DUAL WIRE WELDING OR ADDITIVE MANUFACTURING SYSTEM AND METHOD

A welding or additive manufacturing system (100) includes a contact tip assembly (200) having first and second exit orifices. A wire feeder (105) is configured to deliver a first and second wire electrodes (E1, E2) through the exit orifices. An arc generation power supply is configured to output a c...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	FLEMING, Daniel P, HENRY, Judah Benjamin, PETERS, Steven R
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING 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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A welding or additive manufacturing system (100) includes a contact tip assembly (200) having first and second exit orifices. A wire feeder (105) is configured to deliver a first and second wire electrodes (E1, E2) through the exit orifices. An arc generation power supply is configured to output a current waveform to the wire electrodes simultaneously, through the contact tip assembly (200). The current waveform includes a bridging current portion (302), and a background current portion (304) having a lower current level than the bridging current portion (302). The bridging current portion (302) has a current level sufficient to form a bridge droplet between the wire electrodes before the bridge droplet is transferred to a molten puddle during a deposition operation. Solid portions of the wire electrodes do not contact each other during the deposition operation. The bridge droplet is transferred to the molten puddle during a short circuit event between the molten puddle and the wire electrodes.