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Journal : Journal of Applied Sciences, Management and Engineering Technology (JASMET)

THE EFFECT OF WELDING CURRENT ON AISI 1045 STRENGTH AND CORROSION RATE Wardani, Iftika Philo; Setyowati, Vuri Ayu; Suheni, Suheni; Samudra, Ilham Prajala
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 2 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i2.1159

Abstract

Shielded Metal Arc Welding (SMAW) was widely used in industry for joining AISI 1045 steel because this method was simple, in-expensive, and the device is portable. This researched aimed to analyze the effect of variations in welding current towards material strength and corrosion rate of AISI 1045. Welding current that been used as variations in this study are 100, 110, and 120 Ampere. This research was conducted using tensile test on the weld area and immersion around the weld area in NaCl solution with 0.4% concentration. From the research that conducted, it is known that increasing in welding current made the yield strength, tensile strength, and fracture strength of material also increased. This phenomenon also happened for elongation of material in weld area. With increasing the welding current then the elongation of material also increasing. Another aspect that researched in this paper is the effect of welding current toward corrosion rate of material. From the result, it was known that increasing welding current made corrosion rate of material became faster.
Effect of Welding Current and Electrode Movement on HAZ Width and Hardness of TIG Welded 304 Stainless Steel Herdianto, Albertus Nova Tomy; Suheni, Suheni; Rosidah, Afira Ainur
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 1 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2024.v5i1.5884

Abstract

Tungsten Inert Gas (TIG) welding is a welding technique using an electric arc between a non-consumable tungsten electrode and a shielding gas for the heat formation. This research aims to determine the comparison of the macro structure and hardness (Vickers) of 304 stainless steel in TIG welding with spiral, zig-zag and triangular electrode movements, as well as the welding current variatons of 60, 80, and 100 A. The results show that the welding current and movement affect the hardness and HAZ width of the welded 304 stainless steel using TIG welding process. The greater current leads to higher HAZ width and hardness. Furthermore, the spiral movement provides higher hardness due to its fast movement in welding which leads a faster cooling as well. The highest HAZ width reaches the value of 2.05 mm using the 100 A welding current and triangle movement. Meanwhile, the highest hardness is obtained in the value of 450.5 kgf/mm2 in the same current and movement.