Behaviour of supersonic and subsonic gas jets inside laser cut kerfs

Hau Chung Man; J. Duan; Tai Man Yue

Behaviour of supersonic and subsonic gas jets inside laser cut kerfs

Hau Chung Man, J. Duan, Tai Man Yue

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

9 Citations (Scopus)

Abstract

A supersonic nozzle tip for high pressure gas assist laser cutting was designed based on the gas dynamic theories and the characteristics of its exit jet at free space were reported in last year's conference. More investigations have been carried out since. The effect of stand-off upon the jet momentum was studied using shadowgraphic technique. The behaviour of the gas jet inside the cut slot at different stand-off distance and inlet pressure were investigated. Cutting experiments were carried out using a 3.5 kw CO2laser.

Original language	English
Title of host publication	Laser Institute of America, Proceedings
Publisher	Laser Inst of America
Publication status	Published - 1 Dec 1997
Event	Proceedings of the 1997 Laser Materials Processing Conference, ICALEO'97. Part 1 (of 2) - San Diego, CA, United States Duration: 17 Nov 1997 → 20 Nov 1997

Conference

Conference	Proceedings of the 1997 Laser Materials Processing Conference, ICALEO'97. Part 1 (of 2)
Country	United States
City	San Diego, CA
Period	17/11/97 → 20/11/97

ASJC Scopus subject areas

Physics and Astronomy(all)

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Cite this

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title = "Behaviour of supersonic and subsonic gas jets inside laser cut kerfs",

abstract = "A supersonic nozzle tip for high pressure gas assist laser cutting was designed based on the gas dynamic theories and the characteristics of its exit jet at free space were reported in last year's conference. More investigations have been carried out since. The effect of stand-off upon the jet momentum was studied using shadowgraphic technique. The behaviour of the gas jet inside the cut slot at different stand-off distance and inlet pressure were investigated. Cutting experiments were carried out using a 3.5 kw CO2laser.",

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N2 - A supersonic nozzle tip for high pressure gas assist laser cutting was designed based on the gas dynamic theories and the characteristics of its exit jet at free space were reported in last year's conference. More investigations have been carried out since. The effect of stand-off upon the jet momentum was studied using shadowgraphic technique. The behaviour of the gas jet inside the cut slot at different stand-off distance and inlet pressure were investigated. Cutting experiments were carried out using a 3.5 kw CO2laser.

AB - A supersonic nozzle tip for high pressure gas assist laser cutting was designed based on the gas dynamic theories and the characteristics of its exit jet at free space were reported in last year's conference. More investigations have been carried out since. The effect of stand-off upon the jet momentum was studied using shadowgraphic technique. The behaviour of the gas jet inside the cut slot at different stand-off distance and inlet pressure were investigated. Cutting experiments were carried out using a 3.5 kw CO2laser.

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