This paper begins by describing the thermal inputs to the cut zone when cutting mild steel with oxygen as the assist gas. The investigation concentrates on the chemical thermo-dynamics in the cut zone and pays particular attention to the influence of oxygen dilution. A detailed experimental program has allowed the authors to theoretically clarify why the process is highly sensitive to small levels of contamination of the oxygen jet.

1
Ivarson
,
A.
,
Powell
,
J.
,
Kamalu
,
J.
,
Magnusson
,
C.
 “
The Oxidation Dynamics of Laser Cutting of Mild Steel and the Generation of Striations on the Cut Edge
”,
Submitted for publication; J. of Materials Processing Technology
.
2
Ivarson
,
A.
,
Powell
,
J.
,
Magnusson
,
C.
 “
The Role of Oxidation in Laser Cutting Stainless and Mild Steel
”,
J. of Laser Applications
, vol.
3
, No
3
,
1991
, pp.
41
–
45
.
https://doi.org/10.2351/1.4745287
Google Scholar
Crossref
Search ADS
 
3
Ivarson
,
A.
,
Powell
,
J.
,
Magnusson
,
C.
 “
Laser Cutting of Steels; Analysis of the particles ejected during cutting
”,
Welding in the World
, vol.
30
, No
5/6
,
1992
, pp.
116
–
125
.
Google Scholar
 
4
Nielsen
,
S.E.
 “
Laser Cutting with High Pressure Cutting Gases and Mixed Cutting Gases
”, Thesis for degree of Doctor of Philosophy,
Denmark University of Technology
,
1985
.
Google Scholar
 
5
Brodén
,
G.
,
Ketting
,
H-O.
 “
Einfluss der Reinheit des Schneidsauerstoffs beim Laserstrahlbrennschneiden
”,
Schweissen und Schneiden
, Vol.
48
(
1989
), Heft 8, pp
379
–
382
.
Google Scholar
 
6
Ivarson
,
A.
,
Powell
,
J.
,
Kamalu
,
J.
,
Brodén
,
G.
,
Magnusson
,
C.
 “
The Effects of Oxygen Purity in Laser Cutting; A theoretical and experimental investigation
”,
Submitted for publication; Lasers in Engineering
.
7
Powell
,
J.
,
Ivarson
,
A.
,
Ohlsson
,
L.
,
Magnusson
,
C.
 “
Conductive Losses Experienced During CO2 Laser Cutting
”,
Submitted for publication; J. of Laser Applications
.
8
Introduction to High Temperature Oxidation of Metals
,
N.
Birks
 &
G.H.
Meier
 (Ed.),
Edward Arnold Ltd.
(Publ.),
1983
, ISBN 0-7131-3464-X.
This content is only available via PDF.
© 1993 Laser Institute of America.
1993
Laser Institute of America
You do not currently have access to this content.