Pengaruh Shielded Metal Arc Welding Terhadap Struktur Mikro Dan Kekerasan Besi Cor Nodular

Rohman, Muhmmad Fahrudin and , Agung Setyo Darmawan, ST. MT (2022) Pengaruh Shielded Metal Arc Welding Terhadap Struktur Mikro Dan Kekerasan Besi Cor Nodular. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

Nodular cast iron is gray cast iron with the addition of magnesium (Mg) or cerium (Ce) alloys to change the shape of the graphite flakes into round ones. This study aims to determine the effect of Shielded Metal Arc Welding on the microstructure and hardness of nodular cast iron. This research was conducted using the Shielded Metal Arc Welding method with a current of 75-90 V and the specimen was given a seam of 450 with 4 layers of workmanship. Hardness testing was carried out using the Vickers method, while metallographic testing was carried out using an optical microscope. The results of the metallographic test can be seen that the weld area produces graphite, ferrite and pearlite phases, then in the HAZ region is dominated by pearlite phase, while the base metal region consists of graphite, ferrite and pearlite phases. In the hardness test, the average hardness value in the weld area is 176.2 VHN. Then in the HAZ area the violence increased to 338.5 VHN. Meanwhile, the average hardness of the base metal is 303.7 VHN.

Item Type:	Thesis (Skripsi)
Uncontrolled Keywords:	Nodular cast iron, Shielded Metal Arc Welding, hardness, microstructure
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	MUHAMMAD FAHRUDIN ROHMAN
Date Deposited:	12 Aug 2022 03:08
Last Modified:	12 Aug 2022 03:08
URI:	http://eprints.ums.ac.id/id/eprint/103174

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