OPTIMALISASI WAKTU GESEK TERHADAP SIFAT MEKANIS DAN STRUKTUR MIKRO SAMBUNGAN LAS METODE FRICTION WELDING BAHAN SILINDER PEJAL STAINLESS STEEL 403

Ragatantra, Ragatantra and -, Ir. Bibit Sugito, M.T. (2021) OPTIMALISASI WAKTU GESEK TERHADAP SIFAT MEKANIS DAN STRUKTUR MIKRO SAMBUNGAN LAS METODE FRICTION WELDING BAHAN SILINDER PEJAL STAINLESS STEEL 403. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

At this time welding techniques have been widely used in machine construction. This is because machines are made with simpler connection techniques. Welding is usually used for repair, making a hard coating on tools, thickening worn parts, joining two materials or shafts, and so on. Welding must consider the suitability between the type of material to be joined and the method used in the welding process, so that the result of the weld has a good joint strength. The purpose of this study was to determine how much tensile strength, hardness value starting from the main metal to the joints, and microstructure using the friction welding method. In this study, the material used is Stainless Steel 403. The welding process is carried out by varying the friction time of 4 seconds, 6 seconds, and 8 seconds. Friction is carried out by means of a 1450 rpm friction welding machine. The tests carried out are tensile strength testing, microstructure testing, and vickers hardness testing. The results of the test show that the tensile strength of the friction welding results increases with increasing friction time, the highest maximum stress at 8 seconds of welding has a stress value of 215.85 N / mm². The fracture section results on all stainless steel joints are dominated by ductile fractures. The hardness test explains that of the three variations of the friction time, the highest hardness value is located around the joint (weld line) at a friction time of 8 seconds of 280.24 VHN compared to the haz areas and the parent metal. Finally, the microstructure with a magnification of 500x showed that both the weld area, the heat affected area, and the base metal were dominated by ferrite and pearlite structures.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	Stainless steel 403, Friction welding, Waktu gesek, Kekuatan tarik, Struktur mikro, Kekerasan Vickers
Subjects:	T Technology > TS Manufactures
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	RAGATANTRA
Date Deposited:	23 Mar 2021 03:54
Last Modified:	23 Mar 2021 03:54
URI:	http://eprints.ums.ac.id/id/eprint/90098

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