PRODUCTION OF NODULAR CAST IRON BY INJECTION OF MAGNESIUM POWDER
Research Paper Submitted to
First Metallurgical Conference
Cairo 12-15 June 1971
By
MORSY I.M., KHALIL S.E. And VISHKARIEV A.P.
EL-TABBIN METALLURGICAL INSTITUTE FOR HIGHER STUDIES
SUMMARY
Factors influencing the production of nodular graphite cast iron in Cairo Foundries of El-Nasr Casting Company were investigated. The applied technique was the injection process, which was done by introducing pure magnesium powder into the melt through a graphite tube using nitrogen as a carrier gas.
Due to the high sulfur content of the produced cast iron during the period of investigation, some trials for desulphurization were carried out, prior to treatment with magnesium. It was shown that better desulphurization can be obtained by increasing the blast temperature of the cupola, or by ladle treatment. The addition of flurospar or increased amount of line stone in cupola charge did not give a sizable effect.
The injection of 4 kg of magnesium powder per one ton of cast iron gave a 100% spheroidal graphite cast iron. The recovery of magnesium that has been obtained was found 27.5% irrespective to the high sulfur content in the base cast iron to be treated.
At the present time it is easier to obtain nodular cast iron as the sulfur content is low.
Survey on the Methods of Nodular Cast Iron Production
Study submitted in the Symposium on Foundry Technology
Cairo December 1972
By
S.E. KHALIL— I.M MORSY —M.K HUSSEIN
The high consumption of Ingot Molds and the cracking of Cast Iron Pipes urge the Egyptian foundries to produce them from nodular cast iron. Ingot Molds made from this cast iron lasts 2:2.5 longer than that of gray cast iron (Ref. 1).
Human Performance Improvement for you 