Thermal investigation of interaction between high-power CW-laser radiation and a water-jet

被引：15

作者：

Brecher, Christian ^{[1
,2
]}

Janssen, Henning ^{[1
]}

Eckert, Markus ^{[1
]}

Schmidt, Florian ^{[1
]}

机构：

[1] Fraunhofer Inst Prod Technol IPT, Steinbachstr 17, D-52074 Aachen, Germany

[2] Rhein Westfal TH Aachen, Lab Machine Tools & Prod Engn WZL, Steinbachstr 19, D-52074 Aachen, Germany

来源：

LASER ASSISTED NET SHAPE ENGINEERING 9 INTERNATIONAL CONFERENCE ON PHOTONIC TECHNOLOGIES PROCEEDINGS OF THE LANE 2016 | 2016年 / 83卷

关键词：

Laser-Water-Jet; High-Power; High DOF; Beam Guiding;

D O I：

10.1016/j.phpro.2016.08.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The technology of a water guided laser beam has been industrially established for micro machining. Pulsed laser radiation is guided via a water jet (diameter: 25-250 mu m) using total internal reflection. Due to the cylindrical jet shape the depth of field increases to above 50 mm, enabling parallel kerfs compared to conventional laser systems. However higher material thicknesses and macro geometries cannot be machined economically viable due to low average laser powers. Fraunhofer IPT has successfully combined a high-power continuous-wave (CW) fiber laser (6 kW) and water jet technology. The main challenge of guiding high power laser radiation in water is the energy transferred to the jet by absorption, decreasing its stability. A model of laser water interaction in the water jet has been developed and validated experimentally. Based on the results an upscaling of system technology to 30 kW is discussed, enabling a high potential in cutting challenging materials at high qualities and high speeds. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：317 / 327

页数：11

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