Details
| Original language | English |
|---|---|
| Article number | 042044 |
| Journal | Journal of laser applications |
| Volume | 33 |
| Issue number | 4 |
| Publication status | Published - 9 Nov 2021 |
| Externally published | Yes |
Abstract
The "laser assisted double wire welding with nontransferred arc"utilizes an arc burning between two laterally fed wires combined with a laser beam source and beam guidance. By oscillating in the transverse direction, the necessary thermal energy is put locally in a targeted manner and results in a homogeneous temperature profile overall. This leads to the uniform melting of the substrate surface so that complete fusion is achieved over the cross section. The linear oscillation of the laser beam is characterized by a sinusoidal function whose extrema are located in the edge regions of the melt pool and, due to the low velocity, pulls the melt pool apart. In this work, the influence of laser parameters on the seam geometry of generatively manufactured structures is investigated. These include pendulum amplitude, defocusing, and laser beam position of a disk laser with a wavelength at 1030 nm. This enables the selective adjustment of the seam width and seam height, thus allowing to generate structures of 316L at application rates of up to 21 kg/h using 400 A current for the arc [A. Barroi, J. Hermsdorf, U. Prank, and S. Kaierle, "A novel approach for high deposition rate cladding with minimal dilution with an arc - laser process combination,"Phys. Proc. 41, 249-254 (2013)]. In order to illustrate the effect of the laser beam on the melt pool, the processes are visually and thermally documented with a thermos camera and 300 fps. Furthermore, the influence of preheating by laser radiation on the seam quality and geometry is shown. The topology and geometry of the individual seams are determined using a confocal microscope. Thus, a minimal irregular seam of approximately 10 mm beginning at a defocusing of -1 mm and a laser beam position of -3.5 mm in the melt pool is achieved.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Biomedical Engineering
- Physics and Astronomy(all)
- Instrumentation
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In: Journal of laser applications, Vol. 33, No. 4, 042044, 09.11.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of the laser beam parameters in the laser assisted double wire welding with nontransferred arc process on the seam geometry of generatively manufactured structures
AU - Bokelmann, Tjorben
AU - Tegtmeier, Marijan
AU - Lammers, Marius
AU - Hermsdorf, Jörg
AU - Kaierle, Stefan
AU - Emadmostoufi, Sobhan
AU - Mokrov, Oleg
AU - Sharma, Rahul
AU - Reisgen, Uwe
N1 - Funding Information: The investigations have been carried out within the research project DFG (No. 423140171). The authors would like to express their special gratitude to the German Research Foundation (DFG).
PY - 2021/11/9
Y1 - 2021/11/9
N2 - The "laser assisted double wire welding with nontransferred arc"utilizes an arc burning between two laterally fed wires combined with a laser beam source and beam guidance. By oscillating in the transverse direction, the necessary thermal energy is put locally in a targeted manner and results in a homogeneous temperature profile overall. This leads to the uniform melting of the substrate surface so that complete fusion is achieved over the cross section. The linear oscillation of the laser beam is characterized by a sinusoidal function whose extrema are located in the edge regions of the melt pool and, due to the low velocity, pulls the melt pool apart. In this work, the influence of laser parameters on the seam geometry of generatively manufactured structures is investigated. These include pendulum amplitude, defocusing, and laser beam position of a disk laser with a wavelength at 1030 nm. This enables the selective adjustment of the seam width and seam height, thus allowing to generate structures of 316L at application rates of up to 21 kg/h using 400 A current for the arc [A. Barroi, J. Hermsdorf, U. Prank, and S. Kaierle, "A novel approach for high deposition rate cladding with minimal dilution with an arc - laser process combination,"Phys. Proc. 41, 249-254 (2013)]. In order to illustrate the effect of the laser beam on the melt pool, the processes are visually and thermally documented with a thermos camera and 300 fps. Furthermore, the influence of preheating by laser radiation on the seam quality and geometry is shown. The topology and geometry of the individual seams are determined using a confocal microscope. Thus, a minimal irregular seam of approximately 10 mm beginning at a defocusing of -1 mm and a laser beam position of -3.5 mm in the melt pool is achieved.
AB - The "laser assisted double wire welding with nontransferred arc"utilizes an arc burning between two laterally fed wires combined with a laser beam source and beam guidance. By oscillating in the transverse direction, the necessary thermal energy is put locally in a targeted manner and results in a homogeneous temperature profile overall. This leads to the uniform melting of the substrate surface so that complete fusion is achieved over the cross section. The linear oscillation of the laser beam is characterized by a sinusoidal function whose extrema are located in the edge regions of the melt pool and, due to the low velocity, pulls the melt pool apart. In this work, the influence of laser parameters on the seam geometry of generatively manufactured structures is investigated. These include pendulum amplitude, defocusing, and laser beam position of a disk laser with a wavelength at 1030 nm. This enables the selective adjustment of the seam width and seam height, thus allowing to generate structures of 316L at application rates of up to 21 kg/h using 400 A current for the arc [A. Barroi, J. Hermsdorf, U. Prank, and S. Kaierle, "A novel approach for high deposition rate cladding with minimal dilution with an arc - laser process combination,"Phys. Proc. 41, 249-254 (2013)]. In order to illustrate the effect of the laser beam on the melt pool, the processes are visually and thermally documented with a thermos camera and 300 fps. Furthermore, the influence of preheating by laser radiation on the seam quality and geometry is shown. The topology and geometry of the individual seams are determined using a confocal microscope. Thus, a minimal irregular seam of approximately 10 mm beginning at a defocusing of -1 mm and a laser beam position of -3.5 mm in the melt pool is achieved.
UR - http://www.scopus.com/inward/record.url?scp=85119047394&partnerID=8YFLogxK
U2 - 10.2351/7.0000521
DO - 10.2351/7.0000521
M3 - Article
AN - SCOPUS:85119047394
VL - 33
JO - Journal of laser applications
JF - Journal of laser applications
SN - 1042-346X
IS - 4
M1 - 042044
ER -