Comparative Analysis of Hygiene and Sanitary Characteristics of Consumable Electrode Gas-Shielded Welding

Abstract

Experimental research has been carried out to determine quantitative content of solid and gas component of welding aerosol in mechanized gas-shielded welding with constant and pulsewise electrode wire supply. As a result, it has been established that the pulsewise electrode wire supply reduces the release of harmful components of welding aerosol (welding dust СО and SiO2) by 20-25% thanks to lower energy characteristics (the transfer frequency of electrode metal droplets and the time of their exposure to critical temperatures at a short-circuit).

Nanoscale Structures of Laser–Arc Welded Joints of High-Strength Low-Alloy Steels

“…Cracking is avoided by slowing down the cooling during welding, performing various kinds of heating, which complicates the technological process and worsens the working conditions of the staff, post-weld heat treatment or using high-alloyed electrode materials [1-3, 12-14]. The last ones are characterized by high cost and negatively affect the environmental friendliness of the process [15,16].…”

Impact of Electrode Wire Feed Ways on Residual Stresses in Welded Joints

“…An electrode wire pulse feed is one of the techniques that can be used to decrease residual stresses and deformation. It is caused by the fact that heat input into metal is lower at welding of one type size of the joint [2,3].…”