Czech Welding Institute Ltd.

Ostrava, Czech Republic

Czech Welding Institute Ltd.

Ostrava, Czech Republic
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Koukal J.,Czech Welding Institute Ltd. | Koukal J.,VSB - Technical University of Ostrava | Sondel M.,Czech Welding Institute Ltd. | Sondel M.,VSB - Technical University of Ostrava | And 2 more authors.
Composite Construction in Steel and Concrete VII - Proceedings of the 2013 International Conference on Composite Construction in Steel and Concrete | Year: 2013

This paper describes the welding procedure qualification of the multilayer "lamellar" flange for modern bridge construction made in the Czech Republic. The finegrained structural steel was used for construction and welding qualification. Weldability of this steel grade is briefly mentioned. Technological and proposed welding processes including weld joint preparation are described. FCAW welding in the overhead position is carried out by the seamless flux cored wire and SAW welding using solid wire in the flat position is applied. All required tests on the multilayer weld joint including tensile test, bend test, hardness distribution, impact test, and macroscopic evaluation are investigated. All test results are in good agreement with EN ISO 15614-1 standard requirements. Based on the satisfactory results, the proposed welding procedure for the multilayer flange weld joint can be qualified. © ASCE.

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