Detail Analysis of Welding Disabilities on Carbon Steel Pipes with SMAW Reviewed From Radiography Test Results (article of International Journal of Applied Engineering Research (IJAER) Volume 14, Number 15 2019 pp.3448-3454) Bibliografi Author: Gaol, Adhyaksa Lumban ; Sutanto, Hadi ; Basuki, Widodo Widjaja Topik: Welding Defect; Pipe Welding; Pipeline; Radiography test; JABFUNG Bahasa: (EN )     Penerbit: Research India Publications     Tempat Terbit: India    Tahun Terbit: 2019     Jenis: Article - diterbitkan di jurnal ilmiah internasional Fulltext: 09 ijaerv14n15_17.pdf (793.64KB; 0 download) [Informasi yang berkaitan dengan koleksi ini di internet] Abstract Welding is one method of joining two or more materials by heating or merging the base material and electrode that act as adhesive or glue. Known welding defect have been found in pipe weld joint during work of pipeline construction so repair must be carried out and it causes loss of cost and time. This welding aims to join two pieces of seamless carbon steel pipe with beveled ends with outside diameter 60.3 mm and thickness 3.91 mm. Welding process is SMAW (shield Metal Arc Welding) by using two class type of welding wire that is welding wire A5.1 AWS E7016 for weld pass root and welding wire A5.1 AWS E7018 for weld pass fill and cap. The welding results were tested with NDT method using radiography test types of gamma-ray ir-192. Radiography test method used is film radiography. From the results of radiographic film interpretation which refer to acceptance criteria standart API 1104, found porosity weld defects in the weld pass fill. Based on the type of welding defect that occurs, analysis of several causes of defects was carried out and it was found the biggest cause occurrence of welding defects. This happens caused the preheat process on material and welding wire is not carried out so the cooling process in welding is too fast and uneven . Based on this, repair must be carried out by adding a preheat process to the welding wire by baking the welding wire up to 80°C for 2 hours using baking oven and transffered it to drying oven for temperature maintenance. After testing the welded joints that have been repaired, the test results shows the weld joint pass the acceptance criteria. This analysis aim to determine the causes of weld disabilities on carbon steel pipes with SMAW reviewed from radiography test result so that weld joint repairs can be done and avoid this from repeated. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Lihat Sejarah Pengadaan  Konversi Metadata   Kembali

Copyright © 2006, 2007 Unika Atma Jaya, all rights reserved