TY - JOUR
T1 - Investigation on the influence of various welding parameters on the arc thermal efficiency of the GTAW process by calorimetric method
AU - Nasiri, Mohammad Bagher
AU - Behzadinejad, Masoud
AU - Latifi, Hamidreza
AU - Martikainen, Jukka
PY - 2014
Y1 - 2014
N2 - Arc efficiency of Gas Tungsten Arc Welding (GTAW) was determined by calorimetric method. A water-cooled anode calorimeter was designed and manufactured to measure the arc thermal efficiency, which was determined as a function of current, arc length, polarity and gas flow rate for GTAW of mild steel. With Direct Current Electrode Negative (DCEN) polarity and 5 mm arc length, a thermal efficiency of 67±4% was obtained, which was independent of the welding current. With Direct Current Electrode Positive (DCEP) polarity and 5 mm arc length, arc thermal efficiency was determined as 52±4%. The experimental data show that the arc efficiency decreases from 67% to 58% and 51% as the arc length increases from 5 mm to 11 and 17.5 mm, respectively. The experimental results also show that the arc efficiency is not significantly affected by the shielding gas flow rate.
AB - Arc efficiency of Gas Tungsten Arc Welding (GTAW) was determined by calorimetric method. A water-cooled anode calorimeter was designed and manufactured to measure the arc thermal efficiency, which was determined as a function of current, arc length, polarity and gas flow rate for GTAW of mild steel. With Direct Current Electrode Negative (DCEN) polarity and 5 mm arc length, a thermal efficiency of 67±4% was obtained, which was independent of the welding current. With Direct Current Electrode Positive (DCEP) polarity and 5 mm arc length, arc thermal efficiency was determined as 52±4%. The experimental data show that the arc efficiency decreases from 67% to 58% and 51% as the arc length increases from 5 mm to 11 and 17.5 mm, respectively. The experimental results also show that the arc efficiency is not significantly affected by the shielding gas flow rate.
KW - Arc length
KW - Arc welding
KW - GTAW
KW - Polarity
KW - Thermal arc efficiency
KW - Water-cooled anode calorimeter
UR - http://www.scopus.com/inward/record.url?scp=84906243696&partnerID=8YFLogxK
U2 - 10.1007/s12206-014-0736-8
DO - 10.1007/s12206-014-0736-8
M3 - Article
AN - SCOPUS:84906243696
SN - 1738-494X
VL - 28
SP - 3255
EP - 3261
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
IS - 8
ER -