Avaliação do teor de fumos em processos de soldagem ao arco elétrico com eletrodo revestido.

Abstract

The influence of the features of the electrode covering and the parameters of welding on the amount of welding fumes in the Shielded Metal Arc Weldding Process. Was evaluated. For in such a way, a system for fumes collection was elaborated in according to International Norm ANSI/AWSF1.2-92. To evaluate the effect of the parameters of welding with currents varying from a 85 to 145 A , and tension varying between 20V and 31V, had been executed, remaining constant the welding speed. Celulosic (AWS E 6010), Rutilic (AWS E 6013) and basic (AWS E 7018) Electrode type. Gotten from a three different manufacturers had been used. It was verified that the values of the welding fumes amounts varied by variyng the arc power, the electrode covering, the manufacturer, and the polarity used.