Surface capacity of gears of circular-arc tooth-profile

El-Bahloul, Ahmed M.M.

doi:10.1016/0043-1648(95)06622-5

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…The SEM images of the wear marks on the ball on disk system, against WC-Co balls, at 5 N load, 0.3m / s wear rate and 500 m distance are given in figure 6. Wear traces vary according to boride layer thickness [33,51,52]. When the surface morphology of the wear marks is examined, adhesive wear is seen in the non-boronized sample, while abrasive wear is seen in both the adhesive and abrasive wear by boring samples repeatedly cutting the coating surface by friction pairs.…”

Section: Wear Propertiesmentioning

confidence: 99%

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Mertgenç

2020

Sakarya University Journal of Science

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The Nitronic 50 steel is a nitrogen containing stainless steel, which has a high corrosion resistance, and high strength but its surface resistance against wear is low, making it extremely limited to use in areas subject to wear. In this study, in order to improve the material surface and to investigate its effect on tribological properties, boronizing process was carried out by used pack boriding method at 850 ° C, 900 ° C and 950 ° C for 4 hours. As a result of coating process, the boride layer has a smooth and flat structure in SEM investigations, the coating thickness varies between 9 µm and 36 µm and the boride layer thickness increases with increasing temperature. While the hardness of the uncoated material was around 250 HV0.05, the surface hardness of the material reached up to 1.712 HV0.05 with the coating process and increased about 7 times. According to XRD analysis, the surface of the coating layer consisted of phases FeB, CrB, Ni3B, Fe2B, Cr2B and MnB. Wear behavior was performed by ball-on-disk wear test in dry environment. The friction coefficient and wear rate decreases with increasing temperature, while the wear resistance is increased by 20 times compared to unboronized sample. When the wear tracks were examined, the uncoated Nitronic 50 had an adhesive wear mechanism, on the other hand the boronized samples had an adhesive and abrasive wear mechanism together. The Rockwell-C adhesion test was carried out under a load of 1.471 N and the resulting surface damages were evaluated according to the quality map. Boronized steel at 850 °C is defined as HF3 type, at 900 °C and 950 °C at boronized steel it is defined as HF4 type and adhesion is acceptable.

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Section: Wear Propertiesmentioning

confidence: 99%

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Mertgenç

2020

Sakarya University Journal of Science

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“…3. Frequency curve at 2989r/min condition Hypoid gears are mostly used in automobile main reducer, and gear meshing impact of the main reducer has become the main source of vibration and noise [5][6]. So the abnormal vibration and noise at certain speed is caused by resonance resulted by the well matching of the gear meshing impact frequency and the natural frequency of the rear axle.…”

Section: Fig 2 Vibration Curve In Uniform Accelerationmentioning

confidence: 99%

Investigation of Vibration for Vehicle Rear Axle Based on Modal Analysis

Shi

Guo

Liu

et al. 2012

AMR

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Abnormal vibration of a vehicle rear axle was detected during bench test. 3D model and finite element model of the rear axle were built and the vibration modes were computed. It was found that the frequency of abnormal vibration in the bench test just matched the frequency of the first bending mode of the rear axle assembly. Therefore it can be concluded that the resonance of rear axle assembly result in the abnormal vibration and some measures are necessary, such as strengthening the half-axle sleeve or installing vibration absorber

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“…With the same material and machining accuracy, gear noise and vibration of hard surface is stronger than that of soft surface [4]. However, the surface hardness has a great effect on the service life of gear [5], so the surface hardness couldn't be too low. Driven gear has more teeth and would get lower wear compares with drive gear, so the surface of driven gear should be designed and manufactured appropriately lower than that of drive gear to reduce noise and vibration, which could promise the wear degree of drive gear and driven gear accordance and no influence on service life.…”

Section: Fig3 Order Track Analysis Of Acceleration Instrumentmentioning

confidence: 99%

Analysis and Improvement of Vibration and Noise for Driving Axle

Shi

Guo

Yang

et al. 2012

AMR

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Driving axle of a light bus was tested on the bench of transmission system, and the cause of abnormal vibration and noise was analyzed. Some defects were found from the test, such as oversized impact of hyperboloidal gear pair, eccentricity of drive gear shaft, and poor roughness of tooth face. Several improvement measures were put forward and confirmed by bench test. The results indicate that noise reduced greatly, thus the improvement measures are effective and positive

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Surface capacity of gears of circular-arc tooth-profile

Cited by 8 publications

References 7 publications

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Investigation of Vibration for Vehicle Rear Axle Based on Modal Analysis

Analysis and Improvement of Vibration and Noise for Driving Axle

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