SPHERODIZING OF MOLTEN CAST IRON FROM RISER CAVITY DURING MOULD FILLING

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MIRBAGHERI S.M.H.; HARSIJ H.

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Journal: JOURNAL OF SCHOOL OF ENGINEERING Year:2008 | Volume:20 | Issue:2 Page(s): 39-56

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Information Journal Paper

Title

SPHERODIZING OF MOLTEN CAST IRON FROM RISER CAVITY DURING MOULD FILLING

Author(s)

MIRBAGHERI S.M.H. | HARSIJ H. | Issue Writer Certificate

Keywords

CAST IRONQ3

INOCULATIONQ3

GRAPHITEQ3

SOLIDIFICATIONQ3

RISERQ2

FLAKEQ3

SPHERICALQ3

CASTINGQ3

TECHNIQUEQ1

Abstract

In this investigation a new procedure has been developed for producing of CAST IRON parts. The CAST IRON parts were produced as two layers during of SOLIDIFICATION. They had two zones, outer zone which was Grey Iron and inner zone which was Ductile Iron. At first, a complex cast part with a blind RISER was designed. Second, some inoculants were placed into the blind RISER on a wire screen for INOCULATION of melt. Finally, the micro structure from the outer skin toward the inner zone of the part was investigated by metallographic testing. Results showed that GRAPHITE’s in outer layers were from type of flack GRAPHITE, and the central zones were SPHERICAL GRAPHITE. In fact, at the first step of SOLIDIFICATION, outer skin is solidified as Grey Iron. Then due to contact melt and inoculants material concurrent with cavity shrinkage as well as back pressure into the RISER, a flow of inoculated melt move from the RISER toward mold cavity. This phenomenon lead to formation of SPHERICAL GRAPHITE’s at the central zones. This procedure is very economic fore CASTING industries, because in this TECHNIQUE the blind RISER has the role of a reaction cavity, instead of melt compensation.

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APA: Copy

MIRBAGHERI, S.M.H., & HARSIJ, H.. (2008). SPHERODIZING OF MOLTEN CAST IRON FROM RISER CAVITY DURING MOULD FILLING. JOURNAL OF SCHOOL OF ENGINEERING, 20(2), 39-56. SID. https://sid.ir/paper/22507/en

Vancouver: Copy

MIRBAGHERI S.M.H., HARSIJ H.. SPHERODIZING OF MOLTEN CAST IRON FROM RISER CAVITY DURING MOULD FILLING. JOURNAL OF SCHOOL OF ENGINEERING[Internet]. 2008;20(2):39-56. Available from: https://sid.ir/paper/22507/en

IEEE: Copy

S.M.H. MIRBAGHERI, and H. HARSIJ, “SPHERODIZING OF MOLTEN CAST IRON FROM RISER CAVITY DURING MOULD FILLING,” JOURNAL OF SCHOOL OF ENGINEERING, vol. 20, no. 2, pp. 39–56, 2008, [Online]. Available: https://sid.ir/paper/22507/en

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