Title:
REAL TIME RESISTANCE MONITORING OF ARC WELDING CIRCUIT
Document Type and Number:
Japanese Patent JP2020163471
Kind Code:
A
Abstract:
To provide a real time resistance monitoring of an arc welding circuit.SOLUTION: A power supply device for welding or laminate molding comprises: an output circuit configured to generate a welding waveform; a current sensor for measuring a welding current generated by the output circuit; a voltage sensor for measuring an output voltage of the welding waveform; and a controller operatively connected to the output circuit to control the welding waveform, and operatively connected to the current sensor and the voltage sensor to monitor the welding current and the output voltage. A portion of the welding waveform includes a controlled change in current from a first level to a second level different from the first level. The controller is configured to determine a circuit inductance from the output voltage and the controlled change in current, and further determine a change in resistance of a consumable electrode in real time based on the circuit inductance.SELECTED DRAWING: Figure 3
Inventors:
DANIEL P FLEMING
JUDAH B HENRY
JONATHON C KELM
EDWARD D HILLEN
JUDAH B HENRY
JONATHON C KELM
EDWARD D HILLEN
Application Number:
JP2020057242A
Publication Date:
October 08, 2020
Filing Date:
March 27, 2020
Export Citation:
Assignee:
LINCOLN GLOBAL INC
International Classes:
B23K9/095
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Osamu Miyazaki
Tadahiko Ito
Osamu Miyazaki