami 8, 12 i 16 mm dlya sborochno-svarochnykh rabot"], Central Research Institute of Information, P. 5–75.
Romenskiy, V. I., Yashkov, I. O. (2015), "Development of a parametric model for creating a module for automated assembly and welding equipment in the manufacture of electronic devices" ["Razrabotka parametricheskoy modeli dlya sozdaniya modulya avtomatizirovannoy sborochno-svarochnoy osnastki pri proizvodstve izdeliy radioelektronnogo priborostroyeniya"], Instrumentation Technology, No. 2. P. 47–53.
Romenskiy, V., Nevliudova, V., Persiyanova, E. (2019), "Technological methods of improving the reliability of storage and welding equipment in the production of radio-electronic device products", Innovative Technologies and Scientific Solutions for Industries, No. 4 (10), P. 120–133. DOI: https://doi.org/10.30837/2522-9818.2019.10.120.
Romenskiy, V. I., Podobedov, V. V. (1999), "Classification of factors affecting the durability of assembly and welding equipment" ["Klassifikatsiya faktorov, vliyayushchikh na dolgovechnost' sborochno-svarochnoy osnastki"], Collection "Vesnik" KHPU, Issue 63, P. 44–47.
Podobedov, V. V., Romenskiy, V. I., Zholtkevich, G. N. (2000), "Development of the optimal composition of the protective coating that protects the working surfaces of special assembly and welding equipment from the effects of welding spatter" ["Razrabotka optimal'nogo sostava zashchitnogo pokrytiya predokhranyayushchego rabochiye poverkhnosti spetsial'noy sborochno-svarochnoy osnastki ot vozdeystviya svarochnykh bryzg"], Bulletin of KhPGU, No. 104, P. 32–37.
Romenskiy, V. I., Lazarenko, A. P., Filatov, L. S. et al. (1982), Coating composition for surface protection against sticking of molten metal splashes [Sostav pokrytiya dlya zashchity poverkhnosti ot nalipaniya bryzg rasplavlennogo metalla], Copyright certificate No. 959963, Publ. in B.I., No. 32.
Podobedov, V. V., Romensky, V. I., Budyoniy, M. M., Borodinov, V. A. (2002), Method of testing and evaluation of protective coatings against the action of welding splashes [Sposib vyprobuvannya y otsinky zakhysnykh pokrytʹ vid diyi zvaryuvalʹnykh bryzok], Declaration Patent for Invention No. 46995 of June 17, 2002.
Podobedov, V. V., Budenny, M. M. (2000), "Determination of the resistance of the protective coating protecting the working surfaces of assembly and welding equipment from the effects of welding spatter" ["Opredeleniye stoykosti zashchitnogo pokrytiya, predokhranyayushchego rabochiye poverkhnosti sborochno-svarochnoy osnastki ot vozdeystviya svarochnykh bryzg"], High technology in machine-driven equipment of KSPU, Vol. 1, P. 194–199.
Romenskiy, V. I. (1976), "Investigation of the reliability and durability of surfaces of assembly-welding devices for welding production" ["Issledovaniye nadezhnosti i dolgovechnosti poverkhnostey sborochno-svarochnykh prisposobleniy dlya svarochnogo proizvodstva"], Bulletin of mechanical engineering, No. 11, P. 69–70.
Romenskiy, V. I., Zholtkevich, G. N. (1978), "Protection of surfaces of elements of universally prefabricated devices for assembly and welding production" ["Zashchita poverkhnostey elementov universal'no – sbornykh prisposobleniy dlya sborochno-svarochnogo proizvodstva"], Scientific and technical collection. Questions of defense technology. Series XVII, Issue 104, P. 67–71.
Romenskiy, V. I., Zholtkevich, G. N. (1981), "Investigation of the resistance of protective coatings to the effects of welding spatter and mechanical friction" ["Issledovaniye stoykosti zashchitnykh pokrytiy vozdeystviyu svarochnykh bryzg i mekhanicheskomu treniyu"], Production - technical bulletin, No. 11, P. 33–36.
Karmanov, V. G. (1975), Mathematical programming [Matematicheskoye programmirovaniye], Moscow : Nauka, No. 1. 272 p.
Podobedov, V. V., Romenskiy, V. I. (2000), "Study of the dispersion density of welding spatter on the working surfaces of assembly-welding equipment during welding operations" ["Issledovaniye plotnosti rasseivaniya svarochnykh bryzg na rabochiye poverkhnosti sborochno–svarochnoy osnastki pri vypolnenii svarochnykh operatsiy"], Bulletin of KHPTU, No. 110.
Nevlyudov, I. Sh. (2005), Fundamentals of Electronic Appliance Production [Osnovy vyrobnytstva elektronnykh aparativ] : A Textbook, Kharkiv, SMIT Company, 592 p.
Nevlyudov, I. Sh. (2017), Production Processes and Equipment of Automation Objects [Vyrobnychi protsesy ta obladnannya ob'yektiv avtomatyzatsiyi] : A Textbook for Students of Higher Educational Institutions, Krivoy Rog, Krivoy Rog College of NAU, 444 p.
Krivov, G. O., Zvorkin, K. O. (2012), Manufacture of welded structures [Vyrobnytstvo zvarnykh konstruktsiy], Kyiv : KVIT, 896 p.
Karpenko, A. S. (2005), Technological Equipment in Welding Production [Tekhnolohichna osnastka u zvaryuvalʹnomu vyrobnytstvi], Kyiv : Aristy, 268 p.
Dávid Michal, Peter Košťál, Šimon Lecký and Štefan Václav (2018), "Racionalization of Robotic Workstation in Welding Industry", Research Papers Faculty of Materials Science and Technology Slovak University of Technology, Vol. 26, Issue 42, P. 159–164. DOI: https://doi.org/10.2478/rput-2018-0019
Rodriquez et al, (2015), "Procedure for quality inspection of welds based on macro-photogrammetric three-dimensional reconstruction", Journal of Optics and Laser Technology, Vol. 73, P. 54–62.
Yusof, F., Jamaluddin, M. F. (2014), "Welding Defects and Implications on Welded Assemblies", Comprehensive Materials Processing, Vol. 6, P. 125-134. DOI: https://doi.org/10.1016/B978-0-08-096532-1.00605-1
Kah, P. and Martikainen, J. (2012), "Current trends in welding processes and materials: improve in effectiveness", Reviews on Advanced Materials Science, No. 30, P. 189–200.
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