Influence of Composition of Binder of Electrodes Coating on Cytotoxicity of Welding Aerosols

Abstract

The results of investigations of the levels of evolution, chemical composition and cytotoxicity of harmful substances evolved during welding by chromium-nickel high-alloy electrodes are presented in order to improve their sanitary-hygienic characteristics. It is shown that in order to create new grades of welding electrodes with the improved hygienic characteristics, it is necessary to possess not only the data of initial sanitary-hygienic evaluation, but also to have the results of biological investigations of WA toxicity. It was established that the application of a binder based on pure lithium or lithium-sodium potassium liquid glass in the electrodes coating instead of potassium-sodium allows reducing the level of evolution of welding aerosol into air, decreasing the content of highly-toxic hexavalent chromium in it and, therefore, its general toxicity.

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].…”

Шкідливі Та Небезпечні Речовини У Повітрі Робочої Зони Зварника При Дуговому Зварюванні Мідних Сплавів

“…Тому в повітрі робочої зони зварника при ручному дуговому зварюванні міді та її сплавів можуть бути присутні такі елементи як мідь, оксиди марганцю, оксиди цинку, фториди, алюміній, берилій, свинець та їх сплави. Ці речовини мають токсичну дію, викликають запалення слизової оболонки, нервові проблеми, лихоманку металевого диму [1].…”