A simple model of the process of cutting metal with a gas assisted laser beam has been derived with the principle objective of understanding the role of the the gas both from its kenietics and its chemistry. The model considers the cut front as a surface phenomena for reaction and absorption. The effects of oxide films, polarisation and front shape have been analysed. It is shown that very small levels of impurity in the oxygen would be expected to have a significant effect on the cutting performance. Also with inert gas there are advantages in using high pressures.
REFERENCES
1.
W.M.
Steen
and J.
Kamalu
“Laser Cutting”, Chapter Two, Laser materials processing
. (Ed) M.
Bass
, North-Holland Publishing Co.
1983
.2.
3.
F.O.
Olsen
, “Investigation in Optimising the Laser Cutting Process”, ASM Conf.on applications of Lasers in Materials Processing
, 24-26 Jan
., Los Angeles
, U.S.A.
, 1984
, pp. 64
–80
.4.
5.
6.
M.F.
Modest
and H.
Abakins
, “Evaporattive cutting of a semi-infinite body with a moving CW laser
”, ASME
, vol. 108
, 1986
, pp. 602
–607
.7.
J.T.
Luxton
, “Optics for Material Processing
”, Industrial Laser Handbook
, 1986
, pp. 38
–48
.8.
Y.
Arata
et al., “Dynamic Behavior in Laser Gas Cutting of Mild Steel
”, Trans. JWRI
, vol. 8
, No. 2
, 1979
, pp. 15
–26
.9.
A.
Matsunawa
et al, “Interation Between Supersonic Jet and Burning Iron Wall in Oxygen Gas Cutting (Part 1)
”, Trans. of JWRI
, vol. 14
, No. 1
, pp. 45
–54
.10.
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© 1992 Laser Institute of America.
1992
Laser Institute of America
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