In the laser-assisted welding with electric resistance heating of steel pipe, it was found by experiments that the incident beam profile has significant influence on the welding quality-generating defect in the weld part. We developed the simulation model for the wedge shape welding method in order to decide the most suitable laser beam profile. It is the three-dimensional heat transfer model with two heat sources, Joule heat by electric resistance and multiply reflected and absorbed laser power by the wedge walls. After confirmation of its validity by comparing model outputs with experimental data, we determined the most suitable beam profile in this welding method. Next, in order to realise the above determined profile, we designed a beam shaping optical system which consists of sperical and cylindrical mirrors. In a production line, it is required to change quickly the beam size corresponding to the size of a workpiece. Finally we provided the mirror controlling system based on the calculation of light paths tracking method.
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ICALEO '89: Proceedings of the Materials Processing Conference
October 15–20, 1989
Orlando, Florida, USA
ISBN:
978-0-912035-40-6
PROCEEDINGS PAPER
Beam profile control in laser-assisted welding of steel pipe Available to Purchase
O. Ichiko;
O. Ichiko
Electronics and Control Systems R&D Laboratories, Central R&D-Bureau, Nippon Steel Corporation
, 5-10-1 Fuchinobe, Sagamihara-city, Kanagawa 229, Japan
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K. Minamida;
K. Minamida
Electronics and Control Systems R&D Laboratories, Central R&D-Bureau, Nippon Steel Corporation
, 5-10-1 Fuchinobe, Sagamihara-city, Kanagawa 229, Japan
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N. Hamada;
N. Hamada
Electronics and Control Systems R&D Laboratories, Central R&D-Bureau, Nippon Steel Corporation
, 5-10-1 Fuchinobe, Sagamihara-city, Kanagawa 229, Japan
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H. Haga;
H. Haga
Electronics and Control Systems R&D Laboratories, Central R&D-Bureau, Nippon Steel Corporation
, 5-10-1 Fuchinobe, Sagamihara-city, Kanagawa 229, Japan
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N. Mizuhashi
N. Mizuhashi
Electronics and Control Systems R&D Laboratories, Central R&D-Bureau, Nippon Steel Corporation
, 5-10-1 Fuchinobe, Sagamihara-city, Kanagawa 229, Japan
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Published Online:
October 01 1989
Citation
O. Ichiko, K. Minamida, N. Hamada, H. Haga, N. Mizuhashi; October 15–20, 1989. "Beam profile control in laser-assisted welding of steel pipe." Proceedings of the ICALEO '89: Proceedings of the Materials Processing Conference. ICALEO '89: Proceedings of the Materials Processing Conference. Orlando, Florida, USA. (pp. pp. 155-165). ASME. https://doi.org/10.2351/1.5058314
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