THE EFFECT OF POURING TEMPERATURE ON GRAPHITIZATION OF CAST BARS PRODUCED BY IN-MOLD LOST FOAM PROCESS

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MAHDIFAR MOHSEN; DIVANDARI MEHDI

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Journal: FOUNDING RESEARCH JOURNAL Year:2017 | Volume:1 | Issue:1 Page(s): 23-35

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Title

THE EFFECT OF POURING TEMPERATURE ON GRAPHITIZATION OF CAST BARS PRODUCED BY IN-MOLD LOST FOAM PROCESS

Author(s)

MAHDIFAR MOHSEN | DIVANDARI MEHDI | Issue Writer Certificate

Keywords

NODULAR GRAPHITE CAST IRON

IN-MOLD LOST FOAM PROCESS

POURING TEMPERATURE

GRAPHITE DISTRIBUTION

POLYSTYRENE FOAM

Abstract

In this study the graphitization characteristics were studied in the test bars produced by the in-mold lost foam (IMLF) process. Polystyrene patterns were prepared, and the test bars were produced in three different diameters. In this paper, only the microstructure of the test bars, having 10 mm diameter and 200 mm height, cast at two temperatures of 1410 and 1440oC, and 1 wt% of spheroidizing material (FeSiMg), have been investigated. For this purpose, 10 mm bars were cut from two sections, the middle and the end part (the furthest distance from the gate) and then, these sections were examined using optical microscope. The results show that, the melt temperature and fluid flow affect the graphite morphology as well as the distribution, shape, size and type of graphite. In the central part of the test bar, cast at 1410oC, non-spheroidal graphite is formed which are different from other areas, but at 1440oC, the graphite in the whole section is uniform and spherical, from the center to edge. The high nodule count (above 700 pcs. per unit surface) and above 80 percent nodularity, in both cases, are worth mentioning.

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APA: Copy

MAHDIFAR, MOHSEN, & DIVANDARI, MEHDI. (2017). THE EFFECT OF POURING TEMPERATURE ON GRAPHITIZATION OF CAST BARS PRODUCED BY IN-MOLD LOST FOAM PROCESS. FOUNDING RESEARCH JOURNAL, 1(1 ), 23-35. SID. https://sid.ir/paper/265643/en

Vancouver: Copy

MAHDIFAR MOHSEN, DIVANDARI MEHDI. THE EFFECT OF POURING TEMPERATURE ON GRAPHITIZATION OF CAST BARS PRODUCED BY IN-MOLD LOST FOAM PROCESS. FOUNDING RESEARCH JOURNAL[Internet]. 2017;1(1 ):23-35. Available from: https://sid.ir/paper/265643/en

IEEE: Copy

MOHSEN MAHDIFAR, and MEHDI DIVANDARI, “THE EFFECT OF POURING TEMPERATURE ON GRAPHITIZATION OF CAST BARS PRODUCED BY IN-MOLD LOST FOAM PROCESS,” FOUNDING RESEARCH JOURNAL, vol. 1, no. 1 , pp. 23–35, 2017, [Online]. Available: https://sid.ir/paper/265643/en

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