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All Journal Rekayasa Mesin QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Jurnal Teknologi Maritim
M. Thoriq Wahyudi
Jurusan Teknik Permesinan Kapal Politeknik Perkapalan Negeri Surabaya
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences Other

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Analisis Kekerasan Pada Pipa Yang Dibengkokan Akibat Pemanasan Sidi, Pranowo; Wahyudi, M. Thoriq
Rekayasa Mesin Vol 3, No 3 (2012)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (398.375 KB)

Abstract

Pipe bending process needs special attention because it makes different mechanical properties. Increasing hardness cause materials brittle. The purpose of this study was to analyze the distribution of force on the part of the pipe as a result of the heating curves and 8000C 6700c with bending angle 900 and 1800. SA 335 is a pipe specimen with the size of outside diameter 44.5 mm and a thickness of 8 mm. At first, the two pipes is heated to the temperature 6700c and 2 other pipes that are heated to 8000C temperature, then 2 pipes bended at each heating temperature 900 and 1800. After that cut pipes to grab third in replication in each condition 4 pipe. From the test results found that the bending angle effect on hardness values. The greater the bending angle, the higher the hardness value.Keywords: bending, hardness, pipe, heating.
Peningkatan Kesadaran Masyarakat Terhadap Keselamatan dan Kesehatan Kerja (K3) di Bidang Pengelasan: Studi Kasus pada Proyek Pariwisata Desa Bachtiar; Widodo, Eriek Wahyu Restu; Prastyawan, Rikat Eka; Mukhlis; Wahyudi, M. Thoriq; Ari, Muhamad; Munir, Moh. Miftachul; Kusminah, Imah Luluk; Andiana, Rocky; Augustino, Immanuel Freddy; Andika, Yudi; Sa'diyah, Rahmatus; Habibi, Tsaaqif Haani
Qardhul Hasan: Media Pengabdian kepada Masyarakat Vol. 11 No. 2 (2025): Qardhul Hasan: Media Pengabdian kepada Masyarakat
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/qh.v11i2.20927

Abstract

Meningkatkan pemahaman tentang Keselamatan dan Kesehatan Kerja (K3) sangat krusial, terutama bagi pekerja yang terlibat dalam lingkungan kerja berisiko tinggi seperti proses pengelasan. Risiko kecelakaan di sektor ini tidak hanya berpotensi merusak material, tetapi juga dapat menyebabkan cedera serius hingga mengancam nyawa. Salah satu tantangan utama yang dihadapi oleh mitra dalam kegiatan pengabdian masyarakat ini adalah rendahnya tingkat kesadaran dan pengetahuan terkait keselamatan kerja, khususnya dalam bidang pengelasan. Untuk itu, pelatihan mengenai pengenalan dan penerapan K3 perlu dilakukan secara terstruktur guna membentuk tenaga kerja yang sehat, aman, dan profesional. Program pelatihan ini menyasar warga Desa Balun dan dilaksanakan melalui beberapa tahapan, mulai dari persiapan, pelaksanaan, hingga evaluasi. Materi yang disampaikan mencakup prinsip dasar K3 dalam pekerjaan pengelasan dan praktik penggunaan alat pelindung diri. Seluruh proses dipersiapkan dengan matang agar pelatihan berjalan efektif. Harapannya, kegiatan ini dapat meningkatkan kesadaran masyarakat terhadap pentingnya keselamatan kerja, mengurangi potensi kecelakaan, dan menciptakan lingkungan kerja yang lebih aman dan produktif di sektor pengelasan.
Analisis Variasi Jenis Elektroda Buffer Layer Pada Proses Hardfacing Material ASTM A216 WCB Terhadap Uji Visual, Uji Penetran Dan Makro Toto, Alvalo; Al Amin, Mochammad Karim; Wahyudi, M. Thoriq; Budi Kurniyanto, Hendri; Amri, Moh. Syaiful; Firmansyah, Moch. Aria; Leonard, Rikky
Jurnal Teknologi Maritim Vol. 9 No. 1 (2026): Jurnal Teknologi Maritim (In Press)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/jtm.v9i1.76

Abstract

ASTM A216 WCB is a cast carbon steel material commonly used in valve components due to its good mechanical properties and resistance to high temperatures. One of the major issues encountered in its application is surface wear. To enhance surface hardness and wear resistance, a hardfacing process was conducted using the GTAW welding method. This involved the application of buffer layers using ER308 and ER309 filler metals, followed by hardfacing layers of Stellite 12. A total of four specimens were prepared with varying combinations of buffer and hardfacing layer numbers. The visual inspection results indicated the absence of surface defects in all specimens, demonstrating good welding quality. Dye penetrant testing revealed a non-relevant indication on specimen 3 with a size of 1.3 mm, which remains within the acceptable limits as per ASME Section IX standards. Macroscopic examination showed sound fusion between layers, free from defects such as porosity or cracks. The deepest weld penetration was observed in specimen 4, which used the ER309 buffer layer, achieving a depth of 1.5 mm. Overall, the use of ER308 and ER309 buffer layers significantly influenced the quality of the hardfacing welds, contributing to the formation of homogeneous and defect-free layers. This study provides valuable insight into material selection and welding parameters to improve wear resistance in ASTM A216 WCB-based valve components within industrial environments.
Co-Authors Andiana, Rocky Augustino, Immanuel Freddy Bachtiar Budi Kurniyanto, Hendri Eriek Wahyu Restu Widodo Firmansyah, Moch. Aria Habibi, Tsaaqif Haani Kusminah, Imah Luluk Leonard, Rikky Mochammad Karim Al Amin Moh. Syaiful Amri Muhamad Ari Mukhlis Munir, Moh. Miftachul Pranowo Sidi Prastyawan, Rikat Eka Sa'diyah, Rahmatus Toto, Alvalo Yudi Andika