ANALISIS KEKUATAN TARIK DAN KEKERASAN SAMBUNGAN LAS PADA PIPA ASTM A53 GRADE A

PRATAMA, MUHAMMAD BAGUS HERRU and Chandra, Hendri (2024) ANALISIS KEKUATAN TARIK DAN KEKERASAN SAMBUNGAN LAS PADA PIPA ASTM A53 GRADE A. Undergraduate thesis, Sriwijaya University.

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Abstract

Welding is one of the primary manufacturing techniques in various industrial applications. This research aims to explore the relationship between current strength variations and tensile strength as well as hardness in SMAW welding of ASTM A53 using E6010 electrode as root and E7018 as filler and capping. In the welded metal and HAZ of ASTM A53, the presence of bainite and pearlite phases was observed formed due to varying cooling rates in each part. The ferrite phase appears white, while pearlite appears black. Tensile test results show that the highest value is obtained at 100 Amperes current usage at 437.72 N/mm2, while the lowest value occurs at 80 Amperes current at 396.66 N/mm². The highest metal hardness is found at 100 Amperes current with a value of 274.67 HVN, while the lowest at 80 Amperes current at 144.69 HVN. Heat influence on the cooling rate impacts the change in microstructure. Higher current yields better weld joints compared to lower current. Microscopic testing shows variations in the shape and number of grains in the welded metal microstructure depending on the current level used.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	SMAW, perlite,bainit, ASTM A53, E6010, E7018
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Muhammad Bagus Herru Pratama
Date Deposited:	24 Jun 2024 02:02
Last Modified:	24 Jun 2024 02:02
URI:	http://repository.unsri.ac.id/id/eprint/147569

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