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Assessment of the influence of magnesium content on the shape and amount of graphite precipitation in spheroidal cast iron manufactured by Metal-Odlew s.c.

Orłowicz W., Tupaj M., Mróz M., Guzik E., Nykiel J., Zając A., Piotrowski S.

Archives of Foundry Engineering

2009

Vol. 9, iss. 1

117-120

The study presents the influence of time on cast iron spheroidisation, modification of the magnesium content in the alloy, and the influence of the magnesium content on the shape and number of graphite precipitations. For one particular set of production conditions, it was observed that 17 minutes after completing the modification and spheroidisation procedure, the magnesium content had decreased from 0.070% to 0.040%. This resulted in a decrease in the graphite precipitation shape index Ss from 0.081 to 0.067, as well as a decrease in the average number of graphite precipitations NA from 568 mm-2 to 305 mm-2.