Experimental Study of the Effect of Preheating Process on Welded Joints of ASTM A36 Material on Mechanical Characteristics: Evaluation of Tensile, Bending, and Macrostructure
Abstract
In the oil and gas industry, welding errors frequently necessitate replating. Preheating is a heat treatment method used to minimize temperature gradients between the weld area and its surroundings, thereby reducing the risk of weld defects. This study employs an experimental approach to evaluate the effect of preheating during rewelding and to assess the resulting mechanical properties of the weld metal. The experiment involved two rewelding cycles with preheating. The minimum preheating temperature was set at 50 ºC, and the minimum interpass temperature at 240 ºC. Shielded Metal Arc Welding (SMAW) was used to weld ASTM A36 carbon steel. The experimental procedures included tensile testing, bending testing, and macrostructural analysis. Welding was performed on A36 steel using E7016 and E7018 filler materials, with a current of 94.1 A and a groove configuration featuring a 30º bevel angle. The findings of this research can inform the development or revision of procedure qualification records (PQR) to meet industry quality and safety standards.
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Setiyo Kuncoro, P., Anggono, I. A. D., & Aklis, I. N., 2025. Tegangan sisa pada komponen las baja berkekuatan tinggi (HSS) dengan kombinasi pemanasan awal (preheating) dan perlakuan panas pasca pengelasan (PWHT). Universitas Muhammadiyah Surakarta.
Ardi, A., Asri, M. H., & Mardin, M., 2024. Analisis pengaruh variasi bentuk sambungan terhadap karakteristik mekanis baja karbon rendah hasil pengelasan SMAW dan GTAW. Innovative: Journal Of Social Science Research, Vol. 4, No. 1, pp. 12201-12219.
Muthia, H. M., Nugraha, I. G., & Hanafi, D. R., 2023. Pengaruh jenis elektroda las SMAW terhadap sifat mekanik dan struktur mikro. J. Pendidik. Tek. Mesin Undiksha, Vol. 11, No. 1, pp. 93-110.
å²¡æˆ¸é †ä¸€, 艾斌, 巴山玉蓮, 櫻井尚å, 藤原佳典, & 星旦二, 2003. 主観的å¥åº·æ„Ÿã‚’ä¸å¿ƒã¨ã—ãŸåœ¨å®…高齢者ã«ãŠã‘ã‚‹å¥åº·é–¢é€£æŒ‡æ¨™ã«é–¢ã™ã‚‹å…±åˆ†æ•£æ§‹é€ 分æž. ç·åˆéƒ½å¸‚ç ”ç©¶, Vol. 81, pp. 19-30.
Rifaldi, A., Ryadin, A. U., & Hakim, A. R., 2021. Pengaruh suhu preheating terhadap kekuatan tarik dan kekerasan pelat baja ASTM A36 pada pengelasan shielded metal arc welding (SMAW). Sigma Teknika, Vol. 4, No. 1, pp. 81-90.
Koesgi, D. P.& Wicaksono, D., 2021. Pengaruh pemanasan awal terhadap sifat mekanik sambungan spot friction stir welding dalam pemasangan rivet alumunium 2024. Teknika STTKD: Jurnal Teknik, Elektronik, Engine, Vol. 7, No. 1, pp. 140-153.
LAS SMAW, T. M.& NUGRAHA, M. R. Pengaruh pre-heat pada pengelasan dissimilar antara baja karbon rendah dan.
Firmansyah, A. A., 2023. Pengaruh variasi temperature pre-heat terhadap kekerasan rockwel dan struktur mikro pada pengelasan SMAW baja SS400.
Sudirman, S., 2023. Pengaruh preheat terhadap kekuatan tarik, kekerasan dan NDT pada pengelasan SMAW posisi 3G menggunakan material API 2W grade 50 untuk pembuatan topside platform. Institut Teknologi Sepuluh Nopember.
Nuraliansyah, E., 2022. Pengaruh proses preheat dan postheat pada pengelasan gas metal arc welding (GMAW) baja AISI 1045. Gorontalo Journal of Infrastructure and Science Engineering, Vol. 5, No. 2, pp. 59-72.
Irfansyah, R. A., 2022. Analisis pengaruh variasi preheating temperature pada hasil pengelasan baja ASTM A36 di atas permukaan air dengan proses SMAW terhadap weld defect, kekerasan, dan kekuatan tarik. Institut Teknologi Sepuluh Nopember.
Siregar, J. F., Ariyanto, N. P., & Irawan, B. H., 2023. Destructive test material SA516 70n untuk kualifikasi pengelasan standar ASME bpvc sec. Ix-2021. Jurnal Teknik Mesin, Vol. 16, No. 2, pp. 133-138.
Rahman, G. F., Ariyanto, N. P., & Irawan, B. H., 2024. Pengujian rusak untuk procedure qualification record sambungan kombinasi las SMAW-FCAW pada material BS en 10025 S355J2 berdasarkan standar AWS d1. 1/d1. 1m: 2020. Jurnal Teknik Mesin, Vol. 17, No. 2, pp. 106-111.
Irawan, B. H., Saputra, I., & Ardiyansyah, M., 2024. Dampak nilai hardness berdasarkan parameter heat input pada proses pengelasan GTAW untuk material superduplex stainless steel S32750. Jurnal Teknik Mesin, Vol. 17, No. 2, pp. 133-138.
Irawan, B. H., Syahidah, B. B., & Gemala, M., 2025. Heat input calculation in GTAW welding to obtain values according to PWPS. Journal of Welding Technology, Vol. 7, No. 1.
DOI: http://dx.doi.org/10.30811/teknologi.v25i3.8322
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