Investigation into nitrided spur gears |
| |
Authors: | B S Yilbas A Coban J Nickel M Sunar M Sami B J Abdul Aleem |
| |
Affiliation: | (1) Mechanical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia;(2) Energy Research Laboratory of the Research Institute, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia |
| |
Abstract: | The cold forging method has been widely used in industry to produce machine parts. In general, gears are produced by shaping
or hobbing. One of the shaping techniques is precision forging, which has several advantages over hobbing. In the present
study, cold forging of spur gears from Ti-6A1-4V material is introduced. To improve the surface properties of the resulting
gears, plasma nitriding was carried out. Nuclear reaction analysis was carried out to obtain the nitrogen concentration, while
the micro-PIXE technique was used to determine the elemental distribution in the matrix after forging and nitriding processes.
Scanning electron microscopy and x-ray powder diffraction were used to investigate the metallurgical changes and formation
of nitride components in the surface region. Microhardness and friction tests were carried out to measure the hardness depth
profile and friction coefficient at the surface. Finally, scoring failure tests were conducted to determine the rotational
speed at which the gears failed. Three distinct regions were obtained in the nitride region, and at the initial stages of
the scoring tests, failure in surface roughness was observed in the vicinity of the tip of the gear tooth. This occurred at
a particular rotational speed and work input. |
| |
Keywords: | plasma nitriding spur gear |
本文献已被 SpringerLink 等数据库收录! |
|