Laser-TIG welding of galvanized steel - numerical and experimental assessment of the effect of arc in various setups

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F21%3A00551127" target="_blank" >RIV/68081731:_____/21:00551127 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1757-899X/1135/1/012007" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/1135/1/012007</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/1135/1/012007" target="_blank" >10.1088/1757-899X/1135/1/012007</a>

Result language
angličtina
Original language name
Laser-TIG welding of galvanized steel - numerical and experimental assessment of the effect of arc in various setups
Original language description
The technology of laser-TIG welding utilizes the arc as a secondary heat source during laser welding. In TIG-leading configuration, the low-current arc precedes the beam to preheat the material. The numerical simulations representing various setups combining laser and arc were performed to study the changes of thermal cycles on the interface of thin metal sheets of overlap joint. The relations between the position of the arc towards the beam, additional heat input, and temperature gradients are discussed. The technology of laser-TIG welding of zinc-coated deep-drawing steel was experimentally applied in the same joint configuration. A good agreement between the calculated and experimental welds was achieved. The arc current less than 40 A did not cause the vaporization, neither oxidation of zinc coating on the interface surface of metal sheets. Nevertheless, the quality of laser-TIG welds was better compared to laser welds. The 40A arc current increased the heat input by about 50% and led to an almost 60% decrease in cooling rate compared to autonomous laser welding. Prolonged heating and cooling time are the key factors of improving the weld quality.
Czech name
—
Czech description
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Project
<a href="/en/project/TH04010366" target="_blank" >TH04010366: Advanced laser welding methods for the automotive industry</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
IOP Conference Series: Materials Science and Engineering
ISBN
—
ISSN
1757-8981
e-ISSN
1757-899X
Number of pages
10
Pages from-to
012007
Publisher name
IOP Publishing
Place of publication
Bristol
Event location
Luleå
Event date
Jan 18, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000766307500007

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