Results 11 to 20 of about 485 (190)
Deterministic Analytical Model of Resistance to Deep Contact Fatigue of a Stressed Material
Механика машин, механизмов и материалов, 2021 The stress state of the surface layer in the contact zone of the mating teeth of cylindrical gears is considered. It is shown that under contact loading, the stress state of the surface layer is inhomogeneous and changes with the distance from the ...
Sergei P. Rudenko, Sergei G. Sandomirski
doaj +1 more source
Grinding the side surfaces of the spiroid cylindrical gear worm turns with a tapered wheel [PDF]
E3S Web of Conferences, 2023 Information about the worms’ production technology of spiroid cylindrical gears is given. A method of the profile analytical calculation of a disk abrasive tool is proposed, providing the possibility to profile grinding wheels for various types of ruled ...
Tkachuk Alexander, Ignatyugin Valery
doaj +1 more source
Influence of Shot Peening on Surface Durability of Case-Hardened Steel Gears
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2007 In order to investigate the influence of shot peening on the surface durability of case-hardened steel gears, the case-hardened steel gears shot-peened with different shot velocities and shot diameters were fatigue-tested using a power circulating type ...
Masanori SEKI +5 more
doaj +1 more source
EFFECTS OF CARBURIZING AND NITRIDING PROCESSES ON THE COST AND QUALITY OF GEARS PRODUCED WITH AISI 4140 AND 8620 STEELS [PDF]
Tecnologia em Metalurgia, Materiais e Mineração, 2012 This study compares the effects of nitriding and carburizing processes applied to gears subjected to contact stresses below 1300 MPa. The manufacturing cost, as well the depth of hardened layer and the distortion produced by two processes are analyzed.
Claudio José Leitão +2 more
doaj +1 more source
Extended Wear Lifetime Calculation for Grease Lubricated Gears in Consideration of Surface Hardness and Roughness [PDF]
MATEC Web of Conferences, 2022 Greases have a variety of advantages when special operating conditions apply for gear lubrication, e. g. improved properties against continuous (or slow speed) wear.
Siewerin Benedikt J. +2 more
doaj +1 more source
Tribological evaluation of sulfurnitrided gears without liquid lubricant
Nihon Kikai Gakkai ronbunshu, 2021 Sulfurnitriding, one of various surface treatments for mechanical components made of steels realizes solid lubrication for decreasing friction force of each contact point and keeping lubricating condition on the surface.
Kazuya HORIE +2 more
doaj +1 more source
MODERN METHODS OF GEAR MILLING OF HARDENED LARGE-MODULE GEARS
Scientific Journal of Polonia University, 2021 The latest developments of modern methods of high-speed gear milling of large-module cylindrical gears, both for preliminary grinding of teeth and for final blade processing of gears, are considered. For high-speed blade gear processing, promising designs of worm carbide cutters have been developed, manufactured and implemented.
Kateryna Kamchatna-Stepanova +1 more
openaire +2 more sources
Influence of Hardenability on Gear Distortions Caused by Hardening
Bulletin of JSME, 1983 The kinds of materials have different effects on gear distortions caused by hardening, even if heat-treatments of the raw material and gear are the same. In this experiment, the test gears which were made of steel materials containing different amounts of some chemical compositions in two kinds of steel were case-hardened.
FUJIO, Hiroshige, OKADA, Muneki
openaire +3 more sources
Designs, 2023 The gear manufacturing method is an important determinant of their performance and service life. Surface hardness and dimensional accuracy play a significant influence in determining wear and contact fatigue in gears. This study’s goal was to measure the
Natalino Fonseca Da Silva Guterres +2 more
doaj +1 more source
Effects of Gear-Side Case-Hardening on Residual Stress of Case-Hardened Gears.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2001 This paper presents a study on effects of gear-side case-hardening on residual stresses of case-hardened gears. The carbon content of each element of the FEM models due to carburizing was computed on the basis of the relation between carburizing condition and carbon content distribution. A heat conduction analysis and an elastic-plastic stress analysis
MIYACHIKA, Kouitsu +5 more
openaire +2 more sources