Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Nikolaj Ganev"'
Publikováno v:
Metals, Vol 14, Iss 3, p 290 (2024)
Railway wheels are usually attached to axles by press-fitting; therefore, the mechanical processes taking place during operation can result in failure, with fatal consequences for the axle seats. This manuscript describes the effect of laser hardenin
Externí odkaz:
https://doaj.org/article/b3a7bd4fafc6418a8326de799528f260
Publikováno v:
Applied Sciences, Vol 14, Iss 4, p 1511 (2024)
This study deals with two different aspects of the high-strength low-alloyed 1100 MC steel. The first is associated with the remarkable heterogeneity (linked with surface decarburization) in the surface state produced during sheet rolling with respec
Externí odkaz:
https://doaj.org/article/b850fd3db8fc45cb99a1701e9f399d8b
Publikováno v:
Materials, Vol 16, Iss 4, p 1709 (2023)
This paper investigates the influence of cutting speed and flank wear on the depth profile of residual stresses, as well as the fraction of retained austenite after hard turning of quenched bearing steel 100Cr6. Residual stress and retained austenite
Externí odkaz:
https://doaj.org/article/19921249efea46fba9c138afccadd09c
Autor:
Jiří Čapek, Jan Kec, Karel Trojan, Ivo Černý, Nikolaj Ganev, Kamil Kolařík, Stanislav Němeček
Publikováno v:
Metals, Vol 12, Iss 9, p 1517 (2022)
Most power plants use the Rankine cycle, where the heat supplied to water and steam is converted into mechanical work; therefore, most components have to be made of heat-resistant steel. Sufficient mechanical properties must be ensured for welded pip
Externí odkaz:
https://doaj.org/article/b8387e0abba14b86a91a98e8baec1d1f
Autor:
Karel Trojan, Václav Ocelík, Jiří Čapek, Jaroslav Čech, David Canelo-Yubero, Nikolaj Ganev, Kamil Kolařík, Jeff T. M. De Hosson
Publikováno v:
Metals, Vol 12, Iss 2, p 243 (2022)
Hot working tool steel (AISI H13) is one of the most common die materials used in casting industries. A die suffers from damage due to friction and wear during its lifetime. Therefore, various methods have been developed for its repair to save costs
Externí odkaz:
https://doaj.org/article/f4fec5a8266e4afa82acfa58fded8102
Autor:
Karel Trojan, Václav Ocelík, Nikolaj Ganev, Stanislav Němeček, Jaroslav Čech, Jiří Čapek, Jakub Němeček
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 17, Iss 0, Pp 15-19 (2018)
The aim of this paper is to describe the effects of annealing on the microstructure of laser cladded AISI H13 tool steel using various methods. Advanced laser technology has the potential to replace conventional methods to make and repair dies. Howev
Externí odkaz:
https://doaj.org/article/e4a2480de2704273a5e577e12abaff77
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 17, Iss 0, Pp 6-9 (2018)
Currently, the extensive research in the field of cutting ceramics is conducted and there are efforts to replace cemented carbides by these materials. However, the problem is to improve the production of ideal compact samples. Therefore, the influenc
Externí odkaz:
https://doaj.org/article/965e1eff21314d67ab9fe5f5b0578274
Publikováno v:
Materials, Vol 14, Iss 16, p 4598 (2021)
The authors would like to correct the sentence in the “Materials and Methods” section of their article [...]
Externí odkaz:
https://doaj.org/article/75ddebb037c34d66b8111281573355fa
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 9, Iss 0, Pp 32-38 (2017)
The paper outlines the capability of X-ray diffraction (XRD) for evaluation of real structure changes and residual stresses (RS) on cross-section of advanced thick welds due to the welding of ferromagnetic plates. The results of neutron diffraction d
Externí odkaz:
https://doaj.org/article/b7ad3c4c7ff14b789a63af643b7cc2e5
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 9, Iss 0, Pp 13-18 (2017)
Currently, the intensive development of engineering ceramic and effort to replace sintered carbides as cutting materials are in progress. With the development of the sintering technology it is now possible to produce compact ceramic cutting samples w
Externí odkaz:
https://doaj.org/article/a75bde6c30014f4c913b9d68a6609175