Gas hydrodynamics of CW laser cutting of metals in inert gas

N. K. Makashev; E. S. Asmolov; V. V. Blinkov; A. Yu. Boris; A. V. Burmistrov; O. G. Buzykin; V. A. Makarov

doi:10.1117/12.171629

1 April 1994 Gas hydrodynamics of CW laser cutting of metals in inert gas

N. K. Makashev, E. S. Asmolov, V. V. Blinkov, A. Yu. Boris, A. V. Burmistrov, O. G. Buzykin, V. A. Makarov

Proceedings Volume 2257, Russia National Conference: Industrial Lasers and Laser Material Processing; (1994) https://doi.org/10.1117/12.171629
Event: Industrial Lasers and Laser Material Processing: Russian National Conference, 1993, Shatura, Moscow Region, Russian Federation

Abstract

The quantitative model for the continuous-wave laser cutting of metals without chemical reactions is presented. The cutting gas flow is investigated experimentally using a geometrically similar model. Gas pressure and velocity distribution over the cutting front have been measured. Simplified mathematical algorithms for the heat problem have been developed and the maximum depth and cutting speed have been calculated depending on the laser beam parameters. The possible nonstationarities in motion of the melt and the cutting front have been considered. A thermal mechanism for regular cut ripple formation is suggested. The mechanism involves a balance of the capillary forces and those caused by the gas flow and acting on the melt near the upper edge of a cutting front. The simple formulae have been obtained for the magnitude and period of the ripples.

Citation Download Citation

N. K. Makashev, E. S. Asmolov, V. V. Blinkov, A. Yu. Boris, A. V. Burmistrov, O. G. Buzykin, and V. A. Makarov "Gas hydrodynamics of CW laser cutting of metals in inert gas", Proc. SPIE 2257, Russia National Conference: Industrial Lasers and Laser Material Processing, (1 April 1994); https://doi.org/10.1117/12.171629

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available