Physical properties of the plasma-MIG welding arc
- 1 June 1975
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 8 (8) , 922-933
- https://doi.org/10.1088/0022-3727/8/8/006
Abstract
Describes measurements of the temperature distribution and the composition of the plasma-MIG arc system using optical spectroscopy. It is found that the central part of the arc contains the elements Fe, Mn, Cu, Ca and Ar at a temperature of about 7000K. The outer regions of the arc show only argon spectral lines and have much higher temperature value ( approximately=13000K). From these measurements a number of conclusions can be drawn about the physical properties of the plasma-MIG welding arc. The most important conclusion is that only a very small part of the wire current flows through the bright inner arc.Keywords
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