Verificação da possibilidade de identificação da transferência metálica no processo MIG/MAG pulsado através de um sensor óptico

Abstract

This work is aimed to verify the possibility of the use of an optical sensor to build an identification metal transfer device, with low costs and high flexibility, in pulsed GMAW.A silicon photodiode and an electronic interface capable to detect this arc light flux were employed. The automated welding pulsed was conducted in low carbon steel, using an electronic power source. The metal transfer was recorded by high-speed camera to validate the device efficiency. The voltage and current welding signals, as well as, the optical sensor and camera signal were synchronized to guarantee suitable analysis. The obtained results showed that the device is suitable to be used for metal transfer identification with good performance in low carbon steel. Thus, it is possible to assert that the developed device is a powerful tool, which would be applied in optimization of pulsed GMAW welding.