CD Skripsi

Pengaruh Variasi Sudut Elektroda Dan Arus Polaritas Lurus Terhadap Hasil Pengelasan Smaw (Shielded Metal Arc Welding)

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The use of electric arc welding techniques with wrapped electrodes (SMAW) in joining rods in steel building construction and machinery involves several parameters that influence the welding results. These parameters include electric current and polarity, welding speed, penetration, as well as other standard conditions such as electrode diameter and type. Various electrode angles, current strengths, and unidirectional polarities. Varying electrode angles between 45°, 60°, 75°, and 90°, as well as varying currents such as 90 A, 100 A, and 120 A. The specimen material used is low carbon steel. The test methods used are visual, penetrant (Non Destructive Test), and metallographic (Destructive Test). The research results showed that almost all specimens had weld defects. Specimen H1 with an electrode angle of 90º and a current strength of 100A shows optimal welding. Specimen E2 with a welding angle of 45° and a current of 100 A has a defect percentage of 6.9%, specimen H1 with a welding angle of 90° and a current of 100 A has a defect percentage of 7.9%, specimen J1 with a welding angle of 60° and a current of 120 A has a defect percentage of 8.13% , and specimen L2 with a welding angle of 90° and a current of 120 A has a defect percentage of 10%. In this specimen, there are ferrite and pearlite structures in the BM, HAZ, and WM. Optical microscope observations show that the pearlite structure in the HAZ area dominates more than in the BM area. It can be concluded that the greater the current strength and seam angle, the more ferrite structures are formed.

Keywords: Current, Electrode Angle, Welding Speed,

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1907111296

Penerbit

Pekanbaru : Universitas Riau - F. Teknik - Teknik Mesin., 2024

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1907111296

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK MESIN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Vina

Versi lain/terkait

Lampiran Berkas

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