Pengaruh Temperatur Tuang dan Jumlah Saluran Turun terhadap Sifat Fisis dan Mekanis Coran Besi Cor Nodular

, Sarno and , Ir. Masyrukan, MT (2017) Pengaruh Temperatur Tuang dan Jumlah Saluran Turun terhadap Sifat Fisis dan Mekanis Coran Besi Cor Nodular. Diploma thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The purpose of this research is to know the result of nodular cast iron specimen test on chemical composition, microstructure, hardness, tensile and impact test for 1542  C (drop down 2,3 and 4), 1554C down 2.3 and 4 pcs), and pour temperature 1568C (channel down 2.3 and 4 pieces). The material under study is a nodular cast iron specimen. Variations of specimens include: specimen A = casting temperature 1542C (channel down 2,3 and 4 pieces), specimen B = casting temperature 1554C (channel down 2,3 and 4 pieces), and specimen C = pour temperature 1568 C (channel down 2.3 and 4 pieces). Tests performed: chemical composition test (Spectrometer-ASTM E 415), microstructure test (Olympus Metallurgical Microscope and Olympus Photomicrographic System-ASTM E 7), hardness test (Macrohardness Vickers Tester-ASTM E 92) tensile test (Universal servohydraulic-servopulser-ASTM E 8M test device) and impact test (Charpy Impact Tester-ASTM E 32). From the results of testing the chemical composition can be known that the specimens used are nodular cast iron (round graphite). With the chemical composition of the main elements: iron (Fe) = 92.54%; carbon (C) = 3.7727%, silicon (Si) = 3.0761% and Manganese (Mn) = 0.3663%. From the observation of microstructure on each specimen temperature 1542 C, 1554 C and 1568 C obtained graphite phase, perlite and ferrite. From the hardness test, the average hardness of consecutive samples of 1542 ° C was highest on 2 drops (271,3 VHN), 4 drops (253,9 VHN) and 3 channels down (240,1 VHN ). Temperatures of 1554 C were found to be the highest successive mean hardness in 2 downhill lines (265.9 VHN), 4 dropped channels (256.1 VHN) and the lowest of 3 drops (253.9 VHN). Temperature 1568 C obtained the highest successive average hardness on 2 down channels (270,6 VHN). The following channels dropped 4 pieces (253.9 VHN) and the lowest on 3 down channels (231.9 VHN). The highest tensile strength to the lowest for all successive pour temperatures is found in 2 downlets, 4 pieces and 3 pieces. The highest impact price to the lowest occurred at higher casting temperature to lower consecutive temperature obtained in the channel down 4 pieces, 2 pieces and 3 pieces.

Item Type:	Karya ilmiah (Diploma)
Uncontrolled Keywords:	nodular cast iron, cast temperature, descending channel
Subjects:	T Technology > T Technology (General)
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	SARNO
Date Deposited:	13 Nov 2017 07:03
Last Modified:	13 Nov 2017 07:03
URI:	http://eprints.ums.ac.id/id/eprint/57587

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