Laser surface cleaning of EN1055 steel
Laser surface cleaning is a new technology that is not widely used by the industry as compared with other methods such as abrasive cleaning, chemical cleaning, and thermal cleaning. Currently, there are only limited studies done on EN1055 steel. The project aims to analyze EN1055 steel by usin...
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| 主要作者: | |
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| 格式: | Final Year Project |
| 語言: | English |
| 出版: |
Nanyang Technological University
2019
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/136516 |
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| 總結: | Laser surface cleaning is a new technology that is not widely used by the industry as
compared with other methods such as abrasive cleaning, chemical cleaning, and
thermal cleaning. Currently, there are only limited studies done on EN1055 steel. The
project aims to analyze EN1055 steel by using a different scan speed and numbers of
scan time. A Femtosecond (FS) laser will be used to clean the specimen. As the scan
speed and numbers of scan time vary, it will generate different surface profiles,
roughness, and characteristic before and after laser ablation. Both Scanning Electron
Microscope (SEM) and Talyscan 150 will be used to investigate and analyze the
collected data.
After going through the experiment, various scan speeds and numbers of scan time
will affect the surface roughness and surface characteristic. Cracks and craters can be
found on the surface due to low scanning speed. Surface roughness was observed with
an increasing trend when the scan speed reduced. In results, 10mm/s was selected to
be the ideal scan speed based on the observation and analysis done on the sample.
Other than that, crests and valleys were also founded on the surface when the scan time
increased. It will form the craters in the laser irradiation region which will lead to
surface roughness increase. In results, 1 to 5 scan time was selected to be the ideal scan
time based on the observation and analysis done on the sample. |
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