Definition of acceptable parameters of defects in basic details of forging and press machines

Cover Page

Abstract


In the Soviet Union, a unique worldwide industry was created for the serial production of forging equipment. Currently, even these machines that have served their design life are in working or maintainable condition. This has led to the fact that there is now a large market for the secondary sale of such machines, including in the countries of Southeast Asia and India. However, with the secondary sale of such equipment, some inevitable damage builds up in the basic parts. In addition, the first copies of such models, put up for secondary sale, were produced at a time when non-destructive testing methods were not developed. Some defects could be undetected. When buying a machine dismantle, transport, install and test. Cases were recorded when defects were strained during installation and testing in the base parts, which made it difficult or impossible to use such equipment. Sometimes this type of equipment (during modernization) is used to carry out technological operations that require more power than previously declared. Therefore, when buying/selling (or upgrading), it is necessary to draw up cards of permissible defects, which, when superimposed on the cards of the detected defects, will allow to reject/determine the remaining life/limit the technological strength of the crank machine so that defects during further operation are not affectted and do not lead to emergency situation. The methodology for determining the permissible parameters of subsurface elliptical cracks is shown on the example of a press bed KD2130 (BZMP).


About the authors

Anna V. Kornilova

Peoples’ Friendship University of Russia (RUDN University)

Author for correspondence.
Email: Kornilova_av@rudn.ru
6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation

Professor of Department of Civil Engineering, Academy of Engineering of RUDN University, Doctor of Technical Science, Docent

Kyaw Zaya

Moscow State University of Technology “STANKIN”

Email: Kornilova_av@rudn.ru
1 Vadkovskiy Lane, Moscow, 127055, Russian Federation

postgraduate of the Composite Materials Department of MSTU “STANKIN”

References

  1. Sivak BA, Kornilova AV. Opredelenie obshhej dolgovechnosti i ostatochnogo resursa detalej metallurgicheskih mashin [General durability and residual service life of machine parts]. Tyazheloe Mashinostroenie. 2005;3:9–11.
  2. Kornilov AV. Razrabotka metodov obespechenija dolgovechnosti silovyh detalej kuznechno-pressovyh mashin i instrumenta [Development of methods to ensure the durability of the power parts forging presses and tools] (Dissertation of Doctor of Technical Sciences). Moscow: MSTU “STANKIN”; 2009.
  3. Zdenek C. Effect of heat load on a forging press. Procedia Engineering. 2014;69:897–901.
  4. Zdenek C, Karel R. Effect of heat load on a mechanical forging press. Annals of DAAAM & Proceedings. 2016;27:344–348.
  5. Zdenek C, Karel R, Tomas K. Thermal analysis of the forging press LZK 4000. Annals of DAAAM & Proceedings. 2018;29:740–745.
  6. Paing Thet, Zaya Kyaw, Kornilova AV. Creation of a design methodology for crank punching machines of specified durability. IOP Conference Series. Materials Science and Engineering. 2019;675:012042.
  7. Makhutov NA. Generalized regularities of deformation and fracture processes. Herald of the Russian Academy of Sciences. 2017;87(3):217–228.
  8. Makhutov NA, Reznikov DO. Application of scenario analysis in the assessment of structural reliability of complex technical systems. Journal of Machinery Manufacture and Reliability. 2015;44(8):675–686.
  9. Burdukovsky VG, Kolmogorov VL, Migachev BA. Prediction of resources of materials of machine and construction elements in the process of manufacture and exploitation. Journal of Materials Processing Technology. 1995;55:292–295.
  10. Ovchinnikov AB. Priblizhennaja formula opredelenija kojefficientov intensivnosti naprjazhenij dlja tel s poverhnostnymi treshhinami [Approximate formula for determining stress intensity coefficients for bodies with surface cracks]. Problems of strength. 1986;11:44–47.
  11. Dragunov YG, Zubchenko AS, Kashirsky YV, Degtjarev AF, Zharov VV, Koloskov MM, Orlov AS, Skorobogatyh VN. Marochnik stalej i splavov [Database of steels and alloys.]. 4th ed. Moscow; 2014.
  12. Brandon DB. Developing mathematical models for computer control. Instrument Society of America (ISA) Journal. 1959;6:7.
  13. Dougherty K. Introduction to econometrics. 3rd ed. Moscow: INFRA-M Publ.; 2009.
  14. Tail G. Jekonomicheskie prognozy i prinjatie reshenij [Economic projections and decision-making]. Moscow: Statistika Publ.; 1977.
  15. Malkova MY, Zadiranov AN. Primenenie universal'nogo ul'trazvukovogo reaktora dlja pererabotki koncentratov rud redkozemel'nyh metallov [Application of the universal ultrasonic reactor for processing of concentrates of ores of rare earth metals]. RUDN Journal of Engineering Researches. 2019;20(1):20–27.

Statistics

Views

Abstract - 260

PDF (Russian) - 51

Cited-By


PlumX


Copyright (c) 2019 Kornilova A.V., Zaya K.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies