Zusatzstoff für die Herstellung von Umhüllungsmassen für Pressmantel-Schweisselektroden

摘要

Ferrosilicon, for use in a sheathing mass for an extruded welding electrode, contains 40-80% of silicon, has a finely divided round form with a smooth surface and has 25-50% of the particles with a grain size of less than 0.06 mm. The particles may be obtained by atomization or granulation from a melt using steam, air, water, carbon dioxide or nitrogen, or ground particles may be passed through a flame zone to form a melted rounded product. An example of a flux coating described is .CaF2.3 parts .CaCO3.3 parts .FeSi+FeMn.1 part .Fe.2 parts .Binder.1 part