Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Aleksandr L. Valko"'
Publikováno v:
Механика машин, механизмов и материалов, Iss 1(62), Pp 5-10 (2023)
The reliability and durability of gears in most cases depend on the contact endurance of the material of the parts. Analysis of the stress state of surface-hardened gears has shown that under contact loading, the source of primary damage can be locat
Externí odkaz:
https://doaj.org/article/ce576124d61848f4a3f826c4bc4d66b9
Publikováno v:
Механика машин, механизмов и материалов, Iss 3(60), Pp 61-67 (2022)
The methods are considered for determining the effective thickness of the hardened layer of metal parts listed in the standards STB 2307-2013 and STB ISO 18203-2019. The ambiguity of interpretation of the concept of effective thickness hэф of the h
Externí odkaz:
https://doaj.org/article/97320edca303449286a0ecf77034992b
Autor:
Sergei P. Rudenko, Aleksandr L. Valko
Publikováno v:
Механика машин, механизмов и материалов, Iss 2(59), Pp 47-53 (2022)
Laws of fatigue resistance changes of surface-hardened toothed gears are established. It is shown that the main criterion of serviceability of gear wheels of transmissions of power-saturated machines is deep contact pitting of active surfaces of teet
Externí odkaz:
https://doaj.org/article/591ed9b36cc74b26b0dd44b88f6f5c02
Publikováno v:
Механика машин, механизмов и материалов, Iss 4(53), Pp 52-59 (2020)
In the world practice of manufacturing gears for automotive equipment, a search is being made for new, more effective steel grades and ways to realize their advantages, achieved both during smelting and during further thermal, deformation and chemica
Externí odkaz:
https://doaj.org/article/01bfb6a338c9401eb2ab68140837cb19
Publikováno v:
Механика машин, механизмов и материалов, Iss 3(52), Pp 71-77 (2020)
Highly stressed transmission parts of energy-saturated machines are made of steels subjected to carburization and subsequent hardening. A low-carbon steel product forms a strong, high-carbon surface layer with a soft and viscous core. An important pa
Externí odkaz:
https://doaj.org/article/7ca094fa034447e6807cb795aeeedfc1
Publikováno v:
Механика машин, механизмов и материалов, Iss 4(49), Pp 61-69 (2019)
Examples of the main types of destruction of highly loaded gears in transmissions of automotive and tractor vehicles are given. Their causes are analyzed. It is established that the criterion for the performance of highly stressed gears of transmissi
Externí odkaz:
https://doaj.org/article/2371ad8363ef4b01905e8ac8576a5e2d
Publikováno v:
Механика машин, механизмов и материалов, Iss 3(48), Pp 51-57 (2019)
The possibility of using standard ASTM A 255–07 is shown to assess the hardenability of structural steels manufactured in accordance with GOST 4543–2016. Inaccuracies of the standard are identified with respect to the correctness of correlation d
Externí odkaz:
https://doaj.org/article/d3d371ccb2794b76a5671a1801c20fa4
Publikováno v:
Механика машин, механизмов и материалов, Iss 1(46), Pp 58-63 (2019)
The results of complex studies of coarse-grained gears made of carburized chromium-nickel steel 20Kh2N4A are presented. It is shown that with the stable operation of thermal equipment fitted with computer-aided systems for automatic control of the pa
Externí odkaz:
https://doaj.org/article/9cd6480e53d04860b13f62a707edf7b0
Autor:
Sergei P. Rudenko, Sergei G. Sandomirsky, Aleksandr L. Valko, Sergei A. Shyshko, Peter G. Karpovich
Publikováno v:
Механика машин, механизмов и материалов, Iss 2(43), Pp 55-61 (2018)
Results of bench tests of gearwheels from steels 18KhGN2МFB, 20KhN3МА and 20Kh2N4А are considered. The reasons of premature failure of gear wheels at the forced modes loading are established. Laws of formation of mechanical properties on thicknes
Externí odkaz:
https://doaj.org/article/e3ca064ad33b4afb9c8c1b2c88f2918e
Autor:
Sergei P. Rudenko, Aleksandr L. Valko
Publikováno v:
Механика машин, механизмов и материалов, Iss 2(39), Pp 34-38 (2017)
The new approach to development of regimes of chemical heat treatment of gear wheels from sparingly alloyed steels is offered. The unconditional advantage of sparingly alloyed steel before high-alloy chromium-nickel steel 20ХН3А, widely applied in
Externí odkaz:
https://doaj.org/article/a48219ba8c444e839b7a7d8520933028