STUDY ON PERFORMANCE OF CO2 LASER IN PAINT REMOVAL OVER SELECTED NATIONAL CAR MODEL

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Mohammad Khairul Azhar Abdul Razab ◽  
Mohamad Suhaimi Jaafar ◽  
Fatanah Mohamad Suhaimi ◽  
Mohamad Najmi Masri ◽  
Nor Hakimin Abdullah ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Continuous Wave ◽  
Beam Power ◽  
Co2 Lasers ◽  
Coated Substrate ◽  
Car Model ◽  
Optimum Parameters ◽  
Paint Stripping ◽  
Cw Co2 Laser ◽  
Paint Removal

A technique to determine the optimum parameters of 30 Watt Continuous Wave (CW) CO2 laser paint removal has been developed on national car coated substrate. This paper reports on the results of studies carried out on two different coating thicknesses; 196 µm and 201 µm using CW CO2 lasers operating at 10, 600 nm wavelength and relatively high beam power from 40%, 50%, 60%, 70%, 80% and 90% out of 30 Watt. Empirical data were presented to demonstrate the optimum power required for paint stripping process. Macro analysis was done to prove the stripping process was in line with the increase of power percentage applied, whereas microanalysis using EDX and SEM revealed the atomic composition and surface roughness of the crater.

A Simple Power Meter for Measuring Outputs from a High Power Continuous Wave (CW) CO2 Laser

1979 ◽  
Vol 18 (2) ◽  
Author(s):  
Sadao Nakajima ◽  
Yoshio Maruyama ◽  
Kyoko Kosasa
Keyword(s):  
Co2 Laser ◽  
High Power ◽  
Continuous Wave ◽  
Power Meter ◽  
Simple Power ◽  
Cw Co2 Laser

cw CO2 laser-induced halogen exchange reaction between hexafluorobenzene and boron trichloride

1983 ◽  
Vol 48 (5) ◽  
pp. 1314-1322 ◽  
Author(s):  
Pavel Engst ◽  
Milan Horák ◽  
Josef Pola
Keyword(s):  
Energy Transfer ◽  
Laser Radiation ◽  
Exchange Reaction ◽  
Co2 Laser ◽  
Continuous Wave ◽  
Boron Trichloride ◽  
Halogen Exchange ◽  
Order Of Magnitude ◽  
Cw Co2 Laser ◽  
Reaction Initiation

The halogen exchange reaction between hexafluorobenzene (HFB) and boron trichloride, BCl3 initiated by a continuous-wave CO2 laser primarily affords chloropentafluorobenzene, C6F5Cl and dichlorofluoroborane, BCl2F. For the reaction initiation a number of rotational-vibrational lines of the vibrational 00°1→10°0 transition was used. With wavenumber radiation 977.21 cm-1 a faster V-V energy transfer between HFB and BCl3 molecules may occur. For this case the rate of the exchange reaction was observed to be by an order of magnitude higher compared to the reaction initiated by the laser radiation at 949.48 cm-1 and carried out under the identical absorption conditions.

Investigations on cw CO2-laser induced welding plasmas using differential interferometry

1999 ◽  
Author(s):  
Henrik Schittenhelm ◽  
Jürgen Müller ◽  
Peter Berger ◽  
Helmut Hügel
Keyword(s):  
Co2 Laser ◽  
Differential Interferometry ◽  
Cw Co2 Laser

Spatial temperature distribution in CW CO2 laser photosensitized reactions

1984 ◽  
Vol 49 (6) ◽  
pp. 1354-1359 ◽  
Author(s):  
Pavel Kubát ◽  
Josef Pola
Keyword(s):  
Temperature Distribution ◽  
Chemical Reactions ◽  
Co2 Laser ◽  
Computational Procedure ◽  
Heat Convection ◽  
Inert Gas ◽  
Spatial Temperature Distribution ◽  
Cw Co2 Laser ◽  
Spatial Temperature

The temperature distribution in gaseous SF6 and SF6-inert gas samples under irradiation with cw CO2 laser measured by a thermocouple technique is confronted with the results of a computational procedure neglecting heat convection. The results are helpful in understanding the effect of the inert gas on the distribution of temperature and the size of the reacting hot volume in the cw laser-photosensitized chemical reactions.

Cw CO2 laser driven oxidation of some perhalogenocycloalkenes

1991 ◽  
Vol 56 (2) ◽  
pp. 398-405 ◽  
Author(s):  
Josef Pola ◽  
Jaroslav Včelák ◽  
Zdeněk Chvátal
Keyword(s):  
Co2 Laser ◽  
Total Pressure ◽  
Diels Alder ◽  
Title Reaction ◽  
Consecutive Reactions ◽  
Cw Co2 Laser

The title reaction of hexafluorocyclobutene, 1,2-dichloro-3,3,4,4-tetrafluorocyclobutene and decafluorocyclohexene studied at total pressure 13.3 and 16 kPa yield oxalyl halides COX.COX (X = F, Cl) and C2F4 that undergo consecutive reactions to COF2, CO and X2. The oxidation of decafluorocyclohexene is preceded by retro-Diels-Alder decomposition affording hexafluorocyclobutene and C2F4. Two alternative mechanisms for the oxidation of the cyclobutenes are presented, one involving a novel cleavage of intermediary bicyclic dioxetanes. The decomposition of oxalyl fluoride into COF2 and CO is favored over its oxidation.

Influence of a radial inhomogeneity of the active medium on the output radiation power from a cw CO2 laser with fast axial flow

1996 ◽  
Author(s):  
Michail G. Galushkin ◽  
Vladimir S. Golubev ◽  
V. V. Dembovetsky ◽  
Yuri N. Zavalov ◽  
Valentina Y. Zavalova
Keyword(s):  
Active Medium ◽  
Co2 Laser ◽  
Radiation Power ◽  
Axial Flow ◽  
Output Radiation ◽  
Radial Inhomogeneity ◽  
Cw Co2 Laser ◽  
Output Radiation Power

scholarly journals Thin-Film Processing of Polypropylene and Polystyrene Sheets by a Continuous Wave CO2 Laser with the Cu Cooling Base

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1448
Author(s):  
Nobukazu Kameyama ◽  
Hiroki Yoshida ◽  
Hitoshi Fukagawa ◽  
Kotaro Yamada ◽  
Mitsutaka Fukuda
Keyword(s):  
Thin Film ◽  
Co2 Laser ◽  
Continuous Wave ◽  
Cw Laser ◽  
Heat Effects ◽  
Film Processing ◽  
Carbon Dioxide Co2 ◽  
A Minor ◽  
Residual Heat ◽  
Thin Film Processing

Carbon dioxide (CO2) laser is widely used in commercial and industrial fields to process various materials including polymers, most of which have high absorptivity in infrared spectrum. Thin-film processing by the continuous wave (CW) laser is difficult since polymers are deformed and damaged by the residual heat. We developed the new method to make polypropylene (PP) and polystyrene (PS) sheets thin. The sheets are pressed to a Cu base by extracting air between the sheets and the base during laser processing. It realizes to cut the sheets to around 50 µm thick with less heat effects on the backside which are inevitable for thermal processing using the CW laser. It is considered that the boundary between the sheets and the base is in thermal equilibrium and the base prevents the sheets from deforming to support the backside. The method is applicable to practical use since it does not need any complex controls and is easy to install to an existing equipment with a minor change of the stage.

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