Title: Numerical modelling of industrial scale high frequency welding of cladded pipes

Authors: Wladimir Ebel; Martin Kroll; Alexander Nikanorov; Egbert Baake

Addresses: Institute of Electrotechnology, Leibniz University of Hannover, Wilhelm-Busch-Str. 4, D-30167 Hannover, Germany ' Institute for Machine Tools and Production Processes, Technische Universität Chemnitz, Reichenhainer Str. 70, D-09126 Chemnitz, Germany ' Institute of Electrotechnology, Leibniz University of Hannover, Wilhelm-Busch-Str. 4, D-30167 Hannover, Germany ' Institute of Electrotechnology, Leibniz University of Hannover, Wilhelm-Busch-Str. 4, D-30167 Hannover, Germany :

Abstract: The aim of this work is to develop a model to simulate the high frequency (HF) welding process for cladded pipes and to find process parameters to solve the inconvenient power proportion between the cladding layers. A 2D model of HF pipe or profile welding was created. This model considers the most important parameters of the longitudinal HF-welding process of thin walled cladded pipes. Effects of welding speed, current frequency and material properties have been examined. The material combination of the metal sheets contains S235 as the carrier material and the corrosion resistant alloy 625 for the inner tube cladding. The results have been compared to an available experiment and to gain the basic validation of the model. An approach is proposed to facilitate high frequency welding of cladded pipes under consideration of industrial requirements for a chosen material combination.

Keywords: cladded material welding; profile welding; high frequency welding; induction welding; longitudinal pipe welding; longitudinal profile welding; S235; alloy 625; continuous pipe production; divergent compounds welding; electric resistance welding.

DOI: 10.1504/IJMMP.2018.093288

International Journal of Microstructure and Materials Properties, 2018 Vol.13 No.1/2, pp.27 - 38

Received: 30 Sep 2017
Accepted: 12 Feb 2018
Published online: 24 Jul 2018 *

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