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1. (WO2018146023) METHOD AND APPARATUS FOR DETECTING A WELDING WIRE DIAMETER OR A WELDING WIRE COMPOSITION IN A WELDING DEVICE

Pub. No.:    WO/2018/146023    International Application No.:    PCT/EP2018/052681
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Sat Feb 03 00:59:59 CET 2018
IPC: B23K 9/095
B23K 9/12
Applicants: FRONIUS INTERNATIONAL GMBH
Inventors: HÖLLER, Dieter
HARTL, Heinz
FRIEDL, Helmut
WIMMER, Manfred
Title: METHOD AND APPARATUS FOR DETECTING A WELDING WIRE DIAMETER OR A WELDING WIRE COMPOSITION IN A WELDING DEVICE
Abstract:
A detection apparatus (1) for detecting a diameter and/or a composition of a welding wire (5) and/or a welding electrode (5) for a welding device, the detection apparatus (1) having: an oscillating circuit (2) which has a coil (2A), through which the welding wire (5) and/or the welding electrode (5) is guidable; and an evaluation unit (3), connected to the oscillating circuit (2), for establishing at least one first oscillating circuit parameter (SKP1), which is characteristic for a damping of an oscillation signal occurring in the oscillating circuit (2), and at least one second oscillating circuit parameter (SKP2), which is characteristic for a signal frequency, f, of the oscillation signal occurring in the oscillating circuit (2), wherein the evaluation unit (3) detects the diameter and/or the composition of the welding wire (5) and/or welding electrode (5) guided through the coil (2A) of the oscillating circuit (2) on the basis of the established oscillating circuit parameters (SKP1, SKP2).