Cutting thin sheet metal with a water jet guided laser using various cutting distances, feed speeds and angles of incidence

Porter, J.; Louhisalmi, Y.; Karjalainen, Jussi A.; Füger, Sascha

doi:10.1007/s00170-006-0521-7

Cited by 60 publications

(18 citation statements)

References 3 publications

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“…The second group includes configurations where the sample is immersed in a gaseous atmosphere with a laser hitting the material surface while a jet of water or steam is sent near to the area to cool it down or to interact chemically (Geiger et al [4]). The last group is formed by exotic interactions such as fluidic optical fiber on copper (Porter et al [5]) or silicon (Kraya et al [6]), waterfall on the material surface (Dupont et al [7]), fluid/air mix (Matsumoto et al [8]). All these experiments were reported by Kruusing [9][10].…”

Section: Introductionmentioning

confidence: 99%

Surface oxidation and phase transformation of the stainless steel by hybrid laser-waterjet impact

Weiss¹,

Aillerie²,

Tazibt³

et al. 2014

Mater. Res. Express

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Hybrid jets (laser guided by water jet) are commonly used in the area of microelectronics for cutting thin wafer plates and for the design of special pieces. In this context, the hybrid jet works with a low power and low pressure. Efforts are made to apply and to improve this hybrid technology for cutting thicker metallic materials. In order to facilitate this development, we have studied the effects induced by a water jet-laser system coupled to the same point on a metallic material. The pressure of the water jet is about 1 MPa and the power of the laser source is about 400 W, which is much higher than the actual hybrid jet power. As a result, in the case of 301 L steel plates, we have noticed the formation of a magnetite layer around the cut in accordance with the high temperature reactions between water and iron, but, surprisingly, in this case, the reaction is practically instantaneous. A small percentage of hematite also appears, from a secondary reaction of reduction of magnetite. By using different techniques (Raman spectroscopy, optical microscopy, SEM, XRD…) we have observed, firstly, that the width of the oxidized zone is proportional to the cutting speed and on the other hand, that there exists a phase transformation in a small heat-affected zone, consistent with the hybrid jets literature.

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Section: Introductionmentioning

confidence: 99%

Surface oxidation and phase transformation of the stainless steel by hybrid laser-waterjet impact

Weiss¹,

Aillerie²,

Tazibt³

et al. 2014

Mater. Res. Express

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“…The main disadvantage of this technology is the low resolution which is limited by the water jet diameter, typically, between 50 and 200 μm 173 . The main applications of the technique focus on cutting, drilling, and ablation of metals and semiconductor wafers [175][176][177] . The technique can also be used for cutting of transparent hard materials, such as sapphire, SiC, and GaN [178][179][180] .…”

Section: Hybrid Laser Processing By Two Lasersmentioning

confidence: 99%

Hybrid laser precision engineering of transparent hard materials: challenges, solutions and applications

2021

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Laser has been demonstrated to be a mature and versatile tool that presents great flexibility and applicability for the precision engineering of a wide range of materials over other established micromachining techniques. Past decades have witnessed its rapid development and extensive applications ranging from scientific researches to industrial manufacturing. Transparent hard materials remain several major technical challenges for conventional laser processing techniques due to their high hardness, great brittleness, and low optical absorption. A variety of hybrid laser processing technologies, such as laser-induced plasma-assisted ablation, laser-induced backside wet etching, and etching assisted laser micromachining, have been developed to overcome these barriers by introducing additional medium assistance or combining different process steps. This article reviews the basic principles and characteristics of these hybrid technologies. How these technologies are used to precisely process transparent hard materials and their recent advancements are introduced. These hybrid technologies show remarkable benefits in terms of efficiency, accuracy, and quality for the fabrication of microstructures and functional devices on the surface of or inside the transparent hard substrates, thus enabling widespread applications in the fields of microelectronics, bio-medicine, photonics, and microfluidics. A summary and outlook of the hybrid laser technologies are also highlighted.

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“…So, the absorptivity of molten steel is the largest in this study. According the theoretical aspects of fibre laser cutting [18][19][20], the variation of absorptivity with different angle of incidence (φ In ) is shown in Fig. 5.…”

Section: Absorptivity Of Molten Steelmentioning

confidence: 99%

A new thin sheet heat source model for active gas melt laser cutting

Liu

Zhang

2014

Int J Adv Manuf Technol

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Because of tiny focal spot and the complex physical and chemical processes of active gas melt laser cutting, the actual efficiency of the laser beam, kerf width, periodic striation and the temperature field could not be simulated through previous heat source models. In this paper, a new thin sheet heat source model is presented to study the laser cutting process by finite element analysis. A series of experiments were also carried out to verify the predictions. Our results were obtained for thin (1.5 mm) type phase-hardened parts. A good correlation was found between simulation and experimental results. This new model can provide a theoretical basis for studying the active gas melt laser cutting of thin sheets.

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Cutting thin sheet metal with a water jet guided laser using various cutting distances, feed speeds and angles of incidence

Cited by 60 publications

References 3 publications

Surface oxidation and phase transformation of the stainless steel by hybrid laser-waterjet impact

Surface oxidation and phase transformation of the stainless steel by hybrid laser-waterjet impact

Hybrid laser precision engineering of transparent hard materials: challenges, solutions and applications

A new thin sheet heat source model for active gas melt laser cutting

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