An experimental investigation of underwater pulsed laser forming

Shen, Hong; Ran, Maoli; Hu, Jun; Yao, Zhenqiang

doi:10.1016/j.optlaseng.2014.04.011

Cited by 25 publications

(6 citation statements)

References 19 publications

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“…In fact, cooling can be the longest part of a laser forming process [52,59,86,107]. To reduce the processing time, researchers have proposed multiple methods for forced cooling such as forced convection with compressed gas streams aimed at either side (Figure 7b) [92,108], passive water cooling with the bottom of the workpiece being placed in a water bath (Figure 7c) [109][110][111], and forced liquid cooling, such as a circulated cooling fluid placed in contact with the bottom of the substrate (Figure 7d) [112][113][114][115]. All these methods showed a pronounced reduction in the total processing time, as the workpieces cooled to room temperature in a matter of seconds, with active water cooling showing the largest reduction in processing time.…”

Section: Cooling Effects In Laser Formingmentioning

confidence: 99%

Making Light Work of Metal Bending: Laser Forming in Rapid Prototyping

Bachmann

Dickey

Lazarus

2020

QuBS

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Lasers can be used to bend 2D metal sheets into complex 3D objects in a process called ‘laser forming.’ Laser forming bends metal sheets by locally heating the sheets to generate plastic strains and is an established metal bending technology in the shipbuilding industry. Recent studies have investigated the laser forming of thin metal parts as a complementary rapid prototyping technology to metal 3D printing. This review discusses the laser forming process, beginning with the mechanisms before covering various design considerations. Laser forming for the rapid manufacturing of metal parts is then reviewed, including the recent advances in process planning, before highlighting promising future research directions.

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Section: Cooling Effects In Laser Formingmentioning

confidence: 99%

Making Light Work of Metal Bending: Laser Forming in Rapid Prototyping

Bachmann

Dickey

Lazarus

2020

QuBS

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“…They derived the following condition for onset of buckling. Shen et al [10] has shown that in pulsed laser forming highest bending angle can be achieved with TGM when the top surface of the work-piece is in air and the bottom surface is in water. Shi et al [11] proposed a mechanism of laser forming named coupling mechanism (CM) which is the combination of TGM and UM, and hence can cause both bending and shrinkage.…”

Section: Introductionmentioning

confidence: 99%

Investigation on laser forming of stainless steel sheets under coupling mechanism

Chakraborty

Maji

Racherla

et al. 2015

Optics & Laser Technology

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“…As the hardened depth depends on the thermal conductivity of the material, the surface temperature and the penetration depth may be varied by underwater laser processing [12,13].…”

Section: Introductionmentioning

confidence: 99%

Feasibility Studies on Underwater Laser Surface Hardening Process

Biao

Hwang

et al. 2015

Advances in Materials Science and Engineering

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Laser surface hardening process is a very promising hardening method for ferrous and nonferrous alloys where transformations occur during cooling after laser melting in the solid state. This study experimentally characterizes laser surface hardening of tool steel in both water and air. For the underwater operation, laser surface scanning is performed over the tool steel surface which is immersed in water. The laser surface hardening tests are performed with a maximum 200 W fiber laser with a Gaussian distribution of energy in the beam. For the surface hardening, single-track melting experiment which sequentially scans elongated path of single line has been performed. As the hardened depth depends on the thermal conductivity of the material, the surface temperature and the penetration depth may be varied by underwater laser processing. The feasibility of underwater laser surface hardening process is discussed on the basis of average hardness level and hardened bead shape.

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An experimental investigation of underwater pulsed laser forming

Cited by 25 publications

References 19 publications

Making Light Work of Metal Bending: Laser Forming in Rapid Prototyping

Making Light Work of Metal Bending: Laser Forming in Rapid Prototyping

Investigation on laser forming of stainless steel sheets under coupling mechanism

Feasibility Studies on Underwater Laser Surface Hardening Process

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