| 2021 №05 (01) |
DOI of Article 10.37434/tpwj2021.05.02 |
2021 №05 (03) |
The Paton Welding Journal, 2021, #5, 12-17 pages
Improving the efficiency of robotic fabrication of steel truss welded structures
V.M. Korzhyk1, A.A. Grynyuk1, V.Yu. Khaskin1, Ye.V. Illiashenko1, I.M. Klochkov1, O.V. Ganushchak1, Yu Xuefen2 and Liuyi Huang2
1E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
2Zhejiang Academy of Special Equipment Science 310016, Jianggan District, Hangzhou, Zhejiang, 211, Kaixuan Road, China
Abstract
It is shown that to increase the productivity of robotic fabrication of fragments of steel truss RHS (Rectangular Hollow Section) structures it is advisable to make workpieces by precision laser cutting with subsequent assembly of fragments by spot tack welds and consumable-arc seam welding with current-carrying (hot) filler wire. Laser cutting with radiation power of ~1.0 kW and compressed air blowing at the pressure of 1.5 MPa allows obtaining ready for further welding elements of RHS structures with the accuracy of 0‒0.1 mm. It is established that in the case of application of consumable-arc welding with hot filler wire, the speed increases by ~1.5 times compared to conventional consumable- arc welding. 13 Ref., 6 Figures.
Keywords: laser cutting, welding, consumable electrode arc, current-carrying filler wire, fillet joints, carbon steel, structures
Received 26.04.2021
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