METHOD OF APPLYING FLUX

摘要

A method for introducing fluxing material (flux) into a tubular, centrifugal casting mold in the manufacture of centrifugally cast metallic tubes. The flux is injected directly into the pouring stream of the molten metal in a steady, continuous flow by the pressure from a stream of non-reactive gas such as nitrogen. The injection of the flux into the pouring stream begins only after the wetting of all the casting surfaces of the mold by the molten metal. This flux is supplied from a hopper with a variable speed control auger.