Publication: Micro-crack analyses of chromium steel JIS-SCr 420 for helical gear transmission
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Issued Date
2018
Resource Type
File Type
application/pdf
ISSN
10139826
Other identifier(s)
2-s2.0-85054826113
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Key Engineering Materials. Vol 777 KEM, (2018), p.294-299
Suggested Citation
Boonmag V., Wisesook O., Phukaoluan A., Pluphrach G. Micro-crack analyses of chromium steel JIS-SCr 420 for helical gear transmission. Key Engineering Materials. Vol 777 KEM, (2018), p.294-299. doi:10.4028/www.scientific.net/KEM.777.294 Retrieved from: https://hdl.handle.net/20.500.14740/3812
Author(s)
Abstract
This research aims to investigate micro-crack on a failed for helical gear transmission which was to adjust the engine to increased horsepower. The helical gears made are from chromium steel JIS-SCr 420. The spectrophotometer test machine was used to detect chemical composition, Mechanical properties were evaluated by Vickers hardness and microstructural analysis with an optical microscope, which the crack of the surface layer and energy dispersive spectroscopy using a scanning electron microscope. The results showed that the fracture characteristic of the helical gear's surface was expected to beach marks and break away. It can be seen that the mixing failure area of oxide inclusion with carbide surrounding before the liquid state of material will be solidified which caused the failure cause of this helical gear. The summary analysis results can be accorded with the assumption of this research and which help prolong service life of the component. © 2018 Trans Tech Publications.
Subject(s)
Carbides
Chemical analysis
Chromium steel
Cracks
Energy dispersive spectroscopy
Gear teeth
Martensitic stainless steel
Power transmission
Scanning electron microscopy
Vickers hardness
Chemical compositions
Fatigue fracture
Fracture characteristics
Helical gear transmissions
Microstructural analysis
Oxide inclusion
Surface layers
Test machine
Helical gears
Chemical analysis
Chromium steel
Cracks
Energy dispersive spectroscopy
Gear teeth
Martensitic stainless steel
Power transmission
Scanning electron microscopy
Vickers hardness
Chemical compositions
Fatigue fracture
Fracture characteristics
Helical gear transmissions
Microstructural analysis
Oxide inclusion
Surface layers
Test machine
Helical gears