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Nani dkk. Mulyaningsih
Jurusan Teknik Mesin, Program Studi Teknik Mesin, Universitas Tidar, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Journal : journal of welding technology

 1 
Identifikasi Cacat Sambungan Las SMAW Tipe Butt Joint Pada Material Baja SS400 Menggunakan Metode Liquid Penetrant Test Dan Ultrasonic Test Al Faiq, M Rauf; Hastuti, Sri; Hadi, Nur; Mulyaningsih, Nani
Journal of Welding Technology Vol 7, No 1 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v7i1.6930

Abstract

SMAW welding is a type of electric arc welding, where the electrode is melted by the heat generated from the electric arc between the electrode tip and the workpiece. The working principle of SMAW welding is to use heat from an electric arc to melt the base metal and the tip of the electrode coated with flux, which also functions as a filler material in the metal joining process. The purpose of this study is to determine the effect of variations in current strength and electrode type on the type of weld defects in SS400 steel material welding joints. In this study, weld defects identified from liquid penetrant testing showed six types of defects, namely crack, porosity, incomplete fusion, slag inclusion, over spatter, and undercut, while ultrasonic testing found four types of defects, namely crack, incomplete penetration, incomplete fusion, and slag inclusion. Liquid penetrant and ultrasonic testing data show that the welding process using currents of 120 A and 110 A with E7016 electrodes has the most defects, meanwhile, at a current of 100 A with E7018 electrodes, it is a welding parameter with weld results that are protected from welding defects. Based on the test data, it can be concluded that variations in current and electrode type affect the number and type of weld defects that appear, which are influenced by the welding process, the amount of current, the diameter and type of electrode, electrical polarity and penetration rate. These parameters in SMAW welding determine the efficiency and quality of metal joining results.
Analysis of weld defects and corrosion rates in SS304–SS400 dissimilar joints under various MIG welding positions Yoggo Bagus Pamungkas; Nani Mulyaningsih; Sri Hastuti; R.Faiz Listyanda
Journal of Welding Technology Vol 8, No 1 (2026): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v8i1.8788

Abstract

The combination of SS304 stainless steel and SS400 low-carbon steel is widely used in the automotive and construction sectors because it combines weldability with good corrosion resistance. However, the differences in the physical and mechanical properties of these two materials have the potential to affect the quality of the welded joint, especially when considering variations in welding position. This study aims to analyze the effect of 1G, 2G, and 3G welding positions on welding defects and the corrosion rate of Metal Inert Gas (MIG) welded joints. The materials used were SS304 stainless steel plates and SS400 lowcarbon steel plates joined using a 60° V-groove. The welding process was performed using a current of 70 A as the primary parameter and ER309L electrode wire for all welding position variations. Welding defect testing was performed using the liquid penetrant method in accordance with ASTM E165 to detect surface defects, and corrosion rate testing was conducted using the electrochemical method in a NaCl solution, referencing ASTM G102 to determine the corrosion resistance of the welded joints. The test results showed that the 1G welding position produced the fewest welding defects compared to the 2G and 3G positions, and the 1G welding position yielded the lowest corrosion rate of 0.0789 mmpy, while the 2G and 3G positions showed corrosion rates of 0.1301 mmpy and 0.1699 mmpy, respectively. These values indicate that welded joints in the 1G position have better corrosion resistance compared to other positions. This difference is influenced by the stability of the weld pool, the effect of gravity, and the lower likelihood of weld defects in the 1G position. Thus, the welding position plays a crucial role in determining the quality and corrosion resistance of MIG weld joints in dissimilar materials, specifically SS304 stainless steel and carbon steel. SS400 low-carbon steel.
Co-Authors Abdul Rahman Wahid Adityo Noor S. Darmo Adityo Noor Setyo Hadi Darmo Agung Purnomo Ahmad Subri Arizal Al Faiq, M Rauf Ari Wicaksono Arief Prasetyo Arif Rahman Saleh Auliadi, Diwa Lingga Ayub Adi Darmawan Aziz , Syahrul Fatchul Bagas Tri Bagas Tri Suryanto Budiono, Herru Santosa Cahya Ramadani, Pradipta Ihza Catur Pramono Choirul, Choirul Dimas Surya Fadli Faisal Arif Riza Majid Fajar Paundra Fendy Kussuma Hadi Sufyan Fuad Hilmy Gilang Fitra Sanubari Gyani Ubaydillah Hadyan Hadyan Hanafi Izzul Hanafi Izzul Kurniawan Hanung Hermawan Hasan Zuhdi Hasugian, Panca Putra Hidayat, Ilyas Huda, Dimas Nur Amirul Ida Ayu Putu Sri Widnyani Iftitah, Siti Nurul Imam Agus Wahyudi Isro Nurul Hadi Kafi Yusuf Kafi Khusna, Kunti Nafingatul Kun Suharno Kun Suharno Kusnadi, Khoirur rojikin Listyanda, R. Faiz M. Fendy Kussuma Hadi Sufyan M. Yogi Riyantama Isjoni Martha Arum Nugraheni Mudabbirul Hakim Mufti Syafi’i Muhammad Abiyyu Raafi Muhammad Adrian Rizky Muhammad Noor Faishal Zakiy Muktivani Swastiko nur afiyan Nur Hadi Nur Kholis Nur Subkhan Nurhadi Nurhadi Prakoso, Aditya Win R.Faiz Listyanda Rachman Satya Pamungkas Rahayu, Yunita Ramadhani, Wahyuchandra Ranny Puspita Dewi Rio Candra Hermawan Rizal Catur Prasetyo Rizal Rizal Akbar Mantofani Ryan Try Prasetyo Safitra, Mohamad Nanda Salim, M. Faiz Salim, Muhammad Faiz Setya Drana Harry Putra Setyo H. D, Adityo Noor Sigit Mujiarto Sri Hastuti Sri Widodo Sri Widodo Tardho Hakim Taufik, Ikhwan Tegar Armanto Tobing, Rudy P. Trisma Jaya Saputra Wahyuchandra Ramadhani Xander Salahudin Yanuar, Mochamad Riyanto Yoggo Bagus Pamungkas Yudhistira, Dida Ardito Yulianto, Dany Dwi Yusuf Nuruk Nuruk Zaki Aufa Fahrezi Zuhaeri, Nofal