The Initial Assessment of Effectiveness of the Impulse Method of Introducing an Inoculant into Cast Iron

Abstract

An initial assessment of the effectiveness of cast iron inoculation, performed by the method of impulse introducing the master alloy into cast iron, is presented. The experiment was concerned with the hypoeutectic gray cast iron inoculated with either the Alinoc or the Barinoc master alloy by means of an experimental device for pneumatic transportation. Examinations involved pneumatic injection of the powdered inoculant carried in a stream of gaseous medium (argon) into the metal bath held in the crucible of an induction furnace. It was found that the examined process is characterised by both high effectiveness and stability.

Experimental assessment of the gray cast iron production by inoculant injection

“…The injection efficiency depends mainly on the interaction (solid particle and conveying gas) with the liquid metal [16]. A. Derda and M. Soiński [17] added inoculants to hypo-eutectic gray cast iron by a pneumatic transportation device. They found high effectiveness and stability, based on the silicon composition changes after performing the inoculation through pneumatic injection of the powdered inoculant by argon as a carrier gas into the liquid.…”