Pengaruh Lapisan Karbon Terhadap Distribusi Kekerasan Pada Proses Solidifikasi Besi Cor Kelabu Dengan Pendinginan Oli Pada Cetakan Permanen

Rosid, Mochamad and , Agus Yulianto, ST, MT (2020) Pengaruh Lapisan Karbon Terhadap Distribusi Kekerasan Pada Proses Solidifikasi Besi Cor Kelabu Dengan Pendinginan Oli Pada Cetakan Permanen. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

This study aims to determine the effect of the carbon coating on the solidification of gray cast iron in a permanent mold. This study uses a permanent mold cast iron ductile (FCD). Freezing of gray cast iron is observed with CE meter and once hardened will experience some testing, among others: hardness test, metallographic test, chemical composition test. This study uses a gray cast iron material. From gray cast iron material will be determined 16 test points to determine the physical and mechanical properties. Testing of chemical composition using JIS standard. The test results showed the effect of the carbon coating on the solidification of gray cast iron on a permanent mold produces a diverse distribution of hardness and hardness values obtained as follows: In part A, the part in direct contact with the molding side of = 200,91HV, 250,9HV, 205, 52HV, 158,63HV, 147,29HV, B part in direct contact with the molding of the bottom of = 147,29HV, 236,02HV, 189,22HV, 202,39HV, 145,58HV, C the center of the specimen which had been cleaved by = 145,58HV, 172,27HV 181,46HV, 221,09HV, 189,62HV, and D sections are in direct contact with the free air of = 189,62HV, 165,12HV, 219,04HV, 200,15HV, 200,91HV. In the smelting test results obtained using the CE Meter 1356.8 ° C temperature during tapping early in the cast in the mold at the start on the chart that reads CE Meter decrease the temperature, the liquid temperature of 1155.4 ° C shape is still liquid to a temperature of 1060 ° solid C thus obtained value CEL = 4.17%; C = 3.61%; and SI = 2.21% where the metal solid starts but is still red up to a temperature of 1060 ° C where iron has been frozen. On the results of the chemical composition there are 20 chemical elements and observation of micro structure was found graphite and cementite. From these results it can be seen that the material formed is gray cast iron FC 150 and JIS standards.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	solidification, ce meter, hardness, chemical composition, cast iron fc 150.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	MOCHAMAD ROSID
Date Deposited:	09 Nov 2020 11:48
Last Modified:	09 Nov 2020 11:48
URI:	http://eprints.ums.ac.id/id/eprint/86963

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