Studi Struktur Mikro Dan Sifat Mekanik Sambungan Buttjoint Pada Material Baja Karbon Dengan Las Listrik

Utomo, Yusuf Budi and -, Joko Sedyono, ST, M.Eng, Ph.D (2019) Studi Struktur Mikro Dan Sifat Mekanik Sambungan Buttjoint Pada Material Baja Karbon Dengan Las Listrik. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

Definition of welding according to Deutche Inustrie Normon (DIN) is a metallurgical bond on a metal or alloy metal connection in a melted or liquid state. The use of welding techniques is very broad in steel building construction and machine construction. The extent of the use of welds is caused by the construction made with the technique of connecting these welds to be lighter, the manufacturing process is simpler so that the overall cost is cheaper compared to the connection in other ways. The purpose of this study was to determine the physical and mechanical properties of butt joint joints in carbon steel material with SMAW welding which is usually used in the community. Welding is carried out using different currents namely 65 Ampere, 80 Ampere and 95 Ampere with a diameter of 2.6 mm electrode. For 80 amperes the highest tensile strength is 48.43 kgf / mm². For the highest hardness value is found in the weld area with a current of 95 Ampere with a value of 177HVN. The higher the current, the greater the value of hardness, but each electrode also has a maximum limit of current usage. If it exceeds the limit it will be difficult when welding. From the results of micro photographs it is found that the greater the current value, the greater the size of the grain. Keywords: electric welding (SMAW), carbon steel, electrode, tensile test, micro photo, hardness test

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	Las Listik(SMAW), Baja Karbon, Elektroda, Uji Tarik, Foto Mikro, Uji Kekerasan
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	YUSUF BUDI UTOMO
Date Deposited:	16 May 2019 04:38
Last Modified:	16 May 2019 04:38
URI:	http://eprints.ums.ac.id/id/eprint/73029

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