Details
| Original language | English |
|---|---|
| Pages (from-to) | 193-213 |
| Number of pages | 21 |
| Journal | Lasers in Manufacturing and Materials Processing |
| Volume | 9 |
| Issue number | 2 |
| Early online date | 25 Mar 2022 |
| Publication status | Published - Jun 2022 |
| Externally published | Yes |
Abstract
Claddings are used to protect areas of components that are exposed to particular chemical, physical or tribological stresses. The aim when developing a cladding process is to achieve a cladding with low waviness in order to reduce the amount of machining required. Computational models and FEA simulations can be used to determine process parameters for claddings with low rework including a prediction of the height and width of a single weld seam aswell as the development of welding strategies. In this paper empirical models describing the geometry of single weld seams on a substrate manufactured with a coaxial laser hot-wire cladding process are investigated for three steel wire materials and different welding parameters. The coordinates of surface points of the weld seams were detected using a laser scanning microscope and post-processed by a self-created script. In order to describe the cross sectional shape of the weld seams, the parameters of parabolic, cosinusiodal or circular arc model functions are derived from the surface data using a fitting algorithm. For the tested wire materials, an effect of the wire material on the shape of the weld seam was not observed. The investigations also show that regardless of the varied welding parameter set or wire material, a circular model function appears to be the most suitable model shape for describing the cross sectional weld seam geometry in coaxial laser metal deposition with hot-wire. The regression residua using a circular arc model function ranged from 18.9 μ m to 34.6 μ m, which indicates a good approximation.
Keywords
- Cladding, Empirical model, Laser metal deposition with hot-wire, LMD-W, Weld seam geometry
ASJC Scopus subject areas
- Mathematics(all)
- Modelling and Simulation
- Physics and Astronomy(all)
- Nuclear and High Energy Physics
- Physics and Astronomy(all)
- Instrumentation
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Lasers in Manufacturing and Materials Processing, Vol. 9, No. 2, 06.2022, p. 193-213.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Empirical Model for the Description of Weld Seam Geometry in Coaxial Laser Hot-Wire Deposition Welding Processes with Different Steel Wires
AU - Budde, Laura
AU - Biester, Kai
AU - Huse, Michael
AU - Lammers, Marius
AU - Hermsdorf, Jörg
AU - Overmeyer, Ludger
N1 - Funding Information: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - CRC 1153, subproject A4 - 252662854.
PY - 2022/6
Y1 - 2022/6
N2 - Claddings are used to protect areas of components that are exposed to particular chemical, physical or tribological stresses. The aim when developing a cladding process is to achieve a cladding with low waviness in order to reduce the amount of machining required. Computational models and FEA simulations can be used to determine process parameters for claddings with low rework including a prediction of the height and width of a single weld seam aswell as the development of welding strategies. In this paper empirical models describing the geometry of single weld seams on a substrate manufactured with a coaxial laser hot-wire cladding process are investigated for three steel wire materials and different welding parameters. The coordinates of surface points of the weld seams were detected using a laser scanning microscope and post-processed by a self-created script. In order to describe the cross sectional shape of the weld seams, the parameters of parabolic, cosinusiodal or circular arc model functions are derived from the surface data using a fitting algorithm. For the tested wire materials, an effect of the wire material on the shape of the weld seam was not observed. The investigations also show that regardless of the varied welding parameter set or wire material, a circular model function appears to be the most suitable model shape for describing the cross sectional weld seam geometry in coaxial laser metal deposition with hot-wire. The regression residua using a circular arc model function ranged from 18.9 μ m to 34.6 μ m, which indicates a good approximation.
AB - Claddings are used to protect areas of components that are exposed to particular chemical, physical or tribological stresses. The aim when developing a cladding process is to achieve a cladding with low waviness in order to reduce the amount of machining required. Computational models and FEA simulations can be used to determine process parameters for claddings with low rework including a prediction of the height and width of a single weld seam aswell as the development of welding strategies. In this paper empirical models describing the geometry of single weld seams on a substrate manufactured with a coaxial laser hot-wire cladding process are investigated for three steel wire materials and different welding parameters. The coordinates of surface points of the weld seams were detected using a laser scanning microscope and post-processed by a self-created script. In order to describe the cross sectional shape of the weld seams, the parameters of parabolic, cosinusiodal or circular arc model functions are derived from the surface data using a fitting algorithm. For the tested wire materials, an effect of the wire material on the shape of the weld seam was not observed. The investigations also show that regardless of the varied welding parameter set or wire material, a circular model function appears to be the most suitable model shape for describing the cross sectional weld seam geometry in coaxial laser metal deposition with hot-wire. The regression residua using a circular arc model function ranged from 18.9 μ m to 34.6 μ m, which indicates a good approximation.
KW - Cladding
KW - Empirical model
KW - Laser metal deposition with hot-wire
KW - LMD-W
KW - Weld seam geometry
UR - http://www.scopus.com/inward/record.url?scp=85127283482&partnerID=8YFLogxK
U2 - 10.1007/s40516-022-00170-w
DO - 10.1007/s40516-022-00170-w
M3 - Article
AN - SCOPUS:85127283482
VL - 9
SP - 193
EP - 213
JO - Lasers in Manufacturing and Materials Processing
JF - Lasers in Manufacturing and Materials Processing
SN - 2196-7229
IS - 2
ER -