A study on the removal of paint and oxide layer on the steel surface by laser beam scanning method

2021 ◽  
pp. 2140006
Author(s):  
Ji-Eon Kim ◽  
Jong-Do Kim
Keyword(s):  
Laser Beam ◽  
Oxide Layer ◽  
Steel Surface ◽  
Surface Cleaning ◽  
Laser Cleaning ◽  
Beam Scanning ◽  
Scanning Method ◽  
Line Beam ◽  
Laser Beam Scanning ◽  
Beam Patterns

In this study, a laser cleaning method was developed in order to replace the existing manual work-based technologies. The experimental investigation analyzed the cleaning properties of the paint and the oxide layer on the steel surface according to the laser beam scanning method. Experiments showed that in the cleaning process, the line beam patterns with a moving stage showed differences in heat input depending on the area, and the square area beam patterns obtained with control of a Galvano scanner showed uniform cleaning performance. The results of this study demonstrated that through the prosed laser cleaning technique, oxide layers as well as paint on steel surfaces can be removed with excellent precision, which is expected to be useful in the development of eco-friendly surface cleaning techniques.

scholarly journals Investigation of an interlaced laser beam scanning method for ultrashort pulse laser micromachining applications

2020 ◽  
Vol 285 ◽  
pp. 116807 ◽  
Author(s):  
Krystian L. Wlodarczyk ◽  
Joerg Schille ◽  
Lucas Naumann ◽  
Amiel A. Lopes ◽  
Ioannis Bitharas ◽  
...  
Keyword(s):  
Laser Beam ◽  
Pulse Laser ◽  
Ultrashort Pulse ◽  
Laser Micromachining ◽  
Beam Scanning ◽  
Ultrashort Pulse Laser ◽  
Scanning Method ◽  
Laser Beam Scanning

Fabrication of Lens Rasters Using a Laser Beam Scanning Method

1998 ◽  
Vol 37 (Part 1, No. 10) ◽  
pp. 5604-5608
Author(s):  
Hyung-Wook Jeon ◽  
Hyuk-Soo Lee ◽  
Jung-Young Son ◽  
Vadim V. Smirnov ◽  
Yong-Jin Choi ◽  
...  
Keyword(s):  
Laser Beam ◽  
Beam Scanning ◽  
Scanning Method ◽  
Laser Beam Scanning

Analysis and Modeling of Surface Waviness Inspection with Light Reflection, Part 1: Laser Beam Scanning Method

1999 ◽  
Vol 121 (4) ◽  
pp. 778-784 ◽  
Author(s):  
Ching-Chih Lee
Keyword(s):  
Laser Beam ◽  
Specular Reflection ◽  
Analytical Relationship ◽  
Beam Scanning ◽  
Scanning Method ◽  
Molding Compound ◽  
Sheet Molding Compound ◽  
Projection Direction ◽  
Laser Beam Scanning ◽  
Special Case

The laser beam scanning method for inspecting a reflective surface has been studied with analytical derivations and numerical modeling. Specular reflection off the surface was assumed and mathematical relations consistent with analytic geometry were used to trace the laser beam and predict its screen projection. It was found that deviation of the screen projection is proportional to the surface slope along the projection direction at the reflecting point and the distance from the point to the screen. The 3-D modeling was validated with 2-D analytical relationship as a special case and was tested with a profiled SMC (sheet molding compound) panel. The screen projections of reflected laser scans off surfaces with typical features of interest are predicted and the effects of waviness orientation are investigated.

scholarly journals Interlaced Laser Beam Scanning: A Method Enabling an Increase in the Throughput of Ultrafast Laser Machining of Borosilicate Glass

2019 ◽  
Vol 3 (1) ◽  
pp. 14 ◽  
Author(s):  
Krystian Wlodarczyk ◽  
Amiel Lopes ◽  
Paul Blair ◽  
M. Mercedes Maroto-Valer ◽  
Duncan P. Hand
Keyword(s):  
Surface Roughness ◽  
Laser Beam ◽  
Material Removal ◽  
Removal Rate ◽  
Ablation Depth ◽  
Ultrafast Laser ◽  
Laser Machining ◽  
Beam Scanning ◽  
Scanning Method ◽  
Laser Beam Scanning

We provide experimental evidence that the laser beam scanning strategy has a significant influence on material removal rate in the ultrafast laser machining of glass. A comparative study of two laser beam scanning methods, (i) bidirectional sequential scanning method (SM) and (ii) bidirectional interlaced scanning method (IM), is presented for micromachining 1.1-mm-thick borosilicate glass plates (Borofloat® 33). Material removal rate and surface roughness are measured for a range of pulse energies, overlaps, and repetition frequencies. With a pulse overlap of ≤90%, IM can provide double the ablation depth and double the removal rate in comparison to SM, whilst maintaining very similar surface roughness. In both cases, the root-mean-square (RMS) surface roughness (Sq) was in the range of 1 μm to 2.5 μm. For a 95% pulse overlap, the difference was more pronounced, with IM providing up to four times the ablation depth of SM; however, this is at the cost of a significant increase in surface roughness (Sq values >5 μm). The increased ablation depths and removal rates with IM are attributed to a layer-by-layer material removal process, providing more efficient ejection of glass particles and, hence, reduced shielding of the machined area. IM also has smaller local angles of incidence of the laser beam that potentially can lead to a better coupling efficiency of the laser beam with the material.

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