A system and method for detecting physical characteristics of a welding arc

Abstract

The application discloses a kind of welding arc physical characteristic detection system and method, detection system includes PLC, touch screen, A / D module, welding power supply, adjustable resistance box, current sensor, voltage sensor, pressure sensor, temperature sensor, water-cooled welding torch, water-cooled copper mechanism etc.;System parameters and function are set through touch screen, then the welding arc between the refractory alloy electrode of water-cooled welding torch and water-cooled copper mechanism is ignited, then PLC receives the arc physical signal sample value transmitted by A / D module, after digital filtering, the welding arc physical characteristic detection value is transmitted to touch screen to display numerical value or graph, while adjustable resistance box periodically adjusts welding current and arc voltage, realizes the cyclic detection and display of welding arc physical characteristic.The detection system of the application is simple in structure, convenient to operate, rich in function, can detect arc static characteristic, arc dynamic characteristic, arc length, heat affected zone temperature and arc force, and is practical.

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