Pengaruh Variasi Arus Listrik pada Las Welding Process SMAW pada Material SS-304 dengan menggunakan Metode Pendeteksian Cacat Las Radiography Test dan Ultrasonic Test

Abstract

This study was conducted to determine how the variation of welding current using the SMAW welding method with a current strength of 90A, 110A, 120A using the Radiography Test and Ultrasonic Test testing methods as a detection of welding defects in SS 304 material. This research method uses experimental methods, and the data taken is secondary data, namely the results of Non-destructive testing on SS 304 material using Radiography and Ultrasonic test methods. The results of the research from the welding results, radiography tests and ultrasonic tests in the study are the variation of electric current with a current strength of 90A, 110A, 120A on the visual results of welding on SS 304 material looks good with the Weld Metal area that is raised and wavy. It looks good root penetration and the amount of welding (root weld) through and the size of the welding is 1.5 mm, 1 mm, and 2 mm. In accordance with the provisions of the ASME SECTION IX standard that acceptance criteria root penetration 1-3 mm.