Abstract
Christensen et al. show that the average temperature of the molten pool reaches as high as 1.5-2.0 times the fusion temperature of the base metal when the welding arc is assumed as a moving point heat source.
In the present paper the molten pool is divided into two parts and the average temperatures are calculated as 1.5-2.95 times and 1.5-1.345 times the fusion temperature for the leading and trailing part of the molten pool respectively as the operational parameter n varies from zero to infinity. The border line of the two parts is MM' in Fig. 2.
It is well known that the temperatures of the molten pool are estimated as 1800-2200°C for steel from the standpoint of metallugical equilibrium. It is interesting to compare those values to the above calculated temperatures of the trailing part, given as 2300-2060°C for steel.
