scholarly journals Stainless steel manual metal arc welding fumes in rats.

1983 ◽  
Vol 40 (2) ◽  
pp. 229-234 ◽  
Author(s):  
P L Kalliomaki ◽  
E Lakomaa ◽  
K Kalliomaki ◽  
M Kiilunen ◽  
R Kivela ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Arc Welding ◽  
Welding Fumes ◽  
Metal Arc Welding

Cr 6+ reduction in welding fumes by nano composite coatings on stainless steel manual metal arc welding electrodes

2018 ◽  
Vol 114 ◽  
pp. 334-346 ◽  
Author(s):  
Vishnu B.R. ◽  
Sivapirakasam S.P. ◽  
Satpathy KK ◽  
Shaju K. Albert ◽  
Gopa Chakraborty
Keyword(s):  
Stainless Steel ◽  
Arc Welding ◽  
Composite Coatings ◽  
Welding Fumes ◽  
Nano Composite ◽  
Metal Arc Welding

Retention of stainless steel manual metal arc welding fumes in rats

1982 ◽  
Vol 10 (2) ◽  
pp. 223-232 ◽  
Author(s):  
Pirkko‐Liisa Kalliomaki ◽  
M. Kiilunen ◽  
V. Vaaranen ◽  
Eeva‐Liisa Lakomaa ◽  
K. Kalliomäki ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Arc Welding ◽  
Welding Fumes ◽  
Metal Arc Welding

Bioactivity of Circulatory Factors After Pulmonary Exposure to Mild or Stainless Steel Welding Fumes

2020 ◽  
Vol 177 (1) ◽  
pp. 108-120
Author(s):  
Vamsi Kodali ◽  
Mohammad Shoeb ◽  
Terence G Meighan ◽  
Tracy Eye ◽  
Sherri A Friend ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Endothelial Cells ◽  
Endothelial Function ◽  
Arc Welding ◽  
Ex Vivo ◽  
Welding Fumes ◽  
Pulmonary Exposure ◽  
Metal Arc Welding ◽  
Steel Electrodes

Abstract Studies suggest that alterations in circulating factors are a driver of pulmonary-induced cardiovascular dysfunction. To evaluate, if circulating factors effect endothelial function after a pulmonary exposure to welding fumes, an exposure known to induce cardiovascular dysfunction, serum collected from Sprague Dawley rats 24 h after an intratracheal instillation exposure to 2 mg/rat of 2 compositionally distinct metal-rich welding fume particulates (manual metal arc welding using stainless steel electrodes [MMA-SS] or gas metal arc welding using mild steel electrodes [GMA-MS]) or saline was used to test molecular and functional effects of in vitro cultures of primary cardiac microvascular endothelial cells (PCMEs) or ex vivo organ cultures. The welding fumes elicited significant pulmonary injury and inflammation with only minor changes in measured serum antioxidant and cytokine levels. PCME cells were challenged for 4 h with serum collected from exposed rats, and 84 genes related to endothelial function were analyzed. Changes in relative mRNA patterns indicated that serum from rats exposed to MMA-SS, and not GMA-MS or PBS, could influence several functional aspects related to endothelial cells, including cell migration, angiogenesis, inflammation, and vascular function. The predictions were confirmed using a functional in vitro assay (scratch assay) as well as an ex vivo multicellular environment (aortic ring angiogenesis assay), validating the concept that endothelial cells can be used as an effective screening tool of exposed workers for determining bioactivity of altered circulatory factors. Overall, the results indicate that pulmonary MMA-SS fume exposure can cause altered endothelial function systemically via altered circulating factors.

Features of nucleation in welding fumes from gas metal arc welding

2019 ◽  
Vol 137 ◽  
pp. 105439 ◽  
Author(s):  
V.I. Vishnyakov ◽  
S.V. Kozytskyi ◽  
A.A. Ennan
Keyword(s):  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Fumes ◽  
Metal Arc Welding

Effect of Post-Weld Heat Treatment on Hardness in Superduplex Stainless Steel ASTM A890/A890M - Grade 6A

2020 ◽  
Vol 1012 ◽  
pp. 296-301
Author(s):  
Clélia Ribeiro de Oliveira ◽  
Eloá Lopes Maia ◽  
Solange T. da Fonseca ◽  
Marcelo Martins ◽  
Julián Arnaldo Ávila Díaz ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Arc Welding ◽  
Treatment Condition ◽  
Heat Treatment Condition ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding ◽  
Superduplex Stainless Steel ◽  
Secondary Austenite ◽  
Welding Processes

Superduplex stainless steel alloy exhibit high mechanical and corrosion resistance, which main industrial application is in the petrochemical industry. The manufacture and maintenance of such equipment usually involve welding processes, followed by post-welded heat treatment and it often becomes impossible to apply heat treatments. Thereby, the purpose of this work is to verify the effect of a post-welded heat treatment on shielded metal arc welding in steel grade ASTM A890/A890M - grade 6A. The microstructure in the as-welded condition consisted of austenite, secondary austenite, and ferrite phases and, the post-welded heat treatment condition exhibited only austenite and ferrite. The hardness in the melt zone reached values of 300 HV after welding and, the value was reduced to 260 HV in the post-welded heat treatment condition.

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