METODO E APPARATO PER MISURARE UNA PENETRAZIONE DI SALDATURA IN UN PROCEDIMENTO DI SALDATURA AD ARCO

METODO E APPARATO PER MISURARE UNA PENETRAZIONE DI SALDATURA IN UN PROCEDIMENTO DI SALDATURA AD ARCO

The penetration in an arc welding process is measured in real time by monitoring the natural frequency of oscillation of the weld pool. Spatial oscillations are induced in the weld pool by modulating either the shielding gas or the welding current at a plurality of different frequencies, and the lig...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: ROBERT DAVID LILLQUIST, ALLEN WHITMORE CASE JR
Format: Patent
Sprache:ita
Schlagworte:
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:The penetration in an arc welding process is measured in real time by monitoring the natural frequency of oscillation of the weld pool. Spatial oscillations are induced in the weld pool by modulating either the shielding gas or the welding current at a plurality of different frequencies, and the light reflected from the pool at a non-specular angle is sensed and processed to determine the natural frequency of oscillation. Both pulse and swept frequency modulations are employed for excitation of the weld pool.