1986 Volume 4 Issue 4 Pages 673-677
A mathematical model of the weld pool, where the heat input from arc is situated on the molten pool surface, has been developed to discuss the influence of weld pool configuration on the heat flow in arc welding.
The numerical model, based on the heat flow equation in the quasi-stationary state and the surface tensional balance equation for the molten pool, makes it possible to assess the effect of process parameters such as arc pressure and wire deposition rate on the weld penetration.
In the first part of this paper, the finite difference molten pool models have been proposed and the numerical method has been discussed.
In the second part of this paper, the effect of thermal property of material on the weld pool shape has been discussed and the influence of weld pool configuration on the penetration has been made clear.