TY - JOUR

T1 - High deposition rate welding with a laser line optics with the laser-assisted double-wire deposition welding process with nontransferred arc

AU - Biester, Kai

AU - Barroi, Alexander

AU - Bokelmann, Tjorben

AU - Lammers, Marius

AU - Hermsdorf, Jörg

AU - Kaierle, Stefan

N1 - Funding Information: The authors would like to express their sincere thanks to the project partner Laserline GmbH for providing the beam shaping optics. The results presented in this paper were obtained within the project “Flexible and efficient generation of unique ship components using an innovative laser-assisted additive manufacturing process (FLEXIGEN)” (No. 03SX517C). The authors acknowledge the Federal Ministry for Economic Affairs and Climate Action for their financial support of this project.

PY - 2022/11/1

Y1 - 2022/11/1

N2 - Laser-assisted double-wire welding with a nontransferred arc is used for cladding workpieces. The wire material is melted by an arc and dropped onto the substrate, where a laser beam is oscillated by a galvanometer scanner to achieve bonding of the melt with good contact angles that do not result in undercuts. In this study, the galvanometer scanner was replaced by a beam shaping optics generating a line with a width of 1.2 mm and a length of 9.1 mm. Based on Design of Experiments, the laser power was varied in a range from 1500 to 2000 W and the welding speed in a range from 600 to 800 mm/min. Single weld beads of AISI 316L were welded onto a mild steel of AISI 1024 according to a full factorial design at three repetitions per parameter set. The paper examines whether the contact angles of the weld beads produced with the line optics are comparable to those obtained by oscillating the laser beam. In addition, the dilution of the material with the substrate was determined in micrographs. The results show that the bonding to the substrate can be achieved. The parameter window for the laser power with beam shaping line optics is different from that with the oscillated laser beam. The required laser power is 1.5-2 times greater.

AB - Laser-assisted double-wire welding with a nontransferred arc is used for cladding workpieces. The wire material is melted by an arc and dropped onto the substrate, where a laser beam is oscillated by a galvanometer scanner to achieve bonding of the melt with good contact angles that do not result in undercuts. In this study, the galvanometer scanner was replaced by a beam shaping optics generating a line with a width of 1.2 mm and a length of 9.1 mm. Based on Design of Experiments, the laser power was varied in a range from 1500 to 2000 W and the welding speed in a range from 600 to 800 mm/min. Single weld beads of AISI 316L were welded onto a mild steel of AISI 1024 according to a full factorial design at three repetitions per parameter set. The paper examines whether the contact angles of the weld beads produced with the line optics are comparable to those obtained by oscillating the laser beam. In addition, the dilution of the material with the substrate was determined in micrographs. The results show that the bonding to the substrate can be achieved. The parameter window for the laser power with beam shaping line optics is different from that with the oscillated laser beam. The required laser power is 1.5-2 times greater.

UR - http://www.scopus.com/inward/record.url?scp=85139236901&partnerID=8YFLogxK

U2 - 10.2351/7.0000758

DO - 10.2351/7.0000758

M3 - Article

AN - SCOPUS:85139236901

VL - 34

JO - Journal of laser applications

JF - Journal of laser applications

SN - 1042-346X

IS - 4

M1 - 042010

ER -