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All Journal Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam JURNAL INTEGRASI Jurnal Teknologi dan Riset Terapan (JATRA) Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Jurnal Malikussaleh Mengabdi GeoEco
Cahyo Budi Nugroho
Politeknik Negeri Batam
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Journal : JURNAL INTEGRASI

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ALTERNATIF PENGGANTI PASTA ALUMINA SEBAGAI BAHAN POLISHER UNTUK METALOGRAFI Ari Wibowo; Hanifah Widiastuti; Nurman Pamungkas; Cahyo Budi Nugroho
JURNAL INTEGRASI Vol 12 No 2 (2020): Jurnal Integrasi - Oktober 2020
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/ji.v12i2.2022

Abstract

Polishing have played an important role in the preparation of metallography testing. Poor polishing produce in an unflat and rough surface of the material, resulting an unclear metallography image that is difficult to identified. In general, the material commonly used for polishing is alumina paste. Alumina paste is expensive and takes a few minutes to produce a smooth and flat surface. In this research, polishing was done by using several metal polisher other than alumina paste, these were magic***, auto***, bras**, ki*, menze*** and pri** which are sold cheaply at supermarkets or online stores. Analysis was carried out on the surface of the polishing by these materials and the etching surface. The test results showed that the material that is polished with magic *** has the smoothest surface or has the least residual scratches compared to other materials even compared to alumina paste, but has the disadvantage of corrosion forming on some parts of the surface. The best polishing time was obtained on polishing for 3 minutes
Studi Pembuatan Procedure Qualification Record untuk Repair through Thickness pada S355 KT0 Stefani, Windy; Leksonowati, Nur Fitria Pujo; Pamungkas, Nurman; Nugroho, Cahyo Budi
JURNAL INTEGRASI Vol. 16 No. 2 (2024): Jurnal Integrasi - Oktober 2024
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/ji.v16i2.8530

Abstract

This research aims to develop a Procedure Qualification Record (PQR) for Repair Through Thickness on S355 KT0 material using the GTAW method for the root, SAW for filler and capping. The welds were repaired using gouging and grinding before undergoing repair welding with the SMAW method. The study employed experimental methods with Non-Destructive and Destructive tests following AWS D1.1 and Client Specification MHK-COMP-SPE standards. The test results indicate defect-free welds that meet AWS D1.1 standards in terms of mechanical properties such as tensile strength, bending, impact, and hardness. The tensile strength values reached 609 MPa (longitudinal specimen) and 539 MPa and 540 MPa for transverse specimens. The lowest impact test value was 139J in the fusion line +2 mm repair to original welds area. The peak hardness test value was 240 VHN in the HAZ (repair to original weld) region. The test results were also used to formulate a PQR that aligns with specific requirements. This research is expected to provide guidance for performing repair welding on S355 KT0 material.
Co-Authors Abda Abda Abulija Maskarai Adhe Aryswan Adi Syahputra Purba Andy Parulian Siregar Annisa Fyona Ari Wibowo Ari Wibowo Ari Wibowo Asrafi Asrafi Aulia Fajrin Batubara, Ninda Hardina Budi Baharudin Budiman Budiman Butar, Hendra Butar Chandra Defta Rusdwinanto Didi Istardi Fajar Dwi Nuryanto Fajrin, Aulia Fedia Restu Ganesha Aryadi Gawan Sagoro Hanifah Widiastuti Hari Gunadi Hidayat Panuntun Ihsan Saputra Ikram Akrabi Krisman ' Lalu Giat Juangsa Putra Luksi Mangin Mega Gemala Meida Perwira Antartika Meilani Mandhalena Manurung Mohamad Alif Dzulfiqar Muhammad Ismail Muhammad Sufwandika Muhammad Syafei Gozali Muhammad Zainuddin Lubis Muslim Ansori Naufal Abdurrahman Prasetyo Nidia Yuniarsih Novebriantika Nugroho P Ariyanto Nugroho Pratomo Ariyanto Nugroho Pratomo Aryanto Nur Fitria Pujo Leksonowati Nurman Pamungkas Nurul Laili Arifin Rahmad Hidayat Rahman Hakim Randy Saputra Rapena Tandon Cahayanti Sidabutar Ridho Ravita Wardy Roza Puspita Ruzianto Ruzianto Sapto Wiratno Satoto Soni Widiawan Sriyanto Sriyanto Thomson Sagitario Simanjuntak Wenang Anurogo Windy Stefani Wissesa Wowo Rossbandrio Wowo Rossbandrio