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Strengthening Improvement on Gear Steels
steel research international, 201518CrNiMo7‐6 carburizing steel grade is commonly used to produce high‐performance gear components, e.g., for wind energy converters. Component failure is often related to cracks taking origin in correspondence of non‐metallic inclusions. In order to increase the component's service life, a high degree of steel cleanliness has been pursued so far ...
CIANETTI, Filippo +4 more
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GEAR-STEELS AND THE PRODUCTION OF AUTOMOBILE GEARS
SAE Technical Paper Series, 1926<div class="htmlview paragraph">Stating that the production of satisfactory gears is one of the most serious problems confronting the automobile builder, the authors give an outline of the practice of producing gears that is used by the company they represent and describe a new method for cutting the rear-axle drive-pinion by using two machines ...
JOHN BETHUNE, W. G. HILDORF
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Nanoindentation testing of gear steels
Zeitschrift für Metallkunde, 2003Abstract A combination of nanoindentation testing and atomic force microscopy (AFM) has been used to accurately determine the hardness and elastic modulus of gear steels. The results confirmed that the conventional analysis method due to Oliver and Pharr tends to greatly overestimate the hardness and elastic modulus due to the effect of pile-up by ...
Oila A, Bull SJ
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Characterization of the microstructure and hardness of case-carburized gear steel
Micron, 2021The microstructure and hardness of case-hardened steel were investigated after carburizing and austenitizing at 820-900 °C, and oil quenching and tempering at 180 °C. The carburized case had a multiphase microstructure consisting of martensite, carbides, and retained austenite, and the maximum content of the retained austenite was 30%; the particle ...
Wu, Chen +5 more
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Development of Pitting Resistant Steel for Gears
SAE Technical Paper Series, 2006<div class="htmlview paragraph">Newly designed gears are subject to higher loads that demand a steel that is capable of greater pitting resistance. The application of shot peening to gears has been increasing to improve tooth root strength, but pitting resistance had not been necessarily high.
Yuji Adachi +3 more
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Worm-Type Gear with Steel Gearwheel
2021The manuscript presents a study of a variety of a worm gear having a truncated gear rim as compared to the common worm gear. This gear has been originally invented by Egorov and Iofik and, as shown here, it has a number of favorable geometrical and kinematic, power, strength, layout, and manufacturing properties.
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Gear Steels for Future Helicopter Transmissions
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 1989In order to reduce weight, improve reliability and increase safety, significant changes in the design of future helicopter transmissions are envisaged. Such designs are likely to place new demands on conventional steels which will eventually result in the capability of the gear steels themselves to become the limiting factor, restricting any further ...
D P Davies, B C Gittos
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Integral Preoxidation of Aerospace Gear Steel
Heat Treating Conference, 2011Abstract A study of the use of integral preoxidation was conducted on aerospace gear steels. Some aerospace gear manufacturers make use of a preoxidation process that is separate from carburizing to produce parts with uniform case depths and surface hardness.
Timothy De Hennis +2 more
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The Future of Landing Gear Steels
Aircraft Engineering and Aerospace Technology, 1991STOCKSBRIDGE Engineering Steels (SES) is a manufacturer of specialised steels for the aerospace industry, supplying major airframe, engine and aerospace equipment companies including Airbus Industrie, Boeing, Dowty, Rolls‐Royce, Messier‐Bugatti and Westland Helicopters.
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Corrosion of Aircraft Landing Gear Steels
Naval Engineers Journal, 1994ABSTRACT Carrier‐based aircraft landing gear demands a tough, corrosion‐resistant material. Because of its high tensile strength, 300M steel was accepted as the standard material for aircraft landing gear. However, its corrosion resistance and fracture toughness are low, and is ill‐suited for advanced aircraft landing gear.A newly developed nickel ...
Eun U. Lee, Jeffrey Waldman
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