1. Study of drop motion in the mild steel-argon arc welding system
- Author
-
v. Caron
- Subjects
Argon ,Terminal velocity ,business.industry ,Drop (liquid) ,Molten metal ,Metals and Alloys ,chemistry.chemical_element ,Drag equation ,Mechanics ,Industrial and Manufacturing Engineering ,law.invention ,Optics ,chemistry ,Drag ,law ,Weld pool ,Arc welding ,business - Abstract
High-speed cinephotography was used to investigate the mechanical characteristics of the free translational motion of molten metal drops as it occurs within the column of a mild steel-argon arc. The drops were found to undergo considerable acceleration across the arc gap before reaching a terminal velocity at the weld pool. The current intensity had a controlling effect on both quantities. The experimental results are analyzed on the basis of the existing drag theory whereby the high-velocity plasma jet exerts an entraining force on the metal drops. Reasonable correlation is obtained between the experimental values and the drag equation as adapted from hydromechanics. Resume Les caracteristiques mecaniques du mouvement libre de translation des gouttes de metal liquide tel qu'il se produit dans un arc avec de l'acier doux sous argon, a ete etudie par cinematographie rapide. Les goutellettes subissent une acceleration considerable dans l'intervalle de l'arc avant d'atteindre une vitesse limite dans...
- Published
- 1970