Specification for Mild Steel Electrodes for Gas Metal-Arc Welding

10.1520/a0559 ◽  
1968 ◽  
Author(s):  
Keyword(s):  
Mild Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Metal Arc Welding ◽  
Steel Electrodes

scholarly journals Inhalation of iron-abundant gas metal arc welding-mild steel fume promotes lung tumors in mice

Toxicology ◽  
2018 ◽  
Vol 409 ◽  
pp. 24-32 ◽  
Author(s):  
L.M. Falcone ◽  
A. Erdely ◽  
V. Kodali ◽  
R. Salmen ◽  
L.A. Battelli ◽  
...  
Keyword(s):  
Mild Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Lung Tumors ◽  
Metal Arc Welding

scholarly journals Hazard of ultraviolet radiation emitted in gas metal arc welding of mild steel

2016 ◽  
Vol 58 (5) ◽  
pp. 452-459 ◽  
Author(s):  
Hitoshi Nakashima ◽  
Akihiro Utsunomiya ◽  
Jyunya Takahashi ◽  
Nobuyuki Fujii ◽  
Tsutomu Okuno
Keyword(s):  
Ultraviolet Radiation ◽  
Mild Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Metal Arc Welding

scholarly journals Occupational asthma due to gas metal arc welding on mild steel.

Thorax ◽  
1995 ◽  
Vol 50 (5) ◽  
pp. 587-589 ◽  
Author(s):  
O Vandenplas ◽  
F Dargent ◽  
J J Auverdin ◽  
J Boulanger ◽  
J M Bossiroy ◽  
...  
Keyword(s):  
Mild Steel ◽  
Arc Welding ◽  
Occupational Asthma ◽  
Gas Metal Arc Welding ◽  
Metal Arc Welding

scholarly journals Effects of Active Gases on Droplet Transfer and Weld Morphology in Pulsed-Current NG-GMAW of Mild Steel

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Guoqiang Liu ◽  
Xinhua Tang ◽  
Qi Xu ◽  
Fenggui Lu ◽  
Haichao Cui
Keyword(s):  
Mild Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Pulsed Current ◽  
Narrow Gap ◽  
Shielding Gas ◽  
Droplet Transfer ◽  
Pure Argon ◽  
Metal Arc Welding

AbstractThe current research of narrow-gap gas metal arc welding (NG-GMAW) primarily focuses on improving the sidewall fusion and avoiding the lack-of-fusion defect. However, the high cost and operation difficulty of the methods limit the industrial application. In this study, small amount of active gases CO2 and O2 were added into pure argon inert shielding gas to improve the weld formation of pulsed-current narrow-gap gas metal arc welding (NG-GMAW) of mild steel. Their effects on droplet transfer and arc behavior were investigated. A high-speed visual sensing system was utilized to observe the metal transfer process and arc morphology. When the proportion of CO2, being added into the pure argon shielding gas, changes from 5% to 25%, the metal transfer mode changes from pulsed spray streaming transfer to pulsed projected spray transfer, while it remains the pulsed spray streaming transfer when 2% to 10% O2 is added. Both CO2 and O2 are favorable to stabilizing arc and welding process. O2 is even more effective than CO2. However, O2 is more likely to cause slags on the weld surface, while CO2 can improve the weld appearance in some sense. The weld surface concavity in NG-GMAW is greatly influenced by the addition of active gas, but the weld width and weld penetration almost keep constant. This study proposes a new method which is beneficial to improving the weld bead formation and welding process stability.

scholarly journals Toxicity of stainless and mild steel particles generated from gas–metal arc welding in primary human small airway epithelial cells

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrea Cediel-Ulloa ◽  
Christina Isaxon ◽  
Axel Eriksson ◽  
Daniel Primetzhofer ◽  
Mauricio A. Sortica ◽  
...  
Keyword(s):  
Stem Cells ◽  
Stainless Steel ◽  
Mild Steel ◽  
Arc Welding ◽  
Metal Content ◽  
Gas Metal Arc Welding ◽  
Airway Epithelial Cells ◽  
Airway Epithelial ◽  
Metal Arc Welding ◽  
Small Airway Epithelial Cells

AbstractWelding fumes induce lung toxicity and are carcinogenic to humans but the molecular mechanisms have yet to be clarified. The aim of this study was to evaluate the toxicity of stainless and mild steel particles generated via gas–metal arc welding using primary human small airway epithelial cells (hSAEC) and ToxTracker reporter murine stem cells, which track activation of six cancer-related pathways. Metal content (Fe, Mn, Ni, Cr) of the particles was relatively homogenous across particle size. The particles were not cytotoxic in reporter stem cells but stainless steel particles activated the Nrf2-dependent oxidative stress pathway. In hSAEC, both particle types induced time- and dose-dependent cytotoxicity, and stainless steel particles also increased generation of reactive oxygen species. The cellular metal content was higher for hSAEC compared to the reporter stem cells exposed to the same nominal dose. This was, in part, related to differences in particle agglomeration/sedimentation in the different cell media. Overall, our study showed differences in cytotoxicity and activation of cancer-related pathways between stainless and mild steel welding particles. Moreover, our data emphasizes the need for careful assessment of the cellular dose when comparing studies using different in vitro models.

scholarly journals Effects of active gases on droplet transfer and weld morphology in pulsed-current NG-GMAW of mild steel

2021 ◽  
Author(s):  
Guoqiang Liu ◽  
Xinhua Tang ◽  
Qi Xu ◽  
Fenggui Lu ◽  
Haichao Cui
Keyword(s):  
Mild Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Pulsed Current ◽  
Narrow Gap ◽  
Shielding Gas ◽  
Droplet Transfer ◽  
Pure Argon ◽  
Metal Arc Welding

Abstract The current research of narrow-gap gas metal arc welding (NG-GMAW) primarily focuses on improving the sidewall fusion and avoiding the lack-of-fusion defect. However, the high cost and operation difficulty of the methods limit the industrial application. In this study, small amount of active gases CO2 and O2 were added into pure argon inert shielding gas to improve the weld formation of pulsed-current narrow-gap gas metal arc welding (NG-GMAW) of mild steel. Their effects on droplet transfer and arc behavior were investigated. A high-speed visual sensing system was utilized to observe the metal transfer process and arc morphology. When the proportion of CO2, being added into the pure argon shielding gas, changes from 5% to 25%, the metal transfer mode changes from pulsed spray streaming transfer to pulsed projected spray transfer, while it remains the pulsed spray streaming transfer when 2% to 10% O2 is added. Both CO2 and O2 are favorable to stabilizing arc and welding process. O2 is even more effective than CO2. However, O2 is more likely to cause slags on the weld surface, while CO2 can improve the weld appearance in some sense. The weld surface concavity in NG-GMAW is greatly influenced by the addition of active gas, but the weld width and weld penetration almost keep constant. This study proposes a new method which is beneficial to improving the weld bead formation and welding process stability.

Sign in / Sign up

Export Citation Format

Share Document