Measuring the process efficiency of controlled gas metal arc welding processes
- 1 July 2011
- journal article
- Published by SAGE Publications in Science and Technology of Welding and Joining
- Vol. 16 (5) , 412-417
Abstract
The thermal or process efficiency in gas metal arc welding (GMAW) is a crucial input to numerical models of the process and requires the use of an accurate welding calorimeter. In this paper, the authors compare a liquid nitrogen calorimeter with an insulated box calorimeter for measuring the process efficiency of Fronius cold metal transfer, Lincoln surface tension transfer and RapidArc, Kemppi FastRoot and standard pulsed GMAW. All of the controlled dip transfer processes had a process efficiency of ∼85% when measured with the liquid nitrogen calorimeter. This value was slightly higher when welding in a groove and slightly lower for the RapidArc and pulsed GMAW. The efficiency measured with the insulated box calorimeter was slightly lower, but it had the advantage of a much smaller random error.Keywords
This publication has 9 references indexed in Scilit:
- Metal vapour causes a central minimum in arc temperature in gas–metal arc welding through increased radiative emissionJournal of Physics D: Applied Physics, 2009
- Welding process impact on residual stress and distortionScience and Technology of Welding and Joining, 2009
- Stationary GMAW-P weld metal deposit spreadingScience and Technology of Welding and Joining, 2009
- Investigations of GMAW plasma by optical emission spectroscopyPlasma Sources Science and Technology, 2007
- Predictions of weld pool profiles using plasma physicsJournal of Physics D: Applied Physics, 2006
- Advanced welding processes2006
- Arc power and efficiency in gas tungsten arc welding of aluminiumScience and Technology of Welding and Joining, 2005
- Measurement and calculation of arc power and heat transfer efficiency in pulsed gas metal arc weldingScience and Technology of Welding and Joining, 2003
- Welding Metallurgy2002