Off-Axial, Gas-Jet-Assisted, Laser Cutting of 6.35-mm Thick Stainless Steel-Reference-Cited by-同舟云学术

Off-Axial, Gas-Jet-Assisted, Laser Cutting of 6.35-mm Thick Stainless Steel

Published:1995-05-01 Issue:2 Volume:117 Page:272-276
ISSN:0022-0817
Container-title:Journal of Engineering for Industry
language:en
Short-container-title:

Author:

Hsu M. J.¹,Molian P. A.¹

Affiliation:

1. Mechanical Engineering Department, Iowa State University, Ames, IA 50011

Abstract

A dual gas-jet, laser-cutting technique involving coaxial and off-axial oxygen gas flows was developed to cut 6.35-mm thick AISI 304 stainless steel plates with a 1.2-kW CO2 gas transport laser at a cutting speed of 12.7 mm/sec (30 in./min). Under identical process conditions, the single, coaxial gas jet could not cut the stainless steel although the cutting speed was reduced to 2.11 mm/sec (5 in./min). Thresholds of off-axial nozzle diameter, gas-impinging angle, oxygen pressure, and other process parameters were determined to obtain clean-cut edge quality (average dross height 0.25 mm). Experimental data coupled with a fluid-dynamics model of gas flow were presented to show the effectiveness of the dual gas-jet, laser-cutting method in achieving the maximum machining rate without deteriorating the quality of cut.

Publisher

ASME International

Subject

General Medicine

Link

http://asmedigitalcollection.asme.org/manufacturingscience/article-pdf/117/2/272/6493956/272_1.pdf

Reference14 articles.

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2. Nielsen, S. E., 1986, “Laser Cutting with High Pressure Cutting Gases and Mixed Gases,” Proc. of 3rd Int. Conf. on Lasers in Manufacturing, June, Paris, France, pp. 25–44.

3. Fieret, J., and Ward, B. A., 1986, “Circular and Non-Circular Nozzle Exits for Supersonic Gas Jet Assist in CO2 Laser Cutting,” Proc. of 3rd Int. Conf. on Lasers in Manufacturing, June, Paris, France.

4. Fieret, J., Terry, M. J., and Ward, B. A., 1987, “Overview of Flow Dynamics in Gas-assisted Laser Cutting,” Proc. of SPIE, Vol. 801, High Power Lasers, pp. 243–250.

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